Search (42 results, page 2 of 3)

Habernal, I.; Konopík, M.; Rohlík, O.: Question answering (2012) 0.01

0.010712966 = product of:
  0.021425933 = sum of:
    0.021425933 = product of:
      0.042851865 = sum of:
        0.042851865 = weight(_text_:i in 101) [ClassicSimilarity], result of:
          0.042851865 = score(doc=101,freq=2.0), product of:
            0.17138503 = queryWeight, product of:
              3.7717297 = idf(docFreq=2765, maxDocs=44218)
              0.045439374 = queryNorm
            0.25003272 = fieldWeight in 101, product of:
              1.4142135 = tf(freq=2.0), with freq of:
                2.0 = termFreq=2.0
              3.7717297 = idf(docFreq=2765, maxDocs=44218)
              0.046875 = fieldNorm(doc=101)
      0.5 = coord(1/2)
  0.5 = coord(1/2)

Joss, M.W.; Wszola, S.: ¬The engines that can : text search and retrieval software, their strategies, and vendors (1996) 0.01

0.009234612 = product of:
  0.018469224 = sum of:
    0.018469224 = product of:
      0.036938448 = sum of:
        0.036938448 = weight(_text_:22 in 5123) [ClassicSimilarity], result of:
          0.036938448 = score(doc=5123,freq=2.0), product of:
            0.15912095 = queryWeight, product of:
              3.5018296 = idf(docFreq=3622, maxDocs=44218)
              0.045439374 = queryNorm
            0.23214069 = fieldWeight in 5123, product of:
              1.4142135 = tf(freq=2.0), with freq of:
                2.0 = termFreq=2.0
              3.5018296 = idf(docFreq=3622, maxDocs=44218)
              0.046875 = fieldNorm(doc=5123)
      0.5 = coord(1/2)
  0.5 = coord(1/2)

Date: 12. 9.1996 13:56:22

Kelledy, F.; Smeaton, A.F.: Signature files and beyond (1996) 0.01

0.009234612 = product of:
  0.018469224 = sum of:
    0.018469224 = product of:
      0.036938448 = sum of:
        0.036938448 = weight(_text_:22 in 6973) [ClassicSimilarity], result of:
          0.036938448 = score(doc=6973,freq=2.0), product of:
            0.15912095 = queryWeight, product of:
              3.5018296 = idf(docFreq=3622, maxDocs=44218)
              0.045439374 = queryNorm
            0.23214069 = fieldWeight in 6973, product of:
              1.4142135 = tf(freq=2.0), with freq of:
                2.0 = termFreq=2.0
              3.5018296 = idf(docFreq=3622, maxDocs=44218)
              0.046875 = fieldNorm(doc=6973)
      0.5 = coord(1/2)
  0.5 = coord(1/2)

Source: Information retrieval: new systems and current research. Proceedings of the 16th Research Colloquium of the British Computer Society Information Retrieval Specialist Group, Drymen, Scotland, 22-23 Mar 94. Ed.: R. Leon

Crestani, F.; Dominich, S.; Lalmas, M.; Rijsbergen, C.J.K. van: Mathematical, logical, and formal methods in information retrieval : an introduction to the special issue (2003) 0.01

0.009234612 = product of:
  0.018469224 = sum of:
    0.018469224 = product of:
      0.036938448 = sum of:
        0.036938448 = weight(_text_:22 in 1451) [ClassicSimilarity], result of:
          0.036938448 = score(doc=1451,freq=2.0), product of:
            0.15912095 = queryWeight, product of:
              3.5018296 = idf(docFreq=3622, maxDocs=44218)
              0.045439374 = queryNorm
            0.23214069 = fieldWeight in 1451, product of:
              1.4142135 = tf(freq=2.0), with freq of:
                2.0 = termFreq=2.0
              3.5018296 = idf(docFreq=3622, maxDocs=44218)
              0.046875 = fieldNorm(doc=1451)
      0.5 = coord(1/2)
  0.5 = coord(1/2)

Date: 22. 3.2003 19:27:36

Fan, W.; Fox, E.A.; Pathak, P.; Wu, H.: ¬The effects of fitness functions an genetic programming-based ranking discovery for Web search (2004) 0.01

0.009234612 = product of:
  0.018469224 = sum of:
    0.018469224 = product of:
      0.036938448 = sum of:
        0.036938448 = weight(_text_:22 in 2239) [ClassicSimilarity], result of:
          0.036938448 = score(doc=2239,freq=2.0), product of:
            0.15912095 = queryWeight, product of:
              3.5018296 = idf(docFreq=3622, maxDocs=44218)
              0.045439374 = queryNorm
            0.23214069 = fieldWeight in 2239, product of:
              1.4142135 = tf(freq=2.0), with freq of:
                2.0 = termFreq=2.0
              3.5018296 = idf(docFreq=3622, maxDocs=44218)
              0.046875 = fieldNorm(doc=2239)
      0.5 = coord(1/2)
  0.5 = coord(1/2)

Date: 31. 5.2004 19:22:06

Furner, J.: ¬A unifying model of document relatedness for hybrid search engines (2003) 0.01

0.009234612 = product of:
  0.018469224 = sum of:
    0.018469224 = product of:
      0.036938448 = sum of:
        0.036938448 = weight(_text_:22 in 2717) [ClassicSimilarity], result of:
          0.036938448 = score(doc=2717,freq=2.0), product of:
            0.15912095 = queryWeight, product of:
              3.5018296 = idf(docFreq=3622, maxDocs=44218)
              0.045439374 = queryNorm
            0.23214069 = fieldWeight in 2717, product of:
              1.4142135 = tf(freq=2.0), with freq of:
                2.0 = termFreq=2.0
              3.5018296 = idf(docFreq=3622, maxDocs=44218)
              0.046875 = fieldNorm(doc=2717)
      0.5 = coord(1/2)
  0.5 = coord(1/2)

Date: 11. 9.2004 17:32:22

Witschel, H.F.: Global term weights in distributed environments (2008) 0.01

0.009234612 = product of:
  0.018469224 = sum of:
    0.018469224 = product of:
      0.036938448 = sum of:
        0.036938448 = weight(_text_:22 in 2096) [ClassicSimilarity], result of:
          0.036938448 = score(doc=2096,freq=2.0), product of:
            0.15912095 = queryWeight, product of:
              3.5018296 = idf(docFreq=3622, maxDocs=44218)
              0.045439374 = queryNorm
            0.23214069 = fieldWeight in 2096, product of:
              1.4142135 = tf(freq=2.0), with freq of:
                2.0 = termFreq=2.0
              3.5018296 = idf(docFreq=3622, maxDocs=44218)
              0.046875 = fieldNorm(doc=2096)
      0.5 = coord(1/2)
  0.5 = coord(1/2)

Date: 1. 8.2008 9:44:22

Klas, C.-P.; Fuhr, N.; Schaefer, A.: Evaluating strategic support for information access in the DAFFODIL system (2004) 0.01

0.009234612 = product of:
  0.018469224 = sum of:
    0.018469224 = product of:
      0.036938448 = sum of:
        0.036938448 = weight(_text_:22 in 2419) [ClassicSimilarity], result of:
          0.036938448 = score(doc=2419,freq=2.0), product of:
            0.15912095 = queryWeight, product of:
              3.5018296 = idf(docFreq=3622, maxDocs=44218)
              0.045439374 = queryNorm
            0.23214069 = fieldWeight in 2419, product of:
              1.4142135 = tf(freq=2.0), with freq of:
                2.0 = termFreq=2.0
              3.5018296 = idf(docFreq=3622, maxDocs=44218)
              0.046875 = fieldNorm(doc=2419)
      0.5 = coord(1/2)
  0.5 = coord(1/2)

Date: 16.11.2008 16:22:48

Campos, L.M. de; Fernández-Luna, J.M.; Huete, J.F.: Implementing relevance feedback in the Bayesian network retrieval model (2003) 0.01

0.009234612 = product of:
  0.018469224 = sum of:
    0.018469224 = product of:
      0.036938448 = sum of:
        0.036938448 = weight(_text_:22 in 825) [ClassicSimilarity], result of:
          0.036938448 = score(doc=825,freq=2.0), product of:
            0.15912095 = queryWeight, product of:
              3.5018296 = idf(docFreq=3622, maxDocs=44218)
              0.045439374 = queryNorm
            0.23214069 = fieldWeight in 825, product of:
              1.4142135 = tf(freq=2.0), with freq of:
                2.0 = termFreq=2.0
              3.5018296 = idf(docFreq=3622, maxDocs=44218)
              0.046875 = fieldNorm(doc=825)
      0.5 = coord(1/2)
  0.5 = coord(1/2)

Date: 22. 3.2003 19:30:19

Kang, I.-H.; Kim, G.C.: Integration of multiple evidences based on a query type for web search (2004) 0.01

0.008927471 = product of:
  0.017854942 = sum of:
    0.017854942 = product of:
      0.035709884 = sum of:
        0.035709884 = weight(_text_:i in 2568) [ClassicSimilarity], result of:
          0.035709884 = score(doc=2568,freq=2.0), product of:
            0.17138503 = queryWeight, product of:
              3.7717297 = idf(docFreq=2765, maxDocs=44218)
              0.045439374 = queryNorm
            0.20836058 = fieldWeight in 2568, product of:
              1.4142135 = tf(freq=2.0), with freq of:
                2.0 = termFreq=2.0
              3.7717297 = idf(docFreq=2765, maxDocs=44218)
              0.0390625 = fieldNorm(doc=2568)
      0.5 = coord(1/2)
  0.5 = coord(1/2)

Fuhr, N.: Theorie des Information Retrieval I : Modelle (2004) 0.01

0.008927471 = product of:
  0.017854942 = sum of:
    0.017854942 = product of:
      0.035709884 = sum of:
        0.035709884 = weight(_text_:i in 2912) [ClassicSimilarity], result of:
          0.035709884 = score(doc=2912,freq=2.0), product of:
            0.17138503 = queryWeight, product of:
              3.7717297 = idf(docFreq=2765, maxDocs=44218)
              0.045439374 = queryNorm
            0.20836058 = fieldWeight in 2912, product of:
              1.4142135 = tf(freq=2.0), with freq of:
                2.0 = termFreq=2.0
              3.7717297 = idf(docFreq=2765, maxDocs=44218)
              0.0390625 = fieldNorm(doc=2912)
      0.5 = coord(1/2)
  0.5 = coord(1/2)

White, R.W.; Jose, J.M.; Ruthven, I.: Using top-ranking sentences to facilitate effective information access (2005) 0.01

0.008927471 = product of:
  0.017854942 = sum of:
    0.017854942 = product of:
      0.035709884 = sum of:
        0.035709884 = weight(_text_:i in 3881) [ClassicSimilarity], result of:
          0.035709884 = score(doc=3881,freq=2.0), product of:
            0.17138503 = queryWeight, product of:
              3.7717297 = idf(docFreq=2765, maxDocs=44218)
              0.045439374 = queryNorm
            0.20836058 = fieldWeight in 3881, product of:
              1.4142135 = tf(freq=2.0), with freq of:
                2.0 = termFreq=2.0
              3.7717297 = idf(docFreq=2765, maxDocs=44218)
              0.0390625 = fieldNorm(doc=3881)
      0.5 = coord(1/2)
  0.5 = coord(1/2)

Cheng, C.-S.; Chung, C.-P.; Shann, J.J.-J.: Fast query evaluation through document identifier assignment for inverted file-based information retrieval systems (2006) 0.01
```
0.008927471 = product of:
  0.017854942 = sum of:
    0.017854942 = product of:
      0.035709884 = sum of:
        0.035709884 = weight(_text_:i in 979) [ClassicSimilarity], result of:
          0.035709884 = score(doc=979,freq=2.0), product of:
            0.17138503 = queryWeight, product of:
              3.7717297 = idf(docFreq=2765, maxDocs=44218)
              0.045439374 = queryNorm
            0.20836058 = fieldWeight in 979, product of:
              1.4142135 = tf(freq=2.0), with freq of:
                2.0 = termFreq=2.0
              3.7717297 = idf(docFreq=2765, maxDocs=44218)
              0.0390625 = fieldNorm(doc=979)
      0.5 = coord(1/2)
  0.5 = coord(1/2)
```
Abstract

Compressing an inverted file can greatly improve query performance of an information retrieval system (IRS) by reducing disk I/Os. We observe that a good document identifier assignment (DIA) can make the document identifiers in the posting lists more clustered, and result in better compression as well as shorter query processing time. In this paper, we tackle the NP-complete problem of finding an optimal DIA to minimize the average query processing time in an IRS when the probability distribution of query terms is given. We indicate that the greedy nearest neighbor (Greedy-NN) algorithm can provide excellent performance for this problem. However, the Greedy-NN algorithm is inappropriate if used in large-scale IRSs, due to its high complexity O(N2 × n), where N denotes the number of documents and n denotes the number of distinct terms. In real-world IRSs, the distribution of query terms is skewed. Based on this fact, we propose a fast O(N × n) heuristic, called partition-based document identifier assignment (PBDIA) algorithm, which can efficiently assign consecutive document identifiers to those documents containing frequently used query terms, and improve compression efficiency of the posting lists for those terms. This can result in reduced query processing time. The experimental results show that the PBDIA algorithm can yield a competitive performance versus the Greedy-NN for the DIA problem, and that this optimization problem has significant advantages for both long queries and parallel information retrieval (IR).

Symonds, M.; Bruza, P.; Zuccon, G.; Koopman, B.; Sitbon, L.; Turner, I.: Automatic query expansion : a structural linguistic perspective (2014) 0.01

0.008927471 = product of:
  0.017854942 = sum of:
    0.017854942 = product of:
      0.035709884 = sum of:
        0.035709884 = weight(_text_:i in 1338) [ClassicSimilarity], result of:
          0.035709884 = score(doc=1338,freq=2.0), product of:
            0.17138503 = queryWeight, product of:
              3.7717297 = idf(docFreq=2765, maxDocs=44218)
              0.045439374 = queryNorm
            0.20836058 = fieldWeight in 1338, product of:
              1.4142135 = tf(freq=2.0), with freq of:
                2.0 = termFreq=2.0
              3.7717297 = idf(docFreq=2765, maxDocs=44218)
              0.0390625 = fieldNorm(doc=1338)
      0.5 = coord(1/2)
  0.5 = coord(1/2)

Burgin, R.: ¬The retrieval effectiveness of 5 clustering algorithms as a function of indexing exhaustivity (1995) 0.01

0.00769551 = product of:
  0.01539102 = sum of:
    0.01539102 = product of:
      0.03078204 = sum of:
        0.03078204 = weight(_text_:22 in 3365) [ClassicSimilarity], result of:
          0.03078204 = score(doc=3365,freq=2.0), product of:
            0.15912095 = queryWeight, product of:
              3.5018296 = idf(docFreq=3622, maxDocs=44218)
              0.045439374 = queryNorm
            0.19345059 = fieldWeight in 3365, product of:
              1.4142135 = tf(freq=2.0), with freq of:
                2.0 = termFreq=2.0
              3.5018296 = idf(docFreq=3622, maxDocs=44218)
              0.0390625 = fieldNorm(doc=3365)
      0.5 = coord(1/2)
  0.5 = coord(1/2)

Date: 22. 2.1996 11:20:06

Efthimiadis, E.N.: User choices : a new yardstick for the evaluation of ranking algorithms for interactive query expansion (1995) 0.01

0.00769551 = product of:
  0.01539102 = sum of:
    0.01539102 = product of:
      0.03078204 = sum of:
        0.03078204 = weight(_text_:22 in 5697) [ClassicSimilarity], result of:
          0.03078204 = score(doc=5697,freq=2.0), product of:
            0.15912095 = queryWeight, product of:
              3.5018296 = idf(docFreq=3622, maxDocs=44218)
              0.045439374 = queryNorm
            0.19345059 = fieldWeight in 5697, product of:
              1.4142135 = tf(freq=2.0), with freq of:
                2.0 = termFreq=2.0
              3.5018296 = idf(docFreq=3622, maxDocs=44218)
              0.0390625 = fieldNorm(doc=5697)
      0.5 = coord(1/2)
  0.5 = coord(1/2)

Date: 22. 2.1996 13:14:10

Song, D.; Bruza, P.D.: Towards context sensitive information inference (2003) 0.01

0.00769551 = product of:
  0.01539102 = sum of:
    0.01539102 = product of:
      0.03078204 = sum of:
        0.03078204 = weight(_text_:22 in 1428) [ClassicSimilarity], result of:
          0.03078204 = score(doc=1428,freq=2.0), product of:
            0.15912095 = queryWeight, product of:
              3.5018296 = idf(docFreq=3622, maxDocs=44218)
              0.045439374 = queryNorm
            0.19345059 = fieldWeight in 1428, product of:
              1.4142135 = tf(freq=2.0), with freq of:
                2.0 = termFreq=2.0
              3.5018296 = idf(docFreq=3622, maxDocs=44218)
              0.0390625 = fieldNorm(doc=1428)
      0.5 = coord(1/2)
  0.5 = coord(1/2)

Date: 22. 3.2003 19:35:46

Shiri, A.A.; Revie, C.: Query expansion behavior within a thesaurus-enhanced search environment : a user-centered evaluation (2006) 0.01

0.00769551 = product of:
  0.01539102 = sum of:
    0.01539102 = product of:
      0.03078204 = sum of:
        0.03078204 = weight(_text_:22 in 56) [ClassicSimilarity], result of:
          0.03078204 = score(doc=56,freq=2.0), product of:
            0.15912095 = queryWeight, product of:
              3.5018296 = idf(docFreq=3622, maxDocs=44218)
              0.045439374 = queryNorm
            0.19345059 = fieldWeight in 56, product of:
              1.4142135 = tf(freq=2.0), with freq of:
                2.0 = termFreq=2.0
              3.5018296 = idf(docFreq=3622, maxDocs=44218)
              0.0390625 = fieldNorm(doc=56)
      0.5 = coord(1/2)
  0.5 = coord(1/2)

Date: 22. 7.2006 16:32:43

Baloh, P.; Desouza, K.C.; Hackney, R.: Contextualizing organizational interventions of knowledge management systems : a design science perspectiveA domain analysis (2012) 0.01

0.00769551 = product of:
  0.01539102 = sum of:
    0.01539102 = product of:
      0.03078204 = sum of:
        0.03078204 = weight(_text_:22 in 241) [ClassicSimilarity], result of:
          0.03078204 = score(doc=241,freq=2.0), product of:
            0.15912095 = queryWeight, product of:
              3.5018296 = idf(docFreq=3622, maxDocs=44218)
              0.045439374 = queryNorm
            0.19345059 = fieldWeight in 241, product of:
              1.4142135 = tf(freq=2.0), with freq of:
                2.0 = termFreq=2.0
              3.5018296 = idf(docFreq=3622, maxDocs=44218)
              0.0390625 = fieldNorm(doc=241)
      0.5 = coord(1/2)
  0.5 = coord(1/2)

Date: 11. 6.2012 14:22:34

Soulier, L.; Jabeur, L.B.; Tamine, L.; Bahsoun, W.: On ranking relevant entities in heterogeneous networks using a language-based model (2013) 0.01

0.00769551 = product of:
  0.01539102 = sum of:
    0.01539102 = product of:
      0.03078204 = sum of:
        0.03078204 = weight(_text_:22 in 664) [ClassicSimilarity], result of:
          0.03078204 = score(doc=664,freq=2.0), product of:
            0.15912095 = queryWeight, product of:
              3.5018296 = idf(docFreq=3622, maxDocs=44218)
              0.045439374 = queryNorm
            0.19345059 = fieldWeight in 664, product of:
              1.4142135 = tf(freq=2.0), with freq of:
                2.0 = termFreq=2.0
              3.5018296 = idf(docFreq=3622, maxDocs=44218)
              0.0390625 = fieldNorm(doc=664)
      0.5 = coord(1/2)
  0.5 = coord(1/2)

Date: 22. 3.2013 19:34:49

Search (42 results, page 2 of 3)

Authors

Years

Languages

Themes