-
Tober, M.; Hennig, L.; Furch, D.: SEO Ranking-Faktoren und Rang-Korrelationen 2014 : Google Deutschland (2014)
0.04
0.042971283 = product of:
0.08594257 = sum of:
0.08594257 = sum of:
0.02883681 = weight(_text_:m in 1484) [ClassicSimilarity], result of:
0.02883681 = score(doc=1484,freq=2.0), product of:
0.13110629 = queryWeight, product of:
2.4884486 = idf(docFreq=9980, maxDocs=44218)
0.052685954 = queryNorm
0.21994986 = fieldWeight in 1484, product of:
1.4142135 = tf(freq=2.0), with freq of:
2.0 = termFreq=2.0
2.4884486 = idf(docFreq=9980, maxDocs=44218)
0.0625 = fieldNorm(doc=1484)
0.057105757 = weight(_text_:22 in 1484) [ClassicSimilarity], result of:
0.057105757 = score(doc=1484,freq=2.0), product of:
0.18449724 = queryWeight, product of:
3.5018296 = idf(docFreq=3622, maxDocs=44218)
0.052685954 = queryNorm
0.30952093 = fieldWeight in 1484, product of:
1.4142135 = tf(freq=2.0), with freq of:
2.0 = termFreq=2.0
3.5018296 = idf(docFreq=3622, maxDocs=44218)
0.0625 = fieldNorm(doc=1484)
0.5 = coord(1/2)
- Date
- 13. 9.2014 14:45:22
-
Soulier, L.; Jabeur, L.B.; Tamine, L.; Bahsoun, W.: On ranking relevant entities in heterogeneous networks using a language-based model (2013)
0.04
0.039231505 = sum of:
0.021385957 = product of:
0.085543826 = sum of:
0.085543826 = weight(_text_:authors in 664) [ClassicSimilarity], result of:
0.085543826 = score(doc=664,freq=4.0), product of:
0.24018547 = queryWeight, product of:
4.558814 = idf(docFreq=1258, maxDocs=44218)
0.052685954 = queryNorm
0.35615736 = fieldWeight in 664, product of:
2.0 = tf(freq=4.0), with freq of:
4.0 = termFreq=4.0
4.558814 = idf(docFreq=1258, maxDocs=44218)
0.0390625 = fieldNorm(doc=664)
0.25 = coord(1/4)
0.017845549 = product of:
0.035691097 = sum of:
0.035691097 = weight(_text_:22 in 664) [ClassicSimilarity], result of:
0.035691097 = score(doc=664,freq=2.0), product of:
0.18449724 = queryWeight, product of:
3.5018296 = idf(docFreq=3622, maxDocs=44218)
0.052685954 = 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)
- Abstract
- A new challenge, accessing multiple relevant entities, arises from the availability of linked heterogeneous data. In this article, we address more specifically the problem of accessing relevant entities, such as publications and authors within a bibliographic network, given an information need. We propose a novel algorithm, called BibRank, that estimates a joint relevance of documents and authors within a bibliographic network. This model ranks each type of entity using a score propagation algorithm with respect to the query topic and the structure of the underlying bi-type information entity network. Evidence sources, namely content-based and network-based scores, are both used to estimate the topical similarity between connected entities. For this purpose, authorship relationships are analyzed through a language model-based score on the one hand and on the other hand, non topically related entities of the same type are detected through marginal citations. The article reports the results of experiments using the Bibrank algorithm for an information retrieval task. The CiteSeerX bibliographic data set forms the basis for the topical query automatic generation and evaluation. We show that a statistically significant improvement over closely related ranking models is achieved.
- Date
- 22. 3.2013 19:34:49
-
Ojala, M.: Commands that RANKle (1997)
0.04
0.03861385 = sum of:
0.024195446 = product of:
0.09678178 = sum of:
0.09678178 = weight(_text_:authors in 428) [ClassicSimilarity], result of:
0.09678178 = score(doc=428,freq=2.0), product of:
0.24018547 = queryWeight, product of:
4.558814 = idf(docFreq=1258, maxDocs=44218)
0.052685954 = queryNorm
0.40294603 = fieldWeight in 428, product of:
1.4142135 = tf(freq=2.0), with freq of:
2.0 = termFreq=2.0
4.558814 = idf(docFreq=1258, maxDocs=44218)
0.0625 = fieldNorm(doc=428)
0.25 = coord(1/4)
0.014418405 = product of:
0.02883681 = sum of:
0.02883681 = weight(_text_:m in 428) [ClassicSimilarity], result of:
0.02883681 = score(doc=428,freq=2.0), product of:
0.13110629 = queryWeight, product of:
2.4884486 = idf(docFreq=9980, maxDocs=44218)
0.052685954 = queryNorm
0.21994986 = fieldWeight in 428, product of:
1.4142135 = tf(freq=2.0), with freq of:
2.0 = termFreq=2.0
2.4884486 = idf(docFreq=9980, maxDocs=44218)
0.0625 = fieldNorm(doc=428)
0.5 = coord(1/2)
- Abstract
- Examines the RANK command on DIALOG using a statistical analysis of articles in DATABASE as an example. The RANK command was used to find authors, company names, and length of articles. Use of the command revealed a number of complexities and revealed some problematic indexing on the part of the database producers. The LEXIS-NEXIS RANK command was also used, but this fulfils a different function to the command of the same name in DIALOG
-
Berry, M.W.; Browne, M.: Understanding search engines : mathematical modeling and text retrieval (1999)
0.03
0.033439614 = sum of:
0.018146584 = product of:
0.072586335 = sum of:
0.072586335 = weight(_text_:authors in 5777) [ClassicSimilarity], result of:
0.072586335 = score(doc=5777,freq=2.0), product of:
0.24018547 = queryWeight, product of:
4.558814 = idf(docFreq=1258, maxDocs=44218)
0.052685954 = queryNorm
0.30220953 = fieldWeight in 5777, product of:
1.4142135 = tf(freq=2.0), with freq of:
2.0 = termFreq=2.0
4.558814 = idf(docFreq=1258, maxDocs=44218)
0.046875 = fieldNorm(doc=5777)
0.25 = coord(1/4)
0.015293028 = product of:
0.030586056 = sum of:
0.030586056 = weight(_text_:m in 5777) [ClassicSimilarity], result of:
0.030586056 = score(doc=5777,freq=4.0), product of:
0.13110629 = queryWeight, product of:
2.4884486 = idf(docFreq=9980, maxDocs=44218)
0.052685954 = queryNorm
0.23329206 = fieldWeight in 5777, product of:
2.0 = tf(freq=4.0), with freq of:
4.0 = termFreq=4.0
2.4884486 = idf(docFreq=9980, maxDocs=44218)
0.046875 = fieldNorm(doc=5777)
0.5 = coord(1/2)
- Abstract
- This book discusses many of the key design issues for building search engines and emphazises the important role that applied mathematics can play in improving information retrieval. The authors discuss not only important data structures, algorithms, and software but also user-centered issues such as interfaces, manual indexing, and document preparation. They also present some of the current problems in information retrieval that many not be familiar to applied mathematicians and computer scientists and some of the driving computational methods (SVD, SDD) for automated conceptual indexing
- Type
- m
-
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)
0.03
0.032228462 = product of:
0.064456925 = sum of:
0.064456925 = sum of:
0.021627607 = weight(_text_:m in 1451) [ClassicSimilarity], result of:
0.021627607 = score(doc=1451,freq=2.0), product of:
0.13110629 = queryWeight, product of:
2.4884486 = idf(docFreq=9980, maxDocs=44218)
0.052685954 = queryNorm
0.1649624 = fieldWeight in 1451, product of:
1.4142135 = tf(freq=2.0), with freq of:
2.0 = termFreq=2.0
2.4884486 = idf(docFreq=9980, maxDocs=44218)
0.046875 = fieldNorm(doc=1451)
0.042829316 = weight(_text_:22 in 1451) [ClassicSimilarity], result of:
0.042829316 = score(doc=1451,freq=2.0), product of:
0.18449724 = queryWeight, product of:
3.5018296 = idf(docFreq=3622, maxDocs=44218)
0.052685954 = 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)
- Date
- 22. 3.2003 19:27:36
-
Furner, J.: ¬A unifying model of document relatedness for hybrid search engines (2003)
0.03
0.032228462 = product of:
0.064456925 = sum of:
0.064456925 = sum of:
0.021627607 = weight(_text_:m in 2717) [ClassicSimilarity], result of:
0.021627607 = score(doc=2717,freq=2.0), product of:
0.13110629 = queryWeight, product of:
2.4884486 = idf(docFreq=9980, maxDocs=44218)
0.052685954 = queryNorm
0.1649624 = fieldWeight in 2717, product of:
1.4142135 = tf(freq=2.0), with freq of:
2.0 = termFreq=2.0
2.4884486 = idf(docFreq=9980, maxDocs=44218)
0.046875 = fieldNorm(doc=2717)
0.042829316 = weight(_text_:22 in 2717) [ClassicSimilarity], result of:
0.042829316 = score(doc=2717,freq=2.0), product of:
0.18449724 = queryWeight, product of:
3.5018296 = idf(docFreq=3622, maxDocs=44218)
0.052685954 = 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)
- Date
- 11. 9.2004 17:32:22
- Source
- Challenges in knowledge representation and organization for the 21st century: Integration of knowledge across boundaries. Proceedings of the 7th ISKO International Conference Granada, Spain, July 10-13, 2002. Ed.: M. López-Huertas
-
Habernal, I.; Konopík, M.; Rohlík, O.: Question answering (2012)
0.03
0.028960388 = sum of:
0.018146584 = product of:
0.072586335 = sum of:
0.072586335 = weight(_text_:authors in 101) [ClassicSimilarity], result of:
0.072586335 = score(doc=101,freq=2.0), product of:
0.24018547 = queryWeight, product of:
4.558814 = idf(docFreq=1258, maxDocs=44218)
0.052685954 = queryNorm
0.30220953 = fieldWeight in 101, product of:
1.4142135 = tf(freq=2.0), with freq of:
2.0 = termFreq=2.0
4.558814 = idf(docFreq=1258, maxDocs=44218)
0.046875 = fieldNorm(doc=101)
0.25 = coord(1/4)
0.010813803 = product of:
0.021627607 = sum of:
0.021627607 = weight(_text_:m in 101) [ClassicSimilarity], result of:
0.021627607 = score(doc=101,freq=2.0), product of:
0.13110629 = queryWeight, product of:
2.4884486 = idf(docFreq=9980, maxDocs=44218)
0.052685954 = queryNorm
0.1649624 = fieldWeight in 101, product of:
1.4142135 = tf(freq=2.0), with freq of:
2.0 = termFreq=2.0
2.4884486 = idf(docFreq=9980, maxDocs=44218)
0.046875 = fieldNorm(doc=101)
0.5 = coord(1/2)
- Abstract
- Question Answering is an area of information retrieval with the added challenge of applying sophisticated techniques to identify the complex syntactic and semantic relationships present in text in order to provide a more sophisticated and satisfactory response to the user's information needs. For this reason, the authors see question answering as the next step beyond standard information retrieval. In this chapter state of the art question answering is covered focusing on providing an overview of systems, techniques and approaches that are likely to be employed in the next generations of search engines. Special attention is paid to question answering using the World Wide Web as the data source and to question answering exploiting the possibilities of Semantic Web. Considerations about the current issues and prospects for promising future research are also provided.
-
Voorhees, E.M.: Implementing agglomerative hierarchic clustering algorithms for use in document retrieval (1986)
0.03
0.028552879 = product of:
0.057105757 = sum of:
0.057105757 = product of:
0.114211515 = sum of:
0.114211515 = weight(_text_:22 in 402) [ClassicSimilarity], result of:
0.114211515 = score(doc=402,freq=2.0), product of:
0.18449724 = queryWeight, product of:
3.5018296 = idf(docFreq=3622, maxDocs=44218)
0.052685954 = queryNorm
0.61904186 = fieldWeight in 402, product of:
1.4142135 = tf(freq=2.0), with freq of:
2.0 = termFreq=2.0
3.5018296 = idf(docFreq=3622, maxDocs=44218)
0.125 = fieldNorm(doc=402)
0.5 = coord(1/2)
0.5 = coord(1/2)
- Source
- Information processing and management. 22(1986) no.6, S.465-476
-
Berry, M.W.; Browne, M.: Understanding search engines : mathematical modeling and text retrieval (2005)
0.03
0.027304117 = sum of:
0.017108764 = product of:
0.06843506 = sum of:
0.06843506 = weight(_text_:authors in 7) [ClassicSimilarity], result of:
0.06843506 = score(doc=7,freq=4.0), product of:
0.24018547 = queryWeight, product of:
4.558814 = idf(docFreq=1258, maxDocs=44218)
0.052685954 = queryNorm
0.28492588 = fieldWeight in 7, product of:
2.0 = tf(freq=4.0), with freq of:
4.0 = termFreq=4.0
4.558814 = idf(docFreq=1258, maxDocs=44218)
0.03125 = fieldNorm(doc=7)
0.25 = coord(1/4)
0.010195352 = product of:
0.020390704 = sum of:
0.020390704 = weight(_text_:m in 7) [ClassicSimilarity], result of:
0.020390704 = score(doc=7,freq=4.0), product of:
0.13110629 = queryWeight, product of:
2.4884486 = idf(docFreq=9980, maxDocs=44218)
0.052685954 = queryNorm
0.15552804 = fieldWeight in 7, product of:
2.0 = tf(freq=4.0), with freq of:
4.0 = termFreq=4.0
2.4884486 = idf(docFreq=9980, maxDocs=44218)
0.03125 = fieldNorm(doc=7)
0.5 = coord(1/2)
- Abstract
- The second edition of Understanding Search Engines: Mathematical Modeling and Text Retrieval follows the basic premise of the first edition by discussing many of the key design issues for building search engines and emphasizing the important role that applied mathematics can play in improving information retrieval. The authors discuss important data structures, algorithms, and software as well as user-centered issues such as interfaces, manual indexing, and document preparation. Significant changes bring the text up to date on current information retrieval methods: for example the addition of a new chapter on link-structure algorithms used in search engines such as Google. The chapter on user interface has been rewritten to specifically focus on search engine usability. In addition the authors have added new recommendations for further reading and expanded the bibliography, and have updated and streamlined the index to make it more reader friendly.
- Type
- m
-
Dominich, S.: Mathematical foundations of information retrieval (2001)
0.03
0.026857052 = product of:
0.053714104 = sum of:
0.053714104 = sum of:
0.018023007 = weight(_text_:m in 1753) [ClassicSimilarity], result of:
0.018023007 = score(doc=1753,freq=2.0), product of:
0.13110629 = queryWeight, product of:
2.4884486 = idf(docFreq=9980, maxDocs=44218)
0.052685954 = queryNorm
0.13746867 = fieldWeight in 1753, product of:
1.4142135 = tf(freq=2.0), with freq of:
2.0 = termFreq=2.0
2.4884486 = idf(docFreq=9980, maxDocs=44218)
0.0390625 = fieldNorm(doc=1753)
0.035691097 = weight(_text_:22 in 1753) [ClassicSimilarity], result of:
0.035691097 = score(doc=1753,freq=2.0), product of:
0.18449724 = queryWeight, product of:
3.5018296 = idf(docFreq=3622, maxDocs=44218)
0.052685954 = queryNorm
0.19345059 = fieldWeight in 1753, 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=1753)
0.5 = coord(1/2)
- Date
- 22. 3.2008 12:26:32
- Type
- m
-
Smeaton, A.F.; Rijsbergen, C.J. van: ¬The retrieval effects of query expansion on a feedback document retrieval system (1983)
0.02
0.024983767 = product of:
0.049967535 = sum of:
0.049967535 = product of:
0.09993507 = sum of:
0.09993507 = weight(_text_:22 in 2134) [ClassicSimilarity], result of:
0.09993507 = score(doc=2134,freq=2.0), product of:
0.18449724 = queryWeight, product of:
3.5018296 = idf(docFreq=3622, maxDocs=44218)
0.052685954 = queryNorm
0.5416616 = fieldWeight in 2134, product of:
1.4142135 = tf(freq=2.0), with freq of:
2.0 = termFreq=2.0
3.5018296 = idf(docFreq=3622, maxDocs=44218)
0.109375 = fieldNorm(doc=2134)
0.5 = coord(1/2)
0.5 = coord(1/2)
- Date
- 30. 3.2001 13:32:22
-
Back, J.: ¬An evaluation of relevancy ranking techniques used by Internet search engines (2000)
0.02
0.024983767 = product of:
0.049967535 = sum of:
0.049967535 = product of:
0.09993507 = sum of:
0.09993507 = weight(_text_:22 in 3445) [ClassicSimilarity], result of:
0.09993507 = score(doc=3445,freq=2.0), product of:
0.18449724 = queryWeight, product of:
3.5018296 = idf(docFreq=3622, maxDocs=44218)
0.052685954 = queryNorm
0.5416616 = fieldWeight in 3445, product of:
1.4142135 = tf(freq=2.0), with freq of:
2.0 = termFreq=2.0
3.5018296 = idf(docFreq=3622, maxDocs=44218)
0.109375 = fieldNorm(doc=3445)
0.5 = coord(1/2)
0.5 = coord(1/2)
- Date
- 25. 8.2005 17:42:22
-
Khoo, C.S.G.; Wan, K.-W.: ¬A simple relevancy-ranking strategy for an interface to Boolean OPACs (2004)
0.02
0.023077391 = sum of:
0.010585507 = product of:
0.04234203 = sum of:
0.04234203 = weight(_text_:authors in 2509) [ClassicSimilarity], result of:
0.04234203 = score(doc=2509,freq=2.0), product of:
0.24018547 = queryWeight, product of:
4.558814 = idf(docFreq=1258, maxDocs=44218)
0.052685954 = queryNorm
0.17628889 = fieldWeight in 2509, product of:
1.4142135 = tf(freq=2.0), with freq of:
2.0 = termFreq=2.0
4.558814 = idf(docFreq=1258, maxDocs=44218)
0.02734375 = fieldNorm(doc=2509)
0.25 = coord(1/4)
0.012491884 = product of:
0.024983767 = sum of:
0.024983767 = weight(_text_:22 in 2509) [ClassicSimilarity], result of:
0.024983767 = score(doc=2509,freq=2.0), product of:
0.18449724 = queryWeight, product of:
3.5018296 = idf(docFreq=3622, maxDocs=44218)
0.052685954 = queryNorm
0.1354154 = fieldWeight in 2509, product of:
1.4142135 = tf(freq=2.0), with freq of:
2.0 = termFreq=2.0
3.5018296 = idf(docFreq=3622, maxDocs=44218)
0.02734375 = fieldNorm(doc=2509)
0.5 = coord(1/2)
- Abstract
- A relevancy-ranking algorithm for a natural language interface to Boolean online public access catalogs (OPACs) was formulated and compared with that currently used in a knowledge-based search interface called the E-Referencer, being developed by the authors. The algorithm makes use of seven weIl-known ranking criteria: breadth of match, section weighting, proximity of query words, variant word forms (stemming), document frequency, term frequency and document length. The algorithm converts a natural language query into a series of increasingly broader Boolean search statements. In a small experiment with ten subjects in which the algorithm was simulated by hand, the algorithm obtained good results with a mean overall precision of 0.42 and mean average precision of 0.62, representing a 27 percent improvement in precision and 41 percent improvement in average precision compared to the E-Referencer. The usefulness of each step in the algorithm was analyzed and suggestions are made for improving the algorithm.
- Source
- Electronic library. 22(2004) no.2, S.112-120
-
Ding, Y.; Yan, E.; Frazho, A.; Caverlee, J.: PageRank for ranking authors in co-citation networks (2009)
0.02
0.022224935 = product of:
0.04444987 = sum of:
0.04444987 = product of:
0.17779948 = sum of:
0.17779948 = weight(_text_:authors in 3161) [ClassicSimilarity], result of:
0.17779948 = score(doc=3161,freq=12.0), product of:
0.24018547 = queryWeight, product of:
4.558814 = idf(docFreq=1258, maxDocs=44218)
0.052685954 = queryNorm
0.7402591 = fieldWeight in 3161, product of:
3.4641016 = tf(freq=12.0), with freq of:
12.0 = termFreq=12.0
4.558814 = idf(docFreq=1258, maxDocs=44218)
0.046875 = fieldNorm(doc=3161)
0.25 = coord(1/4)
0.5 = coord(1/2)
- Abstract
- This paper studies how varied damping factors in the PageRank algorithm influence the ranking of authors and proposes weighted PageRank algorithms. We selected the 108 most highly cited authors in the information retrieval (IR) area from the 1970s to 2008 to form the author co-citation network. We calculated the ranks of these 108 authors based on PageRank with the damping factor ranging from 0.05 to 0.95. In order to test the relationship between different measures, we compared PageRank and weighted PageRank results with the citation ranking, h-index, and centrality measures. We found that in our author co-citation network, citation rank is highly correlated with PageRank with different damping factors and also with different weighted PageRank algorithms; citation rank and PageRank are not significantly correlated with centrality measures; and h-index rank does not significantly correlate with centrality measures but does significantly correlate with other measures. The key factors that have impact on the PageRank of authors in the author co-citation network are being co-cited with important authors.
-
Fuhr, N.: Ranking-Experimente mit gewichteter Indexierung (1986)
0.02
0.021414658 = product of:
0.042829316 = sum of:
0.042829316 = product of:
0.08565863 = sum of:
0.08565863 = weight(_text_:22 in 58) [ClassicSimilarity], result of:
0.08565863 = score(doc=58,freq=2.0), product of:
0.18449724 = queryWeight, product of:
3.5018296 = idf(docFreq=3622, maxDocs=44218)
0.052685954 = queryNorm
0.46428138 = fieldWeight in 58, product of:
1.4142135 = tf(freq=2.0), with freq of:
2.0 = termFreq=2.0
3.5018296 = idf(docFreq=3622, maxDocs=44218)
0.09375 = fieldNorm(doc=58)
0.5 = coord(1/2)
0.5 = coord(1/2)
- Date
- 14. 6.2015 22:12:44
-
Fuhr, N.: Rankingexperimente mit gewichteter Indexierung (1986)
0.02
0.021414658 = product of:
0.042829316 = sum of:
0.042829316 = product of:
0.08565863 = sum of:
0.08565863 = weight(_text_:22 in 2051) [ClassicSimilarity], result of:
0.08565863 = score(doc=2051,freq=2.0), product of:
0.18449724 = queryWeight, product of:
3.5018296 = idf(docFreq=3622, maxDocs=44218)
0.052685954 = queryNorm
0.46428138 = fieldWeight in 2051, product of:
1.4142135 = tf(freq=2.0), with freq of:
2.0 = termFreq=2.0
3.5018296 = idf(docFreq=3622, maxDocs=44218)
0.09375 = fieldNorm(doc=2051)
0.5 = coord(1/2)
0.5 = coord(1/2)
- Date
- 14. 6.2015 22:12:56
-
Ding, Y.: Topic-based PageRank on author cocitation networks (2011)
0.02
0.015715403 = product of:
0.031430807 = sum of:
0.031430807 = product of:
0.12572323 = sum of:
0.12572323 = weight(_text_:authors in 4348) [ClassicSimilarity], result of:
0.12572323 = score(doc=4348,freq=6.0), product of:
0.24018547 = queryWeight, product of:
4.558814 = idf(docFreq=1258, maxDocs=44218)
0.052685954 = queryNorm
0.52344227 = fieldWeight in 4348, product of:
2.4494898 = tf(freq=6.0), with freq of:
6.0 = termFreq=6.0
4.558814 = idf(docFreq=1258, maxDocs=44218)
0.046875 = fieldNorm(doc=4348)
0.25 = coord(1/4)
0.5 = coord(1/2)
- Abstract
- Ranking authors is vital for identifying a researcher's impact and standing within a scientific field. There are many different ranking methods (e.g., citations, publications, h-index, PageRank, and weighted PageRank), but most of them are topic-independent. This paper proposes topic-dependent ranks based on the combination of a topic model and a weighted PageRank algorithm. The author-conference-topic (ACT) model was used to extract topic distribution of individual authors. Two ways for combining the ACT model with the PageRank algorithm are proposed: simple combination (I_PR) or using a topic distribution as a weighted vector for PageRank (PR_t). Information retrieval was chosen as the test field and representative authors for different topics at different time phases were identified. Principal component analysis (PCA) was applied to analyze the ranking difference between I_PR and PR_t.
-
Langville, A.N.; Meyer, C.D.: Google's PageRank and beyond : the science of search engine rankings (2006)
0.01
0.014480194 = sum of:
0.009073292 = product of:
0.036293168 = sum of:
0.036293168 = weight(_text_:authors in 6) [ClassicSimilarity], result of:
0.036293168 = score(doc=6,freq=2.0), product of:
0.24018547 = queryWeight, product of:
4.558814 = idf(docFreq=1258, maxDocs=44218)
0.052685954 = queryNorm
0.15110476 = fieldWeight in 6, product of:
1.4142135 = tf(freq=2.0), with freq of:
2.0 = termFreq=2.0
4.558814 = idf(docFreq=1258, maxDocs=44218)
0.0234375 = fieldNorm(doc=6)
0.25 = coord(1/4)
0.0054069017 = product of:
0.010813803 = sum of:
0.010813803 = weight(_text_:m in 6) [ClassicSimilarity], result of:
0.010813803 = score(doc=6,freq=2.0), product of:
0.13110629 = queryWeight, product of:
2.4884486 = idf(docFreq=9980, maxDocs=44218)
0.052685954 = queryNorm
0.0824812 = fieldWeight in 6, product of:
1.4142135 = tf(freq=2.0), with freq of:
2.0 = termFreq=2.0
2.4884486 = idf(docFreq=9980, maxDocs=44218)
0.0234375 = fieldNorm(doc=6)
0.5 = coord(1/2)
- Abstract
- Why doesn't your home page appear on the first page of search results, even when you query your own name? How do other Web pages always appear at the top? What creates these powerful rankings? And how? The first book ever about the science of Web page rankings, "Google's PageRank and Beyond" supplies the answers to these and other questions and more. The book serves two very different audiences: the curious science reader and the technical computational reader. The chapters build in mathematical sophistication, so that the first five are accessible to the general academic reader. While other chapters are much more mathematical in nature, each one contains something for both audiences. For example, the authors include entertaining asides such as how search engines make money and how the Great Firewall of China influences research. The book includes an extensive background chapter designed to help readers learn more about the mathematics of search engines, and it contains several MATLAB codes and links to sample Web data sets. The philosophy throughout is to encourage readers to experiment with the ideas and algorithms in the text. Any business seriously interested in improving its rankings in the major search engines can benefit from the clear examples, sample code, and list of resources provided. It includes: many illustrative examples and entertaining asides; MATLAB code; accessible and informal style; and complete and self-contained section for mathematics review.
- Type
- m
-
Wechsler, M.; Schäuble, P.: ¬The probability ranking principle revisited (2000)
0.01
0.014418405 = product of:
0.02883681 = sum of:
0.02883681 = product of:
0.05767362 = sum of:
0.05767362 = weight(_text_:m in 3827) [ClassicSimilarity], result of:
0.05767362 = score(doc=3827,freq=2.0), product of:
0.13110629 = queryWeight, product of:
2.4884486 = idf(docFreq=9980, maxDocs=44218)
0.052685954 = queryNorm
0.4398997 = fieldWeight in 3827, product of:
1.4142135 = tf(freq=2.0), with freq of:
2.0 = termFreq=2.0
2.4884486 = idf(docFreq=9980, maxDocs=44218)
0.125 = fieldNorm(doc=3827)
0.5 = coord(1/2)
0.5 = coord(1/2)
-
Liddy, E.D.; Diamond, T.; McKenna, M.: DR-LINK in TIPSTER (2000)
0.01
0.014418405 = product of:
0.02883681 = sum of:
0.02883681 = product of:
0.05767362 = sum of:
0.05767362 = weight(_text_:m in 3907) [ClassicSimilarity], result of:
0.05767362 = score(doc=3907,freq=2.0), product of:
0.13110629 = queryWeight, product of:
2.4884486 = idf(docFreq=9980, maxDocs=44218)
0.052685954 = queryNorm
0.4398997 = fieldWeight in 3907, product of:
1.4142135 = tf(freq=2.0), with freq of:
2.0 = termFreq=2.0
2.4884486 = idf(docFreq=9980, maxDocs=44218)
0.125 = fieldNorm(doc=3907)
0.5 = coord(1/2)
0.5 = coord(1/2)
