Document (#33007)

Author

Park, G.
Baek, Y.
Lee, H.-K.

Title

Re-ranking algorithm using post-retrieval clustering for content-based image retrieval

Source

Information processing and management. 41(2005) no.2, S.177-194

Year

2005

Abstract

In this paper, we propose a re-ranking algorithm using post-retrieval clustering for content-based image retrieval (CBIR). In conventional CBIR systems, it is often observed that images visually dissimilar to a query image are ranked high in retrieval results. To remedy this problem, we utilize the similarity relationship of the retrieved results via post-retrieval clustering. In the first step of our method, images are retrieved using visual features such as color histogram. Next, the retrieved images are analyzed using hierarchical agglomerative clustering methods (HACM) and the rank of the results is adjusted according to the distance of a cluster from a query. In addition, we analyze the effects of clustering methods, query-cluster similarity functions, and weighting factors in the proposed method. We conducted a number of experiments using several clustering methods and cluster parameters. Experimental results show that the proposed method achieves an improvement of retrieval effectiveness of over 10% on average in the average normalized modified retrieval rank (ANMRR) measure.

Form

Bilder

Similar documents (author)

1. Park, A.L.: ¬A comparison of a new OCLC/PRISM searches with earlier OCLC derived searches (1992) 4.66

   4.659264 = sum of:
     4.659264 = weight(author_txt:park in 4239) [ClassicSimilarity], result of:
       4.659264 = score(doc=4239,freq=1.0), product of:
         0.99999994 = queryWeight, product of:
           7.454823 = idf(docFreq=66, maxDocs=42596)
           0.13414134 = queryNorm
         4.6592646 = fieldWeight in 4239, product of:
           1.0 = tf(freq=1.0), with freq of:
             1.0 = termFreq=1.0
           7.454823 = idf(docFreq=66, maxDocs=42596)
           0.625 = fieldNorm(doc=4239)
   

2. Park, T.K.: ¬The nature of relevance in information retrieval : an empirical study (1993) 4.66

   4.659264 = sum of:
     4.659264 = weight(author_txt:park in 5336) [ClassicSimilarity], result of:
       4.659264 = score(doc=5336,freq=1.0), product of:
         0.99999994 = queryWeight, product of:
           7.454823 = idf(docFreq=66, maxDocs=42596)
           0.13414134 = queryNorm
         4.6592646 = fieldWeight in 5336, product of:
           1.0 = tf(freq=1.0), with freq of:
             1.0 = termFreq=1.0
           7.454823 = idf(docFreq=66, maxDocs=42596)
           0.625 = fieldNorm(doc=5336)
   

3. Park, T.K.: ¬The nature of relevance in information retrieval : an empirical study (1992) 4.66

   4.659264 = sum of:
     4.659264 = weight(author_txt:park in 5370) [ClassicSimilarity], result of:
       4.659264 = score(doc=5370,freq=1.0), product of:
         0.99999994 = queryWeight, product of:
           7.454823 = idf(docFreq=66, maxDocs=42596)
           0.13414134 = queryNorm
         4.6592646 = fieldWeight in 5370, product of:
           1.0 = tf(freq=1.0), with freq of:
             1.0 = termFreq=1.0
           7.454823 = idf(docFreq=66, maxDocs=42596)
           0.625 = fieldNorm(doc=5370)
   

4. Park, A.L.: Automated authority control : making the transition (1992) 4.66

   4.659264 = sum of:
     4.659264 = weight(author_txt:park in 5394) [ClassicSimilarity], result of:
       4.659264 = score(doc=5394,freq=1.0), product of:
         0.99999994 = queryWeight, product of:
           7.454823 = idf(docFreq=66, maxDocs=42596)
           0.13414134 = queryNorm
         4.6592646 = fieldWeight in 5394, product of:
           1.0 = tf(freq=1.0), with freq of:
             1.0 = termFreq=1.0
           7.454823 = idf(docFreq=66, maxDocs=42596)
           0.625 = fieldNorm(doc=5394)
   

5. Park, T.K.: Toward a theory of user-based relevance : a call for a new paradigm of inquiry (1994) 4.66

   4.659264 = sum of:
     4.659264 = weight(author_txt:park in 6926) [ClassicSimilarity], result of:
       4.659264 = score(doc=6926,freq=1.0), product of:
         0.99999994 = queryWeight, product of:
           7.454823 = idf(docFreq=66, maxDocs=42596)
           0.13414134 = queryNorm
         4.6592646 = fieldWeight in 6926, product of:
           1.0 = tf(freq=1.0), with freq of:
             1.0 = termFreq=1.0
           7.454823 = idf(docFreq=66, maxDocs=42596)
           0.625 = fieldNorm(doc=6926)
   

Similar documents (content)

1. Li, Y.; Xu, S.; Luo, X.; Lin, S.: ¬A new algorithm for product image search based on salient edge characterization (2014) 0.56

   0.5590599 = sum of:
     0.5590599 = product of:
       1.0751153 = sum of:
         0.019713521 = weight(abstract_txt:content in 2553) [ClassicSimilarity], result of:
           0.019713521 = score(doc=2553,freq=1.0), product of:
             0.07511656 = queryWeight, product of:
               1.0249299 = boost
               4.199025 = idf(docFreq=1737, maxDocs=42596)
               0.017453924 = queryNorm
             0.26243907 = fieldWeight in 2553, product of:
               1.0 = tf(freq=1.0), with freq of:
                 1.0 = termFreq=1.0
               4.199025 = idf(docFreq=1737, maxDocs=42596)
               0.0625 = fieldNorm(doc=2553)
         0.046184983 = weight(abstract_txt:proposed in 2553) [ClassicSimilarity], result of:
           0.046184983 = score(doc=2553,freq=3.0), product of:
             0.09187268 = queryWeight, product of:
               1.1334947 = boost
               4.643803 = idf(docFreq=1113, maxDocs=42596)
               0.017453924 = queryNorm
             0.5027064 = fieldWeight in 2553, product of:
               1.7320508 = tf(freq=3.0), with freq of:
                 3.0 = termFreq=3.0
               4.643803 = idf(docFreq=1113, maxDocs=42596)
               0.0625 = fieldNorm(doc=2553)
         0.12201978 = weight(abstract_txt:histogram in 2553) [ClassicSimilarity], result of:
           0.12201978 = score(doc=2553,freq=1.0), product of:
             0.20098783 = queryWeight, product of:
               1.1854854 = boost
               9.713606 = idf(docFreq=6, maxDocs=42596)
               0.017453924 = queryNorm
             0.60710037 = fieldWeight in 2553, product of:
               1.0 = tf(freq=1.0), with freq of:
                 1.0 = termFreq=1.0
               9.713606 = idf(docFreq=6, maxDocs=42596)
               0.0625 = fieldNorm(doc=2553)
         0.049883593 = weight(abstract_txt:algorithm in 2553) [ClassicSimilarity], result of:
           0.049883593 = score(doc=2553,freq=1.0), product of:
             0.13948625 = queryWeight, product of:
               1.3966643 = boost
               5.7219796 = idf(docFreq=378, maxDocs=42596)
               0.017453924 = queryNorm
             0.35762373 = fieldWeight in 2553, product of:
               1.0 = tf(freq=1.0), with freq of:
                 1.0 = termFreq=1.0
               5.7219796 = idf(docFreq=378, maxDocs=42596)
               0.0625 = fieldNorm(doc=2553)
         0.09059362 = weight(abstract_txt:similarity in 2553) [ClassicSimilarity], result of:
           0.09059362 = score(doc=2553,freq=3.0), product of:
             0.14396301 = queryWeight, product of:
               1.4188999 = boost
               5.813077 = idf(docFreq=345, maxDocs=42596)
               0.017453924 = queryNorm
             0.629284 = fieldWeight in 2553, product of:
               1.7320508 = tf(freq=3.0), with freq of:
                 3.0 = termFreq=3.0
               5.813077 = idf(docFreq=345, maxDocs=42596)
               0.0625 = fieldNorm(doc=2553)
         0.07073411 = weight(abstract_txt:rank in 2553) [ClassicSimilarity], result of:
           0.07073411 = score(doc=2553,freq=1.0), product of:
             0.17605385 = queryWeight, product of:
               1.5690944 = boost
               6.428407 = idf(docFreq=186, maxDocs=42596)
               0.017453924 = queryNorm
             0.40177545 = fieldWeight in 2553, product of:
               1.0 = tf(freq=1.0), with freq of:
                 1.0 = termFreq=1.0
               6.428407 = idf(docFreq=186, maxDocs=42596)
               0.0625 = fieldNorm(doc=2553)
         0.090574116 = weight(abstract_txt:method in 2553) [ClassicSimilarity], result of:
           0.090574116 = score(doc=2553,freq=6.0), product of:
             0.1307803 = queryWeight, product of:
               1.6563156 = boost
               4.5238285 = idf(docFreq=1255, maxDocs=42596)
               0.017453924 = queryNorm
             0.692567 = fieldWeight in 2553, product of:
               2.4494898 = tf(freq=6.0), with freq of:
                 6.0 = termFreq=6.0
               4.5238285 = idf(docFreq=1255, maxDocs=42596)
               0.0625 = fieldNorm(doc=2553)
         0.02297032 = weight(abstract_txt:results in 2553) [ClassicSimilarity], result of:
           0.02297032 = score(doc=2553,freq=1.0), product of:
             0.1047967 = queryWeight, product of:
               1.7120447 = boost
               3.5070295 = idf(docFreq=3471, maxDocs=42596)
               0.017453924 = queryNorm
             0.21918935 = fieldWeight in 2553, product of:
               1.0 = tf(freq=1.0), with freq of:
                 1.0 = termFreq=1.0
               3.5070295 = idf(docFreq=3471, maxDocs=42596)
               0.0625 = fieldNorm(doc=2553)
         0.19535953 = weight(abstract_txt:image in 2553) [ClassicSimilarity], result of:
           0.19535953 = score(doc=2553,freq=10.0), product of:
             0.18413927 = queryWeight, product of:
               1.9653738 = boost
               5.3679466 = idf(docFreq=539, maxDocs=42596)
               0.017453924 = queryNorm
             1.0609336 = fieldWeight in 2553, product of:
               3.1622777 = tf(freq=10.0), with freq of:
                 10.0 = termFreq=10.0
               5.3679466 = idf(docFreq=539, maxDocs=42596)
               0.0625 = fieldNorm(doc=2553)
         0.08960609 = weight(abstract_txt:images in 2553) [ClassicSimilarity], result of:
           0.08960609 = score(doc=2553,freq=2.0), product of:
             0.1872715 = queryWeight, product of:
               1.982019 = boost
               5.4134088 = idf(docFreq=515, maxDocs=42596)
               0.017453924 = queryNorm
             0.47848225 = fieldWeight in 2553, product of:
               1.4142135 = tf(freq=2.0), with freq of:
                 2.0 = termFreq=2.0
               5.4134088 = idf(docFreq=515, maxDocs=42596)
               0.0625 = fieldNorm(doc=2553)
         0.028048191 = weight(abstract_txt:using in 2553) [ClassicSimilarity], result of:
           0.028048191 = score(doc=2553,freq=1.0), product of:
             0.12896627 = queryWeight, product of:
               2.1234126 = boost
               3.4797552 = idf(docFreq=3567, maxDocs=42596)
               0.017453924 = queryNorm
             0.2174847 = fieldWeight in 2553, product of:
               1.0 = tf(freq=1.0), with freq of:
                 1.0 = termFreq=1.0
               3.4797552 = idf(docFreq=3567, maxDocs=42596)
               0.0625 = fieldNorm(doc=2553)
         0.18688461 = weight(abstract_txt:cbir in 2553) [ClassicSimilarity], result of:
           0.18688461 = score(doc=2553,freq=1.0), product of:
             0.33646658 = queryWeight, product of:
               2.1691885 = boost
               8.886927 = idf(docFreq=15, maxDocs=42596)
               0.017453924 = queryNorm
             0.5554329 = fieldWeight in 2553, product of:
               1.0 = tf(freq=1.0), with freq of:
                 1.0 = termFreq=1.0
               8.886927 = idf(docFreq=15, maxDocs=42596)
               0.0625 = fieldNorm(doc=2553)
         0.062542774 = weight(abstract_txt:retrieval in 2553) [ClassicSimilarity], result of:
           0.062542774 = score(doc=2553,freq=2.0), product of:
             0.20434046 = queryWeight, product of:
               3.380909 = boost
               3.4628031 = idf(docFreq=3628, maxDocs=42596)
               0.017453924 = queryNorm
             0.30607143 = fieldWeight in 2553, product of:
               1.4142135 = tf(freq=2.0), with freq of:
                 2.0 = termFreq=2.0
               3.4628031 = idf(docFreq=3628, maxDocs=42596)
               0.0625 = fieldNorm(doc=2553)
       0.52 = coord(13/25)
   

2. Shah, B.; Raghavan, V.; Dhatric, P.; Zhao, X.: ¬A cluster-based approach for efficient content-based image retrieval using a similarity-preserving space transformation method (2006) 0.54

   0.53644466 = sum of:
     0.53644466 = product of:
       1.117593 = sum of:
         0.01724933 = weight(abstract_txt:content in 298) [ClassicSimilarity], result of:
           0.01724933 = score(doc=298,freq=1.0), product of:
             0.07511656 = queryWeight, product of:
               1.0249299 = boost
               4.199025 = idf(docFreq=1737, maxDocs=42596)
               0.017453924 = queryNorm
             0.2296342 = fieldWeight in 298, product of:
               1.0 = tf(freq=1.0), with freq of:
                 1.0 = termFreq=1.0
               4.199025 = idf(docFreq=1737, maxDocs=42596)
               0.0546875 = fieldNorm(doc=298)
         0.04041186 = weight(abstract_txt:proposed in 298) [ClassicSimilarity], result of:
           0.04041186 = score(doc=298,freq=3.0), product of:
             0.09187268 = queryWeight, product of:
               1.1334947 = boost
               4.643803 = idf(docFreq=1113, maxDocs=42596)
               0.017453924 = queryNorm
             0.4398681 = fieldWeight in 298, product of:
               1.7320508 = tf(freq=3.0), with freq of:
                 3.0 = termFreq=3.0
               4.643803 = idf(docFreq=1113, maxDocs=42596)
               0.0546875 = fieldNorm(doc=298)
         0.045766223 = weight(abstract_txt:similarity in 298) [ClassicSimilarity], result of:
           0.045766223 = score(doc=298,freq=1.0), product of:
             0.14396301 = queryWeight, product of:
               1.4188999 = boost
               5.813077 = idf(docFreq=345, maxDocs=42596)
               0.017453924 = queryNorm
             0.31790265 = fieldWeight in 298, product of:
               1.0 = tf(freq=1.0), with freq of:
                 1.0 = termFreq=1.0
               5.813077 = idf(docFreq=345, maxDocs=42596)
               0.0546875 = fieldNorm(doc=298)
         0.045756362 = weight(abstract_txt:method in 298) [ClassicSimilarity], result of:
           0.045756362 = score(doc=298,freq=2.0), product of:
             0.1307803 = queryWeight, product of:
               1.6563156 = boost
               4.5238285 = idf(docFreq=1255, maxDocs=42596)
               0.017453924 = queryNorm
             0.349872 = fieldWeight in 298, product of:
               1.4142135 = tf(freq=2.0), with freq of:
                 2.0 = termFreq=2.0
               4.5238285 = idf(docFreq=1255, maxDocs=42596)
               0.0546875 = fieldNorm(doc=298)
         0.028424319 = weight(abstract_txt:results in 298) [ClassicSimilarity], result of:
           0.028424319 = score(doc=298,freq=2.0), product of:
             0.1047967 = queryWeight, product of:
               1.7120447 = boost
               3.5070295 = idf(docFreq=3471, maxDocs=42596)
               0.017453924 = queryNorm
             0.27123296 = fieldWeight in 298, product of:
               1.4142135 = tf(freq=2.0), with freq of:
                 2.0 = termFreq=2.0
               3.5070295 = idf(docFreq=3471, maxDocs=42596)
               0.0546875 = fieldNorm(doc=298)
         0.05243195 = weight(abstract_txt:query in 298) [ClassicSimilarity], result of:
           0.05243195 = score(doc=298,freq=2.0), product of:
             0.14320955 = queryWeight, product of:
               1.7332368 = boost
               4.7339206 = idf(docFreq=1017, maxDocs=42596)
               0.017453924 = queryNorm
             0.3661205 = fieldWeight in 298, product of:
               1.4142135 = tf(freq=2.0), with freq of:
                 2.0 = termFreq=2.0
               4.7339206 = idf(docFreq=1017, maxDocs=42596)
               0.0546875 = fieldNorm(doc=298)
         0.09362747 = weight(abstract_txt:image in 298) [ClassicSimilarity], result of:
           0.09362747 = score(doc=298,freq=3.0), product of:
             0.18413927 = queryWeight, product of:
               1.9653738 = boost
               5.3679466 = idf(docFreq=539, maxDocs=42596)
               0.017453924 = queryNorm
             0.5084601 = fieldWeight in 298, product of:
               1.7320508 = tf(freq=3.0), with freq of:
                 3.0 = termFreq=3.0
               5.3679466 = idf(docFreq=539, maxDocs=42596)
               0.0546875 = fieldNorm(doc=298)
         0.05544094 = weight(abstract_txt:images in 298) [ClassicSimilarity], result of:
           0.05544094 = score(doc=298,freq=1.0), product of:
             0.1872715 = queryWeight, product of:
               1.982019 = boost
               5.4134088 = idf(docFreq=515, maxDocs=42596)
               0.017453924 = queryNorm
             0.29604578 = fieldWeight in 298, product of:
               1.0 = tf(freq=1.0), with freq of:
                 1.0 = termFreq=1.0
               5.4134088 = idf(docFreq=515, maxDocs=42596)
               0.0546875 = fieldNorm(doc=298)
         0.024542166 = weight(abstract_txt:using in 298) [ClassicSimilarity], result of:
           0.024542166 = score(doc=298,freq=1.0), product of:
             0.12896627 = queryWeight, product of:
               2.1234126 = boost
               3.4797552 = idf(docFreq=3567, maxDocs=42596)
               0.017453924 = queryNorm
             0.19029911 = fieldWeight in 298, product of:
               1.0 = tf(freq=1.0), with freq of:
                 1.0 = termFreq=1.0
               3.4797552 = idf(docFreq=3567, maxDocs=42596)
               0.0546875 = fieldNorm(doc=298)
         0.28323194 = weight(abstract_txt:cbir in 298) [ClassicSimilarity], result of:
           0.28323194 = score(doc=298,freq=3.0), product of:
             0.33646658 = queryWeight, product of:
               2.1691885 = boost
               8.886927 = idf(docFreq=15, maxDocs=42596)
               0.017453924 = queryNorm
             0.8417833 = fieldWeight in 298, product of:
               1.7320508 = tf(freq=3.0), with freq of:
                 3.0 = termFreq=3.0
               8.886927 = idf(docFreq=15, maxDocs=42596)
               0.0546875 = fieldNorm(doc=298)
         0.09478637 = weight(abstract_txt:retrieval in 298) [ClassicSimilarity], result of:
           0.09478637 = score(doc=298,freq=6.0), product of:
             0.20434046 = queryWeight, product of:
               3.380909 = boost
               3.4628031 = idf(docFreq=3628, maxDocs=42596)
               0.017453924 = queryNorm
             0.46386492 = fieldWeight in 298, product of:
               2.4494898 = tf(freq=6.0), with freq of:
                 6.0 = termFreq=6.0
               3.4628031 = idf(docFreq=3628, maxDocs=42596)
               0.0546875 = fieldNorm(doc=298)
         0.3359241 = weight(abstract_txt:clustering in 298) [ClassicSimilarity], result of:
           0.3359241 = score(doc=298,freq=4.0), product of:
             0.4940096 = queryWeight, product of:
               4.552549 = boost
               6.2170978 = idf(docFreq=230, maxDocs=42596)
               0.017453924 = queryNorm
             0.67999506 = fieldWeight in 298, product of:
               2.0 = tf(freq=4.0), with freq of:
                 4.0 = termFreq=4.0
               6.2170978 = idf(docFreq=230, maxDocs=42596)
               0.0546875 = fieldNorm(doc=298)
       0.48 = coord(12/25)
   

3. Lu, W.; Ding, H.; Jiang, J.: ¬A document expansion framework for tag-based image retrieval (2018) 0.44

   0.44138703 = sum of:
     0.44138703 = product of:
       0.9195563 = sum of:
         0.046184983 = weight(abstract_txt:proposed in 228) [ClassicSimilarity], result of:
           0.046184983 = score(doc=228,freq=3.0), product of:
             0.09187268 = queryWeight, product of:
               1.1334947 = boost
               4.643803 = idf(docFreq=1113, maxDocs=42596)
               0.017453924 = queryNorm
             0.5027064 = fieldWeight in 228, product of:
               1.7320508 = tf(freq=3.0), with freq of:
                 3.0 = termFreq=3.0
               4.643803 = idf(docFreq=1113, maxDocs=42596)
               0.0625 = fieldNorm(doc=228)
         0.052304253 = weight(abstract_txt:similarity in 228) [ClassicSimilarity], result of:
           0.052304253 = score(doc=228,freq=1.0), product of:
             0.14396301 = queryWeight, product of:
               1.4188999 = boost
               5.813077 = idf(docFreq=345, maxDocs=42596)
               0.017453924 = queryNorm
             0.3633173 = fieldWeight in 228, product of:
               1.0 = tf(freq=1.0), with freq of:
                 1.0 = termFreq=1.0
               5.813077 = idf(docFreq=345, maxDocs=42596)
               0.0625 = fieldNorm(doc=228)
         0.029033523 = weight(abstract_txt:methods in 228) [ClassicSimilarity], result of:
           0.029033523 = score(doc=228,freq=1.0), product of:
             0.111307174 = queryWeight, product of:
               1.5280358 = boost
               4.173463 = idf(docFreq=1782, maxDocs=42596)
               0.017453924 = queryNorm
             0.26084143 = fieldWeight in 228, product of:
               1.0 = tf(freq=1.0), with freq of:
                 1.0 = termFreq=1.0
               4.173463 = idf(docFreq=1782, maxDocs=42596)
               0.0625 = fieldNorm(doc=228)
         0.12251508 = weight(abstract_txt:rank in 228) [ClassicSimilarity], result of:
           0.12251508 = score(doc=228,freq=3.0), product of:
             0.17605385 = queryWeight, product of:
               1.5690944 = boost
               6.428407 = idf(docFreq=186, maxDocs=42596)
               0.017453924 = queryNorm
             0.6958955 = fieldWeight in 228, product of:
               1.7320508 = tf(freq=3.0), with freq of:
                 3.0 = termFreq=3.0
               6.428407 = idf(docFreq=186, maxDocs=42596)
               0.0625 = fieldNorm(doc=228)
         0.06404557 = weight(abstract_txt:method in 228) [ClassicSimilarity], result of:
           0.06404557 = score(doc=228,freq=3.0), product of:
             0.1307803 = queryWeight, product of:
               1.6563156 = boost
               4.5238285 = idf(docFreq=1255, maxDocs=42596)
               0.017453924 = queryNorm
             0.4897188 = fieldWeight in 228, product of:
               1.7320508 = tf(freq=3.0), with freq of:
                 3.0 = termFreq=3.0
               4.5238285 = idf(docFreq=1255, maxDocs=42596)
               0.0625 = fieldNorm(doc=228)
         0.02297032 = weight(abstract_txt:results in 228) [ClassicSimilarity], result of:
           0.02297032 = score(doc=228,freq=1.0), product of:
             0.1047967 = queryWeight, product of:
               1.7120447 = boost
               3.5070295 = idf(docFreq=3471, maxDocs=42596)
               0.017453924 = queryNorm
             0.21918935 = fieldWeight in 228, product of:
               1.0 = tf(freq=1.0), with freq of:
                 1.0 = termFreq=1.0
               3.5070295 = idf(docFreq=3471, maxDocs=42596)
               0.0625 = fieldNorm(doc=228)
         0.042371415 = weight(abstract_txt:query in 228) [ClassicSimilarity], result of:
           0.042371415 = score(doc=228,freq=1.0), product of:
             0.14320955 = queryWeight, product of:
               1.7332368 = boost
               4.7339206 = idf(docFreq=1017, maxDocs=42596)
               0.017453924 = queryNorm
             0.29587004 = fieldWeight in 228, product of:
               1.0 = tf(freq=1.0), with freq of:
                 1.0 = termFreq=1.0
               4.7339206 = idf(docFreq=1017, maxDocs=42596)
               0.0625 = fieldNorm(doc=228)
         0.15132485 = weight(abstract_txt:image in 228) [ClassicSimilarity], result of:
           0.15132485 = score(doc=228,freq=6.0), product of:
             0.18413927 = queryWeight, product of:
               1.9653738 = boost
               5.3679466 = idf(docFreq=539, maxDocs=42596)
               0.017453924 = queryNorm
             0.82179564 = fieldWeight in 228, product of:
               2.4494898 = tf(freq=6.0), with freq of:
                 6.0 = termFreq=6.0
               5.3679466 = idf(docFreq=539, maxDocs=42596)
               0.0625 = fieldNorm(doc=228)
         0.12672216 = weight(abstract_txt:images in 228) [ClassicSimilarity], result of:
           0.12672216 = score(doc=228,freq=4.0), product of:
             0.1872715 = queryWeight, product of:
               1.982019 = boost
               5.4134088 = idf(docFreq=515, maxDocs=42596)
               0.017453924 = queryNorm
             0.6766761 = fieldWeight in 228, product of:
               2.0 = tf(freq=4.0), with freq of:
                 4.0 = termFreq=4.0
               5.4134088 = idf(docFreq=515, maxDocs=42596)
               0.0625 = fieldNorm(doc=228)
         0.03966613 = weight(abstract_txt:using in 228) [ClassicSimilarity], result of:
           0.03966613 = score(doc=228,freq=2.0), product of:
             0.12896627 = queryWeight, product of:
               2.1234126 = boost
               3.4797552 = idf(docFreq=3567, maxDocs=42596)
               0.017453924 = queryNorm
             0.3075698 = fieldWeight in 228, product of:
               1.4142135 = tf(freq=2.0), with freq of:
                 2.0 = termFreq=2.0
               3.4797552 = idf(docFreq=3567, maxDocs=42596)
               0.0625 = fieldNorm(doc=228)
         0.15987521 = weight(abstract_txt:cluster in 228) [ClassicSimilarity], result of:
           0.15987521 = score(doc=228,freq=2.0), product of:
             0.27548677 = queryWeight, product of:
               2.4039328 = boost
               6.5657654 = idf(docFreq=162, maxDocs=42596)
               0.017453924 = queryNorm
             0.58033717 = fieldWeight in 228, product of:
               1.4142135 = tf(freq=2.0), with freq of:
                 2.0 = termFreq=2.0
               6.5657654 = idf(docFreq=162, maxDocs=42596)
               0.0625 = fieldNorm(doc=228)
         0.062542774 = weight(abstract_txt:retrieval in 228) [ClassicSimilarity], result of:
           0.062542774 = score(doc=228,freq=2.0), product of:
             0.20434046 = queryWeight, product of:
               3.380909 = boost
               3.4628031 = idf(docFreq=3628, maxDocs=42596)
               0.017453924 = queryNorm
             0.30607143 = fieldWeight in 228, product of:
               1.4142135 = tf(freq=2.0), with freq of:
                 2.0 = termFreq=2.0
               3.4628031 = idf(docFreq=3628, maxDocs=42596)
               0.0625 = fieldNorm(doc=228)
       0.48 = coord(12/25)
   

4. Cathey, R.J.; Jensen, E.C.; Beitzel, S.M.; Frieder, O.; Grossman, D.: Exploiting parallelism to support scalable hierarchical clustering (2007) 0.38

   0.37902525 = sum of:
     0.37902525 = product of:
       1.0528479 = sum of:
         0.026664915 = weight(abstract_txt:proposed in 1628) [ClassicSimilarity], result of:
           0.026664915 = score(doc=1628,freq=1.0), product of:
             0.09187268 = queryWeight, product of:
               1.1334947 = boost
               4.643803 = idf(docFreq=1113, maxDocs=42596)
               0.017453924 = queryNorm
             0.2902377 = fieldWeight in 1628, product of:
               1.0 = tf(freq=1.0), with freq of:
                 1.0 = termFreq=1.0
               4.643803 = idf(docFreq=1113, maxDocs=42596)
               0.0625 = fieldNorm(doc=1628)
         0.15951174 = weight(abstract_txt:agglomerative in 1628) [ClassicSimilarity], result of:
           0.15951174 = score(doc=1628,freq=2.0), product of:
             0.19072226 = queryWeight, product of:
               1.1548139 = boost
               9.462291 = idf(docFreq=8, maxDocs=42596)
               0.017453924 = queryNorm
             0.8363562 = fieldWeight in 1628, product of:
               1.4142135 = tf(freq=2.0), with freq of:
                 2.0 = termFreq=2.0
               9.462291 = idf(docFreq=8, maxDocs=42596)
               0.0625 = fieldNorm(doc=1628)
         0.11154311 = weight(abstract_txt:algorithm in 1628) [ClassicSimilarity], result of:
           0.11154311 = score(doc=1628,freq=5.0), product of:
             0.13948625 = queryWeight, product of:
               1.3966643 = boost
               5.7219796 = idf(docFreq=378, maxDocs=42596)
               0.017453924 = queryNorm
             0.799671 = fieldWeight in 1628, product of:
               2.236068 = tf(freq=5.0), with freq of:
                 5.0 = termFreq=5.0
               5.7219796 = idf(docFreq=378, maxDocs=42596)
               0.0625 = fieldNorm(doc=1628)
         0.05550786 = weight(abstract_txt:average in 1628) [ClassicSimilarity], result of:
           0.05550786 = score(doc=1628,freq=1.0), product of:
             0.14978302 = queryWeight, product of:
               1.4472967 = boost
               5.9294157 = idf(docFreq=307, maxDocs=42596)
               0.017453924 = queryNorm
             0.37058848 = fieldWeight in 1628, product of:
               1.0 = tf(freq=1.0), with freq of:
                 1.0 = termFreq=1.0
               5.9294157 = idf(docFreq=307, maxDocs=42596)
               0.0625 = fieldNorm(doc=1628)
         0.032484937 = weight(abstract_txt:results in 1628) [ClassicSimilarity], result of:
           0.032484937 = score(doc=1628,freq=2.0), product of:
             0.1047967 = queryWeight, product of:
               1.7120447 = boost
               3.5070295 = idf(docFreq=3471, maxDocs=42596)
               0.017453924 = queryNorm
             0.30998054 = fieldWeight in 1628, product of:
               1.4142135 = tf(freq=2.0), with freq of:
                 2.0 = termFreq=2.0
               3.5070295 = idf(docFreq=3471, maxDocs=42596)
               0.0625 = fieldNorm(doc=1628)
         0.03966613 = weight(abstract_txt:using in 1628) [ClassicSimilarity], result of:
           0.03966613 = score(doc=1628,freq=2.0), product of:
             0.12896627 = queryWeight, product of:
               2.1234126 = boost
               3.4797552 = idf(docFreq=3567, maxDocs=42596)
               0.017453924 = queryNorm
             0.3075698 = fieldWeight in 1628, product of:
               1.4142135 = tf(freq=2.0), with freq of:
                 2.0 = termFreq=2.0
               3.4797552 = idf(docFreq=3567, maxDocs=42596)
               0.0625 = fieldNorm(doc=1628)
         0.113048844 = weight(abstract_txt:cluster in 1628) [ClassicSimilarity], result of:
           0.113048844 = score(doc=1628,freq=1.0), product of:
             0.27548677 = queryWeight, product of:
               2.4039328 = boost
               6.5657654 = idf(docFreq=162, maxDocs=42596)
               0.017453924 = queryNorm
             0.41036034 = fieldWeight in 1628, product of:
               1.0 = tf(freq=1.0), with freq of:
                 1.0 = termFreq=1.0
               6.5657654 = idf(docFreq=162, maxDocs=42596)
               0.0625 = fieldNorm(doc=1628)
         0.044224422 = weight(abstract_txt:retrieval in 1628) [ClassicSimilarity], result of:
           0.044224422 = score(doc=1628,freq=1.0), product of:
             0.20434046 = queryWeight, product of:
               3.380909 = boost
               3.4628031 = idf(docFreq=3628, maxDocs=42596)
               0.017453924 = queryNorm
             0.2164252 = fieldWeight in 1628, product of:
               1.0 = tf(freq=1.0), with freq of:
                 1.0 = termFreq=1.0
               3.4628031 = idf(docFreq=3628, maxDocs=42596)
               0.0625 = fieldNorm(doc=1628)
         0.4701958 = weight(abstract_txt:clustering in 1628) [ClassicSimilarity], result of:
           0.4701958 = score(doc=1628,freq=6.0), product of:
             0.4940096 = queryWeight, product of:
               4.552549 = boost
               6.2170978 = idf(docFreq=230, maxDocs=42596)
               0.017453924 = queryNorm
             0.95179486 = fieldWeight in 1628, product of:
               2.4494898 = tf(freq=6.0), with freq of:
                 6.0 = termFreq=6.0
               6.2170978 = idf(docFreq=230, maxDocs=42596)
               0.0625 = fieldNorm(doc=1628)
       0.36 = coord(9/25)
   

5. Falchi, F.; Lucchese, C.; Orlando, S.; Perego, R.; Rabitti, F.: Similarity caching in large-scale image retrieval (2012) 0.37

   0.3691265 = sum of:
     0.3691265 = product of:
       0.8389239 = sum of:
         0.029876715 = weight(abstract_txt:content in 3730) [ClassicSimilarity], result of:
           0.029876715 = score(doc=3730,freq=3.0), product of:
             0.07511656 = queryWeight, product of:
               1.0249299 = boost
               4.199025 = idf(docFreq=1737, maxDocs=42596)
               0.017453924 = queryNorm
             0.39773807 = fieldWeight in 3730, product of:
               1.7320508 = tf(freq=3.0), with freq of:
                 3.0 = termFreq=3.0
               4.199025 = idf(docFreq=1737, maxDocs=42596)
               0.0546875 = fieldNorm(doc=3730)
         0.032996148 = weight(abstract_txt:proposed in 3730) [ClassicSimilarity], result of:
           0.032996148 = score(doc=3730,freq=2.0), product of:
             0.09187268 = queryWeight, product of:
               1.1334947 = boost
               4.643803 = idf(docFreq=1113, maxDocs=42596)
               0.017453924 = queryNorm
             0.35915083 = fieldWeight in 3730, product of:
               1.4142135 = tf(freq=2.0), with freq of:
                 2.0 = termFreq=2.0
               4.643803 = idf(docFreq=1113, maxDocs=42596)
               0.0546875 = fieldNorm(doc=3730)
         0.112103894 = weight(abstract_txt:similarity in 3730) [ClassicSimilarity], result of:
           0.112103894 = score(doc=3730,freq=6.0), product of:
             0.14396301 = queryWeight, product of:
               1.4188999 = boost
               5.813077 = idf(docFreq=345, maxDocs=42596)
               0.017453924 = queryNorm
             0.7786993 = fieldWeight in 3730, product of:
               2.4494898 = tf(freq=6.0), with freq of:
                 6.0 = termFreq=6.0
               5.813077 = idf(docFreq=345, maxDocs=42596)
               0.0546875 = fieldNorm(doc=3730)
         0.048569378 = weight(abstract_txt:average in 3730) [ClassicSimilarity], result of:
           0.048569378 = score(doc=3730,freq=1.0), product of:
             0.14978302 = queryWeight, product of:
               1.4472967 = boost
               5.9294157 = idf(docFreq=307, maxDocs=42596)
               0.017453924 = queryNorm
             0.3242649 = fieldWeight in 3730, product of:
               1.0 = tf(freq=1.0), with freq of:
                 1.0 = termFreq=1.0
               5.9294157 = idf(docFreq=307, maxDocs=42596)
               0.0546875 = fieldNorm(doc=3730)
         0.040198058 = weight(abstract_txt:results in 3730) [ClassicSimilarity], result of:
           0.040198058 = score(doc=3730,freq=4.0), product of:
             0.1047967 = queryWeight, product of:
               1.7120447 = boost
               3.5070295 = idf(docFreq=3471, maxDocs=42596)
               0.017453924 = queryNorm
             0.38358134 = fieldWeight in 3730, product of:
               2.0 = tf(freq=4.0), with freq of:
                 4.0 = termFreq=4.0
               3.5070295 = idf(docFreq=3471, maxDocs=42596)
               0.0546875 = fieldNorm(doc=3730)
         0.05243195 = weight(abstract_txt:query in 3730) [ClassicSimilarity], result of:
           0.05243195 = score(doc=3730,freq=2.0), product of:
             0.14320955 = queryWeight, product of:
               1.7332368 = boost
               4.7339206 = idf(docFreq=1017, maxDocs=42596)
               0.017453924 = queryNorm
             0.3661205 = fieldWeight in 3730, product of:
               1.4142135 = tf(freq=2.0), with freq of:
                 2.0 = termFreq=2.0
               4.7339206 = idf(docFreq=1017, maxDocs=42596)
               0.0546875 = fieldNorm(doc=3730)
         0.054055847 = weight(abstract_txt:image in 3730) [ClassicSimilarity], result of:
           0.054055847 = score(doc=3730,freq=1.0), product of:
             0.18413927 = queryWeight, product of:
               1.9653738 = boost
               5.3679466 = idf(docFreq=539, maxDocs=42596)
               0.017453924 = queryNorm
             0.29355958 = fieldWeight in 3730, product of:
               1.0 = tf(freq=1.0), with freq of:
                 1.0 = termFreq=1.0
               5.3679466 = idf(docFreq=539, maxDocs=42596)
               0.0546875 = fieldNorm(doc=3730)
         0.07840533 = weight(abstract_txt:images in 3730) [ClassicSimilarity], result of:
           0.07840533 = score(doc=3730,freq=2.0), product of:
             0.1872715 = queryWeight, product of:
               1.982019 = boost
               5.4134088 = idf(docFreq=515, maxDocs=42596)
               0.017453924 = queryNorm
             0.41867197 = fieldWeight in 3730, product of:
               1.4142135 = tf(freq=2.0), with freq of:
                 2.0 = termFreq=2.0
               5.4134088 = idf(docFreq=515, maxDocs=42596)
               0.0546875 = fieldNorm(doc=3730)
         0.024542166 = weight(abstract_txt:using in 3730) [ClassicSimilarity], result of:
           0.024542166 = score(doc=3730,freq=1.0), product of:
             0.12896627 = queryWeight, product of:
               2.1234126 = boost
               3.4797552 = idf(docFreq=3567, maxDocs=42596)
               0.017453924 = queryNorm
             0.19029911 = fieldWeight in 3730, product of:
               1.0 = tf(freq=1.0), with freq of:
                 1.0 = termFreq=1.0
               3.4797552 = idf(docFreq=3567, maxDocs=42596)
               0.0546875 = fieldNorm(doc=3730)
         0.3270481 = weight(abstract_txt:cbir in 3730) [ClassicSimilarity], result of:
           0.3270481 = score(doc=3730,freq=4.0), product of:
             0.33646658 = queryWeight, product of:
               2.1691885 = boost
               8.886927 = idf(docFreq=15, maxDocs=42596)
               0.017453924 = queryNorm
             0.97200763 = fieldWeight in 3730, product of:
               2.0 = tf(freq=4.0), with freq of:
                 4.0 = termFreq=4.0
               8.886927 = idf(docFreq=15, maxDocs=42596)
               0.0546875 = fieldNorm(doc=3730)
         0.03869637 = weight(abstract_txt:retrieval in 3730) [ClassicSimilarity], result of:
           0.03869637 = score(doc=3730,freq=1.0), product of:
             0.20434046 = queryWeight, product of:
               3.380909 = boost
               3.4628031 = idf(docFreq=3628, maxDocs=42596)
               0.017453924 = queryNorm
             0.18937205 = fieldWeight in 3730, product of:
               1.0 = tf(freq=1.0), with freq of:
                 1.0 = termFreq=1.0
               3.4628031 = idf(docFreq=3628, maxDocs=42596)
               0.0546875 = fieldNorm(doc=3730)
       0.44 = coord(11/25)