Diffusion of Latent Semantic Analysis as a Research Tool:  A Social Network Analysis Approach   Yaşar Tonta H acettepe Uni...
<ul><li>Background </li></ul><ul><li>Research questions and hypotheses </li></ul><ul><li>Data sources and method </li></ul...
<ul><ul><li>Knowledge acquisition, induction and representation tool (Plato’s problem) </li></ul></ul><ul><ul><li>Fully au...
<ul><li>How fast did LSA as a research tool diffuse and become a part of the regular scientific discourse in different fie...
Data  Sources & Methods <ul><li>Searched W eb  o f  S cience   for  literature on LSA  (1990-2008) </li></ul><ul><li>65 pa...
<ul><ul><li>Findings </li></ul></ul>Symposium on Informetrics and Scientometrics Research, 2009 ASIS&T Annual Meeting ,  N...
#  of  papers   on   LSA and # of times cited Symposium on Informetrics and Scientometrics Research, 2009 ASIS&T Annual Me...
T hree  LSA papers ( citation classics )   Symposium on Informetrics and Scientometrics Research, 2009 ASIS&T Annual Meeti...
Symposium on Informetrics and Scientometrics Research, 2009 ASIS&T Annual Meeting ,  Nov . 6- 11, 2009, Vancouver, Canada....
Centrality measures for journals cited in papers with LSA in titles and topics Symposium on Informetrics and Scientometric...
The most prolific LSA researche r s Symposium on Informetrics and Scientometrics Research, 2009 ASIS&T Annual Meeting ,  N...
Network of  LSA  researchers  with specialties Symposium on Informetrics and Scientometrics Research, 2009 ASIS&T Annual M...
Network of journals cited in papers with  LSA in titles Symposium on Informetrics and Scientometrics Research, 2009 ASIS&T...
Network of journals cited in papers  with LSA in topics Symposium on Informetrics and Scientometrics Research, 2009 ASIS&T...
# of terms in cocited papers   with  LSA in   titles Symposium on Informetrics and Scientometrics Research, 2009 ASIS&T An...
Symposium on Informetrics and Scientometrics Research, 2009 ASIS&T Annual Meeting ,  Nov . 6- 11, 2009, Vancouver, Canada....
<ul><li>LSA is a multidisciplinary method </li></ul><ul><li>Data fits Lotka’s S quare  Law </li></ul><ul><li>M ost prolifi...
Diffusion of Latent Semantic Analysis as a Research Tool:  A Social Network Analysis Approach   Yaşar Tonta H acettepe Uni...
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Diffusion of Latent Semantic Analysis as a Research Tool: A Social Network Analysis Approach

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Latent Semantic Analysis (LSA) is a relatively new research tool with a wide range of applications in different
fields ranging from discourse analysis to cognitive science, from information retrieval to machine learning and
so on. In this paper, we chart the development and diffusion of LSA as a research tool using Social Network
Analysis (SNA) approach that reveals the social structure of a discipline in terms of collaboration among
scientists. Using Thomson Reuters’ Web of Science (WoS), we identified 65 papers with “Latent Semantic
Analysis” in their titles and 250 papers in their topics (but not in titles) between 1990 and 2008. We then
analyzed those papers using bibliometric and SNA techniques such as co-authorship and cluster analysis. It
appears that as the emphasis moves from the research tool (LSA) itself to its applications in different fields,
citations to papers with LSA in their titles tend to decrease. The productivity of authors fits Lotka’s Law while
the network of authors is quite loose. Networks of journals cited in papers with LSA in their titles and topics are
well connected.

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Diffusion of Latent Semantic Analysis as a Research Tool: A Social Network Analysis Approach

  1. 1. Diffusion of Latent Semantic Analysis as a Research Tool: A Social Network Analysis Approach Yaşar Tonta H acettepe University Department of Information Management [email_address] yunus.hacettepe.edu.tr/~tonta/ Symposium on Informetrics and Scientometrics Research, 2009 ASIS&T Annual Meeting , Nov . 6- 11, 2009, Vancouver, Canada. Hamid Darvish Çankaya University Department of Computer Engineering darvish @ cankaya . e du.tr academic.cankaya .edu.tr/~ darvish /
  2. 2. <ul><li>Background </li></ul><ul><li>Research questions and hypotheses </li></ul><ul><li>Data sources and method </li></ul><ul><li>Findings </li></ul><ul><li>Conclusion </li></ul>Outline Symposium on Informetrics and Scientometrics Research, 2009 ASIS&T Annual Meeting , Nov . 6- 11, 2009, Vancouver, Canada.
  3. 3. <ul><ul><li>Knowledge acquisition, induction and representation tool (Plato’s problem) </li></ul></ul><ul><ul><li>Fully automatic technique to extract meaning and infer relations among words in passages of discourse </li></ul></ul><ul><ul><li>Uses Singular Value Decomposition technique </li></ul></ul><ul><ul><li>Applications in information retrieval, cognitive science, knowledge acquisition, machine learning, intelligent tutoring systems, computational biology </li></ul></ul><ul><ul><li>Improves information retrieval (cf. Vector Space or Boolean models) </li></ul></ul>Latent Semantic Analysis (LSA) Symposium on Informetrics and Scientometrics Research, 2009 ASIS&T Annual Meeting , Nov . 6- 11, 2009, Vancouver, Canada.
  4. 4. <ul><li>How fast did LSA as a research tool diffuse and become a part of the regular scientific discourse in different fields? </li></ul><ul><li>As LSA becomes a more mainstream research tool, does the number of papers on LSA decrease ? </li></ul><ul><li>D o fewer papers with LSA in their titles get published while the number of papers with LSA in their topics increase ? </li></ul>Research Questions Symposium on Informetrics and Scientometrics Research, 2009 ASIS&T Annual Meeting , Nov . 6- 11, 2009, Vancouver, Canada.
  5. 5. Data Sources & Methods <ul><li>Searched W eb o f S cience for literature on LSA (1990-2008) </li></ul><ul><li>65 papers with “latent semantic analysis” in their titles ( only ) </li></ul><ul><li>250 papers with “latent semantic analysis” in their their topics (but not in their titles) </li></ul><ul><li>Bibliometric methods </li></ul><ul><ul><li>Lotka ’ s Square Law </li></ul></ul><ul><ul><li>Citation analysis </li></ul></ul><ul><ul><li>C o-authorship analys is </li></ul></ul><ul><li>Social Network Analysis </li></ul><ul><ul><li>Cluster analysis </li></ul></ul><ul><ul><li>Centrality measures </li></ul></ul><ul><ul><ul><li>Density </li></ul></ul></ul><ul><ul><ul><li>Betweenness </li></ul></ul></ul><ul><ul><ul><li>Closeness </li></ul></ul></ul>Symposium on Informetrics and Scientometrics Research, 2009 ASIS&T Annual Meeting , Nov . 6- 11, 2009, Vancouver, Canada.
  6. 6. <ul><ul><li>Findings </li></ul></ul>Symposium on Informetrics and Scientometrics Research, 2009 ASIS&T Annual Meeting , Nov . 6- 11, 2009, Vancouver, Canada.
  7. 7. # of papers on LSA and # of times cited Symposium on Informetrics and Scientometrics Research, 2009 ASIS&T Annual Meeting , Nov . 6- 11, 2009, Vancouver, Canada.
  8. 8. T hree LSA papers ( citation classics ) Symposium on Informetrics and Scientometrics Research, 2009 ASIS&T Annual Meeting , Nov . 6- 11, 2009, Vancouver, Canada.
  9. 9. Symposium on Informetrics and Scientometrics Research, 2009 ASIS&T Annual Meeting , Nov . 6- 11, 2009, Vancouver, Canada. Citations to seminal LSA papers
  10. 10. Centrality measures for journals cited in papers with LSA in titles and topics Symposium on Informetrics and Scientometrics Research, 2009 ASIS&T Annual Meeting , Nov . 6- 11, 2009, Vancouver, Canada. # of Journals Density Betweenness Closeness LSA in Title 275 0.31840 0.06155 0.71958 LSA in Topic 1,001 0.29466 0.02866 0.69763
  11. 11. The most prolific LSA researche r s Symposium on Informetrics and Scientometrics Research, 2009 ASIS&T Annual Meeting , Nov . 6- 11, 2009, Vancouver, Canada.
  12. 12. Network of LSA researchers with specialties Symposium on Informetrics and Scientometrics Research, 2009 ASIS&T Annual Meeting , Nov . 6- 11, 2009, Vancouver, Canada.
  13. 13. Network of journals cited in papers with LSA in titles Symposium on Informetrics and Scientometrics Research, 2009 ASIS&T Annual Meeting , Nov . 6- 11, 2009, Vancouver, Canada.
  14. 14. Network of journals cited in papers with LSA in topics Symposium on Informetrics and Scientometrics Research, 2009 ASIS&T Annual Meeting , Nov . 6- 11, 2009, Vancouver, Canada.
  15. 15. # of terms in cocited papers with LSA in titles Symposium on Informetrics and Scientometrics Research, 2009 ASIS&T Annual Meeting , Nov . 6- 11, 2009, Vancouver, Canada.
  16. 16. Symposium on Informetrics and Scientometrics Research, 2009 ASIS&T Annual Meeting , Nov . 6- 11, 2009, Vancouver, Canada. # of terms in cocited papers with LSA in topics
  17. 17. <ul><li>LSA is a multidisciplinary method </li></ul><ul><li>Data fits Lotka’s S quare Law </li></ul><ul><li>M ost prolific LSA researchers are Landauer, Kitsch, Foltz an d Laham. </li></ul><ul><li>The network of LSA reserachers is quite loose </li></ul><ul><li>The network of the journals citing LSA papers is quite dense </li></ul><ul><li>LSA is an indispensable part of the scientific discourse. </li></ul>Conclusion Symposium on Informetrics and Scientometrics Research, 2009 ASIS&T Annual Meeting , Nov . 6- 11, 2009, Vancouver, Canada.
  18. 18. Diffusion of Latent Semantic Analysis as a Research Tool: A Social Network Analysis Approach Yaşar Tonta H acettepe University Department of Information Management [email_address] yunus.hacettepe.edu.tr/~tonta/ Symposium on Informetrics and Scientometrics Research, 2009 ASIS&T Annual Meeting , Nov . 6- 11, 2009, Vancouver, Canada. Hamid Darvish Çankaya University Department of Computer Engineering darvish @ cankaya . e du.tr academic.cankaya .edu.tr/~ darvish /

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