Document (#39685)

Author

Xu, F.
Liu, W.B.
Mingers, J.

Title

New journal classification methods based on the global h-index

Source

Information processing and management. 51(2015) no.2, S.50-61

Year

2015

Abstract

In this work we develop new journal classification methods based on the h-index. The introduction of the h-index for research evaluation has attracted much attention in the bibliometric study and research quality evaluation. The main purpose of using an h-index is to compare the index for different research units (e.g. researchers, journals, etc.) to differentiate their research performance. However the h-index is defined by only comparing citations counts of one's own publications, it is doubtful that the h index alone should be used for reliable comparisons among different research units, like researchers or journals. In this paper we propose a new global h-index (Gh-index), where the publications in the core are selected in comparison with all the publications of the units to be evaluated. Furthermore, we introduce some variants of the Gh-index to address the issue of discrimination power. We show that together with the original h-index, they can be used to evaluate and classify academic journals with some distinct advantages, in particular that they can produce an automatic classification into a number of categories without arbitrary cut-off points. We then carry out an empirical study for classification of operations research and management science (OR/MS) journals using this index, and compare it with other well-known journal ranking results such as the Association of Business Schools (ABS) Journal Quality Guide and the Committee of Professors in OR (COPIOR) ranking lists.

Content

Vgl.: doi: 10.1016/j.ipm.2014.10.011.

Theme

Informetrie

Object

h-index

Similar documents (content)

1. Leydesdorff, L.; Moya-Anegón, F. de; Nooy, W. de: Aggregated journal-journal citation relations in scopus and web of science matched and compared in terms of networks, maps, and interactive overlays (2016) 0.31

   0.31194153 = sum of:
     0.31194153 = product of:
       0.8665042 = sum of:
         0.014518576 = weight(abstract_txt:some in 3090) [ClassicSimilarity], result of:
           0.014518576 = score(doc=3090,freq=1.0), product of:
             0.06315973 = queryWeight, product of:
               3.6779325 = idf(docFreq=3037, maxDocs=44218)
               0.017172618 = queryNorm
             0.22987078 = fieldWeight in 3090, product of:
               1.0 = tf(freq=1.0), with freq of:
                 1.0 = termFreq=1.0
               3.6779325 = idf(docFreq=3037, maxDocs=44218)
               0.0625 = fieldNorm(doc=3090)
         0.015414 = weight(abstract_txt:they in 3090) [ClassicSimilarity], result of:
           0.015414 = score(doc=3090,freq=1.0), product of:
             0.06573063 = queryWeight, product of:
               1.0201494 = boost
               3.7520406 = idf(docFreq=2820, maxDocs=44218)
               0.017172618 = queryNorm
             0.23450254 = fieldWeight in 3090, product of:
               1.0 = tf(freq=1.0), with freq of:
                 1.0 = termFreq=1.0
               3.7520406 = idf(docFreq=2820, maxDocs=44218)
               0.0625 = fieldNorm(doc=3090)
         0.00911641 = weight(abstract_txt:with in 3090) [ClassicSimilarity], result of:
           0.00911641 = score(doc=3090,freq=1.0), product of:
             0.058351245 = queryWeight, product of:
               1.3593144 = boost
               2.4997334 = idf(docFreq=9868, maxDocs=44218)
               0.017172618 = queryNorm
             0.15623334 = fieldWeight in 3090, product of:
               1.0 = tf(freq=1.0), with freq of:
                 1.0 = termFreq=1.0
               2.4997334 = idf(docFreq=9868, maxDocs=44218)
               0.0625 = fieldNorm(doc=3090)
         0.05066789 = weight(abstract_txt:global in 3090) [ClassicSimilarity], result of:
           0.05066789 = score(doc=3090,freq=1.0), product of:
             0.14531578 = queryWeight, product of:
               1.5168278 = boost
               5.57879 = idf(docFreq=453, maxDocs=44218)
               0.017172618 = queryNorm
             0.3486744 = fieldWeight in 3090, product of:
               1.0 = tf(freq=1.0), with freq of:
                 1.0 = termFreq=1.0
               5.57879 = idf(docFreq=453, maxDocs=44218)
               0.0625 = fieldNorm(doc=3090)
         0.05121541 = weight(abstract_txt:ranking in 3090) [ClassicSimilarity], result of:
           0.05121541 = score(doc=3090,freq=1.0), product of:
             0.14636077 = queryWeight, product of:
               1.5222719 = boost
               5.598813 = idf(docFreq=444, maxDocs=44218)
               0.017172618 = queryNorm
             0.34992582 = fieldWeight in 3090, product of:
               1.0 = tf(freq=1.0), with freq of:
                 1.0 = termFreq=1.0
               5.598813 = idf(docFreq=444, maxDocs=44218)
               0.0625 = fieldNorm(doc=3090)
         0.051651753 = weight(abstract_txt:compare in 3090) [ClassicSimilarity], result of:
           0.051651753 = score(doc=3090,freq=1.0), product of:
             0.1471909 = queryWeight, product of:
               1.5265827 = boost
               5.6146684 = idf(docFreq=437, maxDocs=44218)
               0.017172618 = queryNorm
             0.35091677 = fieldWeight in 3090, product of:
               1.0 = tf(freq=1.0), with freq of:
                 1.0 = termFreq=1.0
               5.6146684 = idf(docFreq=437, maxDocs=44218)
               0.0625 = fieldNorm(doc=3090)
         0.24940598 = weight(abstract_txt:journals in 3090) [ClassicSimilarity], result of:
           0.24940598 = score(doc=3090,freq=10.0), product of:
             0.24590771 = queryWeight, product of:
               2.790493 = boost
               5.1316223 = idf(docFreq=709, maxDocs=44218)
               0.017172618 = queryNorm
             1.014226 = fieldWeight in 3090, product of:
               3.1622777 = tf(freq=10.0), with freq of:
                 10.0 = termFreq=10.0
               5.1316223 = idf(docFreq=709, maxDocs=44218)
               0.0625 = fieldNorm(doc=3090)
         0.1593153 = weight(abstract_txt:journal in 3090) [ClassicSimilarity], result of:
           0.1593153 = score(doc=3090,freq=4.0), product of:
             0.2475441 = queryWeight, product of:
               2.7997622 = boost
               5.1486683 = idf(docFreq=697, maxDocs=44218)
               0.017172618 = queryNorm
             0.64358354 = fieldWeight in 3090, product of:
               2.0 = tf(freq=4.0), with freq of:
                 4.0 = termFreq=4.0
               5.1486683 = idf(docFreq=697, maxDocs=44218)
               0.0625 = fieldNorm(doc=3090)
         0.26519892 = weight(abstract_txt:index in 3090) [ClassicSimilarity], result of:
           0.26519892 = score(doc=3090,freq=2.0), product of:
             0.63179934 = queryWeight, product of:
               7.7472057 = boost
               4.74895 = idf(docFreq=1040, maxDocs=44218)
               0.017172618 = queryNorm
             0.41975182 = fieldWeight in 3090, product of:
               1.4142135 = tf(freq=2.0), with freq of:
                 2.0 = termFreq=2.0
               4.74895 = idf(docFreq=1040, maxDocs=44218)
               0.0625 = fieldNorm(doc=3090)
       0.36 = coord(9/25)
   

2. Ahlgren, P.; Järvelin, K.: Measuring impact of twelve information scientists using the DCI index (2010) 0.27

   0.2651134 = sum of:
     0.2651134 = product of:
       0.9468336 = sum of:
         0.06586438 = weight(abstract_txt:evaluation in 3593) [ClassicSimilarity], result of:
           0.06586438 = score(doc=3593,freq=4.0), product of:
             0.09396468 = queryWeight, product of:
               1.2197257 = boost
               4.4860687 = idf(docFreq=1353, maxDocs=44218)
               0.017172618 = queryNorm
             0.70094824 = fieldWeight in 3593, product of:
               2.0 = tf(freq=4.0), with freq of:
                 4.0 = termFreq=4.0
               4.4860687 = idf(docFreq=1353, maxDocs=44218)
               0.078125 = fieldNorm(doc=3593)
         0.011395512 = weight(abstract_txt:with in 3593) [ClassicSimilarity], result of:
           0.011395512 = score(doc=3593,freq=1.0), product of:
             0.058351245 = queryWeight, product of:
               1.3593144 = boost
               2.4997334 = idf(docFreq=9868, maxDocs=44218)
               0.017172618 = queryNorm
             0.19529167 = fieldWeight in 3593, product of:
               1.0 = tf(freq=1.0), with freq of:
                 1.0 = termFreq=1.0
               2.4997334 = idf(docFreq=9868, maxDocs=44218)
               0.078125 = fieldNorm(doc=3593)
         0.06456469 = weight(abstract_txt:compare in 3593) [ClassicSimilarity], result of:
           0.06456469 = score(doc=3593,freq=1.0), product of:
             0.1471909 = queryWeight, product of:
               1.5265827 = boost
               5.6146684 = idf(docFreq=437, maxDocs=44218)
               0.017172618 = queryNorm
             0.43864596 = fieldWeight in 3593, product of:
               1.0 = tf(freq=1.0), with freq of:
                 1.0 = termFreq=1.0
               5.6146684 = idf(docFreq=437, maxDocs=44218)
               0.078125 = fieldNorm(doc=3593)
         0.13861345 = weight(abstract_txt:publications in 3593) [ClassicSimilarity], result of:
           0.13861345 = score(doc=3593,freq=3.0), product of:
             0.19442159 = queryWeight, product of:
               2.1488087 = boost
               5.268782 = idf(docFreq=618, maxDocs=44218)
               0.017172618 = queryNorm
             0.712953 = fieldWeight in 3593, product of:
               1.7320508 = tf(freq=3.0), with freq of:
                 3.0 = termFreq=3.0
               5.268782 = idf(docFreq=618, maxDocs=44218)
               0.078125 = fieldNorm(doc=3593)
         0.049314626 = weight(abstract_txt:research in 3593) [ClassicSimilarity], result of:
           0.049314626 = score(doc=3593,freq=2.0), product of:
             0.14078784 = queryWeight, product of:
               2.5859675 = boost
               3.170338 = idf(docFreq=5046, maxDocs=44218)
               0.017172618 = queryNorm
             0.35027617 = fieldWeight in 3593, product of:
               1.4142135 = tf(freq=2.0), with freq of:
                 2.0 = termFreq=2.0
               3.170338 = idf(docFreq=5046, maxDocs=44218)
               0.078125 = fieldNorm(doc=3593)
         0.1482711 = weight(abstract_txt:units in 3593) [ClassicSimilarity], result of:
           0.1482711 = score(doc=3593,freq=1.0), product of:
             0.29328218 = queryWeight, product of:
               2.639176 = boost
               6.4711404 = idf(docFreq=185, maxDocs=44218)
               0.017172618 = queryNorm
             0.50555784 = fieldWeight in 3593, product of:
               1.0 = tf(freq=1.0), with freq of:
                 1.0 = termFreq=1.0
               6.4711404 = idf(docFreq=185, maxDocs=44218)
               0.078125 = fieldNorm(doc=3593)
         0.46880993 = weight(abstract_txt:index in 3593) [ClassicSimilarity], result of:
           0.46880993 = score(doc=3593,freq=4.0), product of:
             0.63179934 = queryWeight, product of:
               7.7472057 = boost
               4.74895 = idf(docFreq=1040, maxDocs=44218)
               0.017172618 = queryNorm
             0.74202347 = fieldWeight in 3593, product of:
               2.0 = tf(freq=4.0), with freq of:
                 4.0 = termFreq=4.0
               4.74895 = idf(docFreq=1040, maxDocs=44218)
               0.078125 = fieldNorm(doc=3593)
       0.28 = coord(7/25)
   

3. Gingras, Y.: Bibliometrics and research evaluation : uses and abuses (2016) 0.26

   0.2615367 = sum of:
     0.2615367 = product of:
       0.65384173 = sum of:
         0.015414 = weight(abstract_txt:they in 3805) [ClassicSimilarity], result of:
           0.015414 = score(doc=3805,freq=1.0), product of:
             0.06573063 = queryWeight, product of:
               1.0201494 = boost
               3.7520406 = idf(docFreq=2820, maxDocs=44218)
               0.017172618 = queryNorm
             0.23450254 = fieldWeight in 3805, product of:
               1.0 = tf(freq=1.0), with freq of:
                 1.0 = termFreq=1.0
               3.7520406 = idf(docFreq=2820, maxDocs=44218)
               0.0625 = fieldNorm(doc=3805)
         0.020808317 = weight(abstract_txt:methods in 3805) [ClassicSimilarity], result of:
           0.020808317 = score(doc=3805,freq=1.0), product of:
             0.08028767 = queryWeight, product of:
               1.1274682 = boost
               4.146752 = idf(docFreq=1900, maxDocs=44218)
               0.017172618 = queryNorm
             0.259172 = fieldWeight in 3805, product of:
               1.0 = tf(freq=1.0), with freq of:
                 1.0 = termFreq=1.0
               4.146752 = idf(docFreq=1900, maxDocs=44218)
               0.0625 = fieldNorm(doc=3805)
         0.09611993 = weight(abstract_txt:professors in 3805) [ClassicSimilarity], result of:
           0.09611993 = score(doc=3805,freq=1.0), product of:
             0.17674883 = queryWeight, product of:
               1.1828867 = boost
               8.701155 = idf(docFreq=19, maxDocs=44218)
               0.017172618 = queryNorm
             0.54382217 = fieldWeight in 3805, product of:
               1.0 = tf(freq=1.0), with freq of:
                 1.0 = termFreq=1.0
               8.701155 = idf(docFreq=19, maxDocs=44218)
               0.0625 = fieldNorm(doc=3805)
         0.0526915 = weight(abstract_txt:evaluation in 3805) [ClassicSimilarity], result of:
           0.0526915 = score(doc=3805,freq=4.0), product of:
             0.09396468 = queryWeight, product of:
               1.2197257 = boost
               4.4860687 = idf(docFreq=1353, maxDocs=44218)
               0.017172618 = queryNorm
             0.5607586 = fieldWeight in 3805, product of:
               2.0 = tf(freq=4.0), with freq of:
                 4.0 = termFreq=4.0
               4.4860687 = idf(docFreq=1353, maxDocs=44218)
               0.0625 = fieldNorm(doc=3805)
         0.04157059 = weight(abstract_txt:quality in 3805) [ClassicSimilarity], result of:
           0.04157059 = score(doc=3805,freq=2.0), product of:
             0.101081505 = queryWeight, product of:
               1.2650734 = boost
               4.6528544 = idf(docFreq=1145, maxDocs=44218)
               0.017172618 = queryNorm
             0.4112581 = fieldWeight in 3805, product of:
               1.4142135 = tf(freq=2.0), with freq of:
                 2.0 = termFreq=2.0
               4.6528544 = idf(docFreq=1145, maxDocs=44218)
               0.0625 = fieldNorm(doc=3805)
         0.05066789 = weight(abstract_txt:global in 3805) [ClassicSimilarity], result of:
           0.05066789 = score(doc=3805,freq=1.0), product of:
             0.14531578 = queryWeight, product of:
               1.5168278 = boost
               5.57879 = idf(docFreq=453, maxDocs=44218)
               0.017172618 = queryNorm
             0.3486744 = fieldWeight in 3805, product of:
               1.0 = tf(freq=1.0), with freq of:
                 1.0 = termFreq=1.0
               5.57879 = idf(docFreq=453, maxDocs=44218)
               0.0625 = fieldNorm(doc=3805)
         0.05121541 = weight(abstract_txt:ranking in 3805) [ClassicSimilarity], result of:
           0.05121541 = score(doc=3805,freq=1.0), product of:
             0.14636077 = queryWeight, product of:
               1.5222719 = boost
               5.598813 = idf(docFreq=444, maxDocs=44218)
               0.017172618 = queryNorm
             0.34992582 = fieldWeight in 3805, product of:
               1.0 = tf(freq=1.0), with freq of:
                 1.0 = termFreq=1.0
               5.598813 = idf(docFreq=444, maxDocs=44218)
               0.0625 = fieldNorm(doc=3805)
         0.06402281 = weight(abstract_txt:publications in 3805) [ClassicSimilarity], result of:
           0.06402281 = score(doc=3805,freq=1.0), product of:
             0.19442159 = queryWeight, product of:
               2.1488087 = boost
               5.268782 = idf(docFreq=618, maxDocs=44218)
               0.017172618 = queryNorm
             0.32929888 = fieldWeight in 3805, product of:
               1.0 = tf(freq=1.0), with freq of:
                 1.0 = termFreq=1.0
               5.268782 = idf(docFreq=618, maxDocs=44218)
               0.0625 = fieldNorm(doc=3805)
         0.073807366 = weight(abstract_txt:research in 3805) [ClassicSimilarity], result of:
           0.073807366 = score(doc=3805,freq=7.0), product of:
             0.14078784 = queryWeight, product of:
               2.5859675 = boost
               3.170338 = idf(docFreq=5046, maxDocs=44218)
               0.017172618 = queryNorm
             0.5242453 = fieldWeight in 3805, product of:
               2.6457512 = tf(freq=7.0), with freq of:
                 7.0 = termFreq=7.0
               3.170338 = idf(docFreq=5046, maxDocs=44218)
               0.0625 = fieldNorm(doc=3805)
         0.18752396 = weight(abstract_txt:index in 3805) [ClassicSimilarity], result of:
           0.18752396 = score(doc=3805,freq=1.0), product of:
             0.63179934 = queryWeight, product of:
               7.7472057 = boost
               4.74895 = idf(docFreq=1040, maxDocs=44218)
               0.017172618 = queryNorm
             0.29680938 = fieldWeight in 3805, product of:
               1.0 = tf(freq=1.0), with freq of:
                 1.0 = termFreq=1.0
               4.74895 = idf(docFreq=1040, maxDocs=44218)
               0.0625 = fieldNorm(doc=3805)
       0.4 = coord(10/25)
   

4. Ferrara, E.; Romero, A.E.: Scientific impact evaluation and the effect of self-citations : mitigating the bias by discounting the h-index (2013) 0.25

   0.25381455 = sum of:
     0.25381455 = product of:
       0.79317045 = sum of:
         0.02634575 = weight(abstract_txt:evaluation in 1112) [ClassicSimilarity], result of:
           0.02634575 = score(doc=1112,freq=1.0), product of:
             0.09396468 = queryWeight, product of:
               1.2197257 = boost
               4.4860687 = idf(docFreq=1353, maxDocs=44218)
               0.017172618 = queryNorm
             0.2803793 = fieldWeight in 1112, product of:
               1.0 = tf(freq=1.0), with freq of:
                 1.0 = termFreq=1.0
               4.4860687 = idf(docFreq=1353, maxDocs=44218)
               0.0625 = fieldNorm(doc=1112)
         0.032379024 = weight(abstract_txt:researchers in 1112) [ClassicSimilarity], result of:
           0.032379024 = score(doc=1112,freq=1.0), product of:
             0.10781191 = queryWeight, product of:
               1.3065115 = boost
               4.805261 = idf(docFreq=983, maxDocs=44218)
               0.017172618 = queryNorm
             0.30032882 = fieldWeight in 1112, product of:
               1.0 = tf(freq=1.0), with freq of:
                 1.0 = termFreq=1.0
               4.805261 = idf(docFreq=983, maxDocs=44218)
               0.0625 = fieldNorm(doc=1112)
         0.05121541 = weight(abstract_txt:ranking in 1112) [ClassicSimilarity], result of:
           0.05121541 = score(doc=1112,freq=1.0), product of:
             0.14636077 = queryWeight, product of:
               1.5222719 = boost
               5.598813 = idf(docFreq=444, maxDocs=44218)
               0.017172618 = queryNorm
             0.34992582 = fieldWeight in 1112, product of:
               1.0 = tf(freq=1.0), with freq of:
                 1.0 = termFreq=1.0
               5.598813 = idf(docFreq=444, maxDocs=44218)
               0.0625 = fieldNorm(doc=1112)
         0.06402281 = weight(abstract_txt:publications in 1112) [ClassicSimilarity], result of:
           0.06402281 = score(doc=1112,freq=1.0), product of:
             0.19442159 = queryWeight, product of:
               2.1488087 = boost
               5.268782 = idf(docFreq=618, maxDocs=44218)
               0.017172618 = queryNorm
             0.32929888 = fieldWeight in 1112, product of:
               1.0 = tf(freq=1.0), with freq of:
                 1.0 = termFreq=1.0
               5.268782 = idf(docFreq=618, maxDocs=44218)
               0.0625 = fieldNorm(doc=1112)
         0.027896564 = weight(abstract_txt:research in 1112) [ClassicSimilarity], result of:
           0.027896564 = score(doc=1112,freq=1.0), product of:
             0.14078784 = queryWeight, product of:
               2.5859675 = boost
               3.170338 = idf(docFreq=5046, maxDocs=44218)
               0.017172618 = queryNorm
             0.19814612 = fieldWeight in 1112, product of:
               1.0 = tf(freq=1.0), with freq of:
                 1.0 = termFreq=1.0
               3.170338 = idf(docFreq=5046, maxDocs=44218)
               0.0625 = fieldNorm(doc=1112)
         0.13660528 = weight(abstract_txt:journals in 1112) [ClassicSimilarity], result of:
           0.13660528 = score(doc=1112,freq=3.0), product of:
             0.24590771 = queryWeight, product of:
               2.790493 = boost
               5.1316223 = idf(docFreq=709, maxDocs=44218)
               0.017172618 = queryNorm
             0.5555144 = fieldWeight in 1112, product of:
               1.7320508 = tf(freq=3.0), with freq of:
                 3.0 = termFreq=3.0
               5.1316223 = idf(docFreq=709, maxDocs=44218)
               0.0625 = fieldNorm(doc=1112)
         0.07965765 = weight(abstract_txt:journal in 1112) [ClassicSimilarity], result of:
           0.07965765 = score(doc=1112,freq=1.0), product of:
             0.2475441 = queryWeight, product of:
               2.7997622 = boost
               5.1486683 = idf(docFreq=697, maxDocs=44218)
               0.017172618 = queryNorm
             0.32179177 = fieldWeight in 1112, product of:
               1.0 = tf(freq=1.0), with freq of:
                 1.0 = termFreq=1.0
               5.1486683 = idf(docFreq=697, maxDocs=44218)
               0.0625 = fieldNorm(doc=1112)
         0.37504792 = weight(abstract_txt:index in 1112) [ClassicSimilarity], result of:
           0.37504792 = score(doc=1112,freq=4.0), product of:
             0.63179934 = queryWeight, product of:
               7.7472057 = boost
               4.74895 = idf(docFreq=1040, maxDocs=44218)
               0.017172618 = queryNorm
             0.59361875 = fieldWeight in 1112, product of:
               2.0 = tf(freq=4.0), with freq of:
                 4.0 = termFreq=4.0
               4.74895 = idf(docFreq=1040, maxDocs=44218)
               0.0625 = fieldNorm(doc=1112)
       0.32 = coord(8/25)
   

5. Adler, R.; Ewing, J.; Taylor, P.: Citation statistics : A report from the International Mathematical Union (IMU) in cooperation with the International Council of Industrial and Applied Mathematics (ICIAM) and the Institute of Mathematical Statistics (IMS) (2008) 0.25

   0.24762462 = sum of:
     0.24762462 = product of:
       0.51588464 = sum of:
         0.010266184 = weight(abstract_txt:some in 2417) [ClassicSimilarity], result of:
           0.010266184 = score(doc=2417,freq=2.0), product of:
             0.06315973 = queryWeight, product of:
               3.6779325 = idf(docFreq=3037, maxDocs=44218)
               0.017172618 = queryNorm
             0.16254319 = fieldWeight in 2417, product of:
               1.4142135 = tf(freq=2.0), with freq of:
                 2.0 = termFreq=2.0
               3.6779325 = idf(docFreq=3037, maxDocs=44218)
               0.03125 = fieldNorm(doc=2417)
         0.018878218 = weight(abstract_txt:they in 2417) [ClassicSimilarity], result of:
           0.018878218 = score(doc=2417,freq=6.0), product of:
             0.06573063 = queryWeight, product of:
               1.0201494 = boost
               3.7520406 = idf(docFreq=2820, maxDocs=44218)
               0.017172618 = queryNorm
             0.2872058 = fieldWeight in 2417, product of:
               2.4494898 = tf(freq=6.0), with freq of:
                 6.0 = termFreq=6.0
               3.7520406 = idf(docFreq=2820, maxDocs=44218)
               0.03125 = fieldNorm(doc=2417)
         0.030866858 = weight(abstract_txt:variants in 2417) [ClassicSimilarity], result of:
           0.030866858 = score(doc=2417,freq=1.0), product of:
             0.13157171 = queryWeight, product of:
               1.0205778 = boost
               7.5072327 = idf(docFreq=65, maxDocs=44218)
               0.017172618 = queryNorm
             0.23460102 = fieldWeight in 2417, product of:
               1.0 = tf(freq=1.0), with freq of:
                 1.0 = termFreq=1.0
               7.5072327 = idf(docFreq=65, maxDocs=44218)
               0.03125 = fieldNorm(doc=2417)
         0.014713702 = weight(abstract_txt:methods in 2417) [ClassicSimilarity], result of:
           0.014713702 = score(doc=2417,freq=2.0), product of:
             0.08028767 = queryWeight, product of:
               1.1274682 = boost
               4.146752 = idf(docFreq=1900, maxDocs=44218)
               0.017172618 = queryNorm
             0.18326227 = fieldWeight in 2417, product of:
               1.4142135 = tf(freq=2.0), with freq of:
                 2.0 = termFreq=2.0
               4.146752 = idf(docFreq=1900, maxDocs=44218)
               0.03125 = fieldNorm(doc=2417)
         0.032864437 = weight(abstract_txt:quality in 2417) [ClassicSimilarity], result of:
           0.032864437 = score(doc=2417,freq=5.0), product of:
             0.101081505 = queryWeight, product of:
               1.2650734 = boost
               4.6528544 = idf(docFreq=1145, maxDocs=44218)
               0.017172618 = queryNorm
             0.32512808 = fieldWeight in 2417, product of:
               2.236068 = tf(freq=5.0), with freq of:
                 5.0 = termFreq=5.0
               4.6528544 = idf(docFreq=1145, maxDocs=44218)
               0.03125 = fieldNorm(doc=2417)
         0.00911641 = weight(abstract_txt:with in 2417) [ClassicSimilarity], result of:
           0.00911641 = score(doc=2417,freq=4.0), product of:
             0.058351245 = queryWeight, product of:
               1.3593144 = boost
               2.4997334 = idf(docFreq=9868, maxDocs=44218)
               0.017172618 = queryNorm
             0.15623334 = fieldWeight in 2417, product of:
               2.0 = tf(freq=4.0), with freq of:
                 4.0 = termFreq=4.0
               2.4997334 = idf(docFreq=9868, maxDocs=44218)
               0.03125 = fieldNorm(doc=2417)
         0.025607705 = weight(abstract_txt:ranking in 2417) [ClassicSimilarity], result of:
           0.025607705 = score(doc=2417,freq=1.0), product of:
             0.14636077 = queryWeight, product of:
               1.5222719 = boost
               5.598813 = idf(docFreq=444, maxDocs=44218)
               0.017172618 = queryNorm
             0.17496291 = fieldWeight in 2417, product of:
               1.0 = tf(freq=1.0), with freq of:
                 1.0 = termFreq=1.0
               5.598813 = idf(docFreq=444, maxDocs=44218)
               0.03125 = fieldNorm(doc=2417)
         0.036523305 = weight(abstract_txt:compare in 2417) [ClassicSimilarity], result of:
           0.036523305 = score(doc=2417,freq=2.0), product of:
             0.1471909 = queryWeight, product of:
               1.5265827 = boost
               5.6146684 = idf(docFreq=437, maxDocs=44218)
               0.017172618 = queryNorm
             0.24813563 = fieldWeight in 2417, product of:
               1.4142135 = tf(freq=2.0), with freq of:
                 2.0 = termFreq=2.0
               5.6146684 = idf(docFreq=437, maxDocs=44218)
               0.03125 = fieldNorm(doc=2417)
         0.0394517 = weight(abstract_txt:research in 2417) [ClassicSimilarity], result of:
           0.0394517 = score(doc=2417,freq=8.0), product of:
             0.14078784 = queryWeight, product of:
               2.5859675 = boost
               3.170338 = idf(docFreq=5046, maxDocs=44218)
               0.017172618 = queryNorm
             0.28022093 = fieldWeight in 2417, product of:
               2.828427 = tf(freq=8.0), with freq of:
                 8.0 = termFreq=8.0
               3.170338 = idf(docFreq=5046, maxDocs=44218)
               0.03125 = fieldNorm(doc=2417)
         0.07886909 = weight(abstract_txt:journals in 2417) [ClassicSimilarity], result of:
           0.07886909 = score(doc=2417,freq=4.0), product of:
             0.24590771 = queryWeight, product of:
               2.790493 = boost
               5.1316223 = idf(docFreq=709, maxDocs=44218)
               0.017172618 = queryNorm
             0.3207264 = fieldWeight in 2417, product of:
               2.0 = tf(freq=4.0), with freq of:
                 4.0 = termFreq=4.0
               5.1316223 = idf(docFreq=709, maxDocs=44218)
               0.03125 = fieldNorm(doc=2417)
         0.056326464 = weight(abstract_txt:journal in 2417) [ClassicSimilarity], result of:
           0.056326464 = score(doc=2417,freq=2.0), product of:
             0.2475441 = queryWeight, product of:
               2.7997622 = boost
               5.1486683 = idf(docFreq=697, maxDocs=44218)
               0.017172618 = queryNorm
             0.22754113 = fieldWeight in 2417, product of:
               1.4142135 = tf(freq=2.0), with freq of:
                 2.0 = termFreq=2.0
               5.1486683 = idf(docFreq=697, maxDocs=44218)
               0.03125 = fieldNorm(doc=2417)
         0.16240053 = weight(abstract_txt:index in 2417) [ClassicSimilarity], result of:
           0.16240053 = score(doc=2417,freq=3.0), product of:
             0.63179934 = queryWeight, product of:
               7.7472057 = boost
               4.74895 = idf(docFreq=1040, maxDocs=44218)
               0.017172618 = queryNorm
             0.25704446 = fieldWeight in 2417, product of:
               1.7320508 = tf(freq=3.0), with freq of:
                 3.0 = termFreq=3.0
               4.74895 = idf(docFreq=1040, maxDocs=44218)
               0.03125 = fieldNorm(doc=2417)
       0.48 = coord(12/25)