Search (5392 results, page 2 of 270)

0.082741246 = product of:
  0.16548249 = sum of:
    0.16548249 = sum of:
      0.13050319 = weight(_text_:theory in 3100) [ClassicSimilarity], result of:
        0.13050319 = score(doc=3100,freq=14.0), product of:
          0.21471956 = queryWeight, product of:
            4.1583924 = idf(docFreq=1878, maxDocs=44218)
            0.05163523 = queryNorm
          0.6077844 = fieldWeight in 3100, product of:
            3.7416575 = tf(freq=14.0), with freq of:
              14.0 = termFreq=14.0
            4.1583924 = idf(docFreq=1878, maxDocs=44218)
            0.0390625 = fieldNorm(doc=3100)
      0.034979306 = weight(_text_:22 in 3100) [ClassicSimilarity], result of:
        0.034979306 = score(doc=3100,freq=2.0), product of:
          0.18081778 = queryWeight, product of:
            3.5018296 = idf(docFreq=3622, maxDocs=44218)
            0.05163523 = queryNorm
          0.19345059 = fieldWeight in 3100, 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=3100)
  0.5 = coord(1/2)

Abstract

This book is an essay on the epistemology of classifications. Its main purpose is not to provide an exposition of an actual mathematical theory of classifications, that is, a general theory which would be available to any kind of them: hierarchical or non-hierarchical, ordinary or fuzzy, overlapping or not overlapping, finite or infinite, and so on, establishing a basis for all possible divisions of the real world. For the moment, such a theory remains nothing but a dream. Instead, the authors are essentially put forward a number of key questions. Their aim is rather to reveal the "state of art" of this dynamic field and the philosophy one may eventually adopt to go further. To this end they present some advances made in the course of the last century, discuss a few tricky problems that remain to be solved, and show the avenues open to those who no longer wish to stay on the wrong track. Researchers and professionals interested in the epistemology and philosophy of science, library science, logic and set theory, order theory or cluster analysis will find this book a comprehensive, original and progressive introduction to the main questions in this field.

Content

Philosophical problemsInformation / data structures / Empirical clustering and classic hierarchies / Algebra of trees / Generalized classifications / Topology of generalized classifications / Metaclassification / For an axiomatic theory of classifications / Alternative theories and higher infinite / Postscript.

Date

8. 9.2016 22:04:09

0.082339235 = product of:
  0.16467847 = sum of:
    0.16467847 = sum of:
      0.13669503 = weight(_text_:theory in 2258) [ClassicSimilarity], result of:
        0.13669503 = score(doc=2258,freq=24.0), product of:
          0.21471956 = queryWeight, product of:
            4.1583924 = idf(docFreq=1878, maxDocs=44218)
            0.05163523 = queryNorm
          0.63662124 = fieldWeight in 2258, product of:
            4.8989797 = tf(freq=24.0), with freq of:
              24.0 = termFreq=24.0
            4.1583924 = idf(docFreq=1878, maxDocs=44218)
            0.03125 = fieldNorm(doc=2258)
      0.027983444 = weight(_text_:22 in 2258) [ClassicSimilarity], result of:
        0.027983444 = score(doc=2258,freq=2.0), product of:
          0.18081778 = queryWeight, product of:
            3.5018296 = idf(docFreq=3622, maxDocs=44218)
            0.05163523 = queryNorm
          0.15476047 = fieldWeight in 2258, product of:
            1.4142135 = tf(freq=2.0), with freq of:
              2.0 = termFreq=2.0
            3.5018296 = idf(docFreq=3622, maxDocs=44218)
            0.03125 = fieldNorm(doc=2258)
  0.5 = coord(1/2)

Abstract

This book brings together contemporary facet theory research to propose mapping sentences as a new way of understanding complex behavior, and suggests future directions the approach may take. How do we think about the worlds we live in? The formation of categories of events and objects seems to be a fundamental orientation procedure. Facet theory and its main tool, the mapping sentence, deal with categories of behavior and experience, their interrelationship, and their unification as our worldviews. In this book Hackett reviews philosophical writing along with neuroscientific research and information form other disciplines to provide a context for facet theory and the qualitative developments in this approach. With a variety of examples, the author proposes mapping sentences as a new way of understanding and defining complex behavior.

Content

1 Introduction; 2 Ontological Categorisation and Mereology; Human assessment; Categories and the properties of experiential events; Mathematical, computing, artificial intelligence and library classification approaches; Sociological approaches; Psychological approaches; Personal Construct Theory; Philosophical approaches to categories; Mereology: facet theory and relationships between categories; Neuroscience and categories; Conclusions; 3 Facet Theory and Thinking about Human Behaviour Generating knowledge in facet theory: a brief overviewWhat is facet theory?; Facets and facet elements; The mapping sentence; Designing a mapping sentence; Narrative; Roles that facets play; Single-facet structures: axial role and modular role; Polar role; Circumplex; Two-facet structures; Radex; Three-facet structures; Cylindrex; Analysing facet theory research; Conclusions; 4 Evolving Facet Theory Applications; The evolution of facet theory; Mapping a domain: the mapping sentence as a stand-alone approach and integrative tool; Making and understanding fine art; Defining the grid: a mapping sentence for grid imagesFacet sort-technique; Facet mapping therapy: using the mapping sentence and the facet structures to explore client issues; Research program coordination; Conclusions and Future Directions; Glossary of Terms; Bibliography; Index

Date

17.10.2015 17:22:01

0.08201044 = product of:
  0.16402088 = sum of:
    0.16402088 = product of:
      0.49206263 = sum of:
        0.49206263 = weight(_text_:3a in 973) [ClassicSimilarity], result of:
          0.49206263 = score(doc=973,freq=2.0), product of:
            0.43776408 = queryWeight, product of:
              8.478011 = idf(docFreq=24, maxDocs=44218)
              0.05163523 = queryNorm
            1.1240361 = fieldWeight in 973, product of:
              1.4142135 = tf(freq=2.0), with freq of:
                2.0 = termFreq=2.0
              8.478011 = idf(docFreq=24, maxDocs=44218)
              0.09375 = fieldNorm(doc=973)
      0.33333334 = coord(1/3)
  0.5 = coord(1/2)

Content

Vgl.: http%3A%2F%2Fcreativechoice.org%2Fdoc%2FHansJonas.pdf&usg=AOvVaw1TM3teaYKgABL5H9yoIifA&opi=89978449.

0.08017827 = product of:
  0.16035654 = sum of:
    0.16035654 = sum of:
      0.118381366 = weight(_text_:theory in 666) [ClassicSimilarity], result of:
        0.118381366 = score(doc=666,freq=8.0), product of:
          0.21471956 = queryWeight, product of:
            4.1583924 = idf(docFreq=1878, maxDocs=44218)
            0.05163523 = queryNorm
          0.55133015 = fieldWeight in 666, product of:
            2.828427 = tf(freq=8.0), with freq of:
              8.0 = termFreq=8.0
            4.1583924 = idf(docFreq=1878, maxDocs=44218)
            0.046875 = fieldNorm(doc=666)
      0.041975167 = weight(_text_:22 in 666) [ClassicSimilarity], result of:
        0.041975167 = score(doc=666,freq=2.0), product of:
          0.18081778 = queryWeight, product of:
            3.5018296 = idf(docFreq=3622, maxDocs=44218)
            0.05163523 = queryNorm
          0.23214069 = fieldWeight in 666, 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=666)
  0.5 = coord(1/2)

Abstract

The proliferation of digital knowledge repositories (DKRs) used for distributed and collocated work raises important questions about how to manage these technologies. This study investigates why individuals contribute information to DKRs by applying and extending transactive memory theory. Data from knowledge workers (N = 208) nested in work groups (J = 17) located in Europe and the United States revealed, consistent with transactive memory theory, that perceptions of experts' retrieval of information were positively related to the likelihood of information provision to DKRs. The relationship between experts' perceptions of retrieval and information provision varied from group to group, and cross-level interactions indicated that trust in how the information would be used and the interdependence of tasks within groups could explain that variation. Furthermore, information provision to DKRs was related to communication networks in ways consistent with theorizing regarding the formation of transactive memory systems. Implications for theory and practice are discussed, emphasizing the utility of multilevel approaches for conceptualizing and modeling why individuals provide information to DKRs.

Date

22. 3.2013 19:39:00

0.07903503 = product of:
  0.15807006 = sum of:
    0.15807006 = sum of:
      0.078920916 = weight(_text_:theory in 2943) [ClassicSimilarity], result of:
        0.078920916 = score(doc=2943,freq=2.0), product of:
          0.21471956 = queryWeight, product of:
            4.1583924 = idf(docFreq=1878, maxDocs=44218)
            0.05163523 = queryNorm
          0.36755344 = fieldWeight in 2943, product of:
            1.4142135 = tf(freq=2.0), with freq of:
              2.0 = termFreq=2.0
            4.1583924 = idf(docFreq=1878, maxDocs=44218)
            0.0625 = fieldNorm(doc=2943)
      0.079149134 = weight(_text_:22 in 2943) [ClassicSimilarity], result of:
        0.079149134 = score(doc=2943,freq=4.0), product of:
          0.18081778 = queryWeight, product of:
            3.5018296 = idf(docFreq=3622, maxDocs=44218)
            0.05163523 = queryNorm
          0.4377287 = fieldWeight in 2943, product of:
            2.0 = tf(freq=4.0), with freq of:
              4.0 = termFreq=4.0
            3.5018296 = idf(docFreq=3622, maxDocs=44218)
            0.0625 = fieldNorm(doc=2943)
  0.5 = coord(1/2)

Abstract

Describes the developments of the Statistical System for Subject Designation (SSSD): a syntactical system for subject designation for libraries in Croatia, based on the construction of subject headings in agreement with the theory of the sentence nature of subject headings. The discussion is preceded by a brief summary of theories underlying basic principles and fundamental rules of the alphabetical subject catalogue

Date

31. 7.2006 14:22:21

Source

Cataloging and classification quarterly. 22(1996) no.1, S.77-93

0.07790089 = product of:
  0.15580177 = sum of:
    0.15580177 = sum of:
      0.120822474 = weight(_text_:theory in 1086) [ClassicSimilarity], result of:
        0.120822474 = score(doc=1086,freq=12.0), product of:
          0.21471956 = queryWeight, product of:
            4.1583924 = idf(docFreq=1878, maxDocs=44218)
            0.05163523 = queryNorm
          0.56269896 = fieldWeight in 1086, product of:
            3.4641016 = tf(freq=12.0), with freq of:
              12.0 = termFreq=12.0
            4.1583924 = idf(docFreq=1878, maxDocs=44218)
            0.0390625 = fieldNorm(doc=1086)
      0.034979306 = weight(_text_:22 in 1086) [ClassicSimilarity], result of:
        0.034979306 = score(doc=1086,freq=2.0), product of:
          0.18081778 = queryWeight, product of:
            3.5018296 = idf(docFreq=3622, maxDocs=44218)
            0.05163523 = queryNorm
          0.19345059 = fieldWeight in 1086, 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=1086)
  0.5 = coord(1/2)

Abstract

We sketch the historic transformation of culturally grown techniques of symbol manipulation, such as basic arithmetic in the decimal number system, to the full-fledges version of the Computational Theory of Mind. Symbol manipulation systems had been considered by Leibniz as a methodology of inferring knowledge in a secure and purely mechanical fashion. Such 'inference calculi' were considered as mer artefacts which could not possibly encompass als human knowldge acquisition. In Alan Turing's work one notices a crucial shift of perspective. The abstract mathematical states of a Turing machine (a kind of 'calculus universalis' that Leibniz was looking for) are claimed to correspond th equivalent psychological states. Artefacts are turned into faithful models of human cognition. A further step toward the Computational Theory of Mind was the physical symbol system hypothesis, contending to have found a necessary and sifficient criterion for the presence of 'intelligence' in operative mediums. This, together with Chomsky's foundational work on linguistics, led naturally to the Computational Theory of Mind as set out by Jerry Fodor and Zenon Pylshyn. We discuss problematic aspects of this theory. Then we deal with another paradigm of the Computational Theory of Mind based on network automata. This sub-symbolic paradigm seems to avoid problems occuring in symbolic computations, like the proble 'frame problem' and 'graceful degradation'

Source

Knowledge organization. 22(1995) no.1, S.10-17

0.07331534 = product of:
  0.14663067 = sum of:
    0.14663067 = sum of:
      0.09765965 = weight(_text_:theory in 2509) [ClassicSimilarity], result of:
        0.09765965 = score(doc=2509,freq=4.0), product of:
          0.21471956 = queryWeight, product of:
            4.1583924 = idf(docFreq=1878, maxDocs=44218)
            0.05163523 = queryNorm
          0.45482418 = fieldWeight in 2509, product of:
            2.0 = tf(freq=4.0), with freq of:
              4.0 = termFreq=4.0
            4.1583924 = idf(docFreq=1878, maxDocs=44218)
            0.0546875 = fieldNorm(doc=2509)
      0.048971027 = weight(_text_:22 in 2509) [ClassicSimilarity], result of:
        0.048971027 = score(doc=2509,freq=2.0), product of:
          0.18081778 = queryWeight, product of:
            3.5018296 = idf(docFreq=3622, maxDocs=44218)
            0.05163523 = queryNorm
          0.2708308 = 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)
            0.0546875 = fieldNorm(doc=2509)
  0.5 = coord(1/2)

Abstract

Edited version of a report to the Australian Library and Information Association on the Conference on classification theory in the computer age, Albany, New York, 18-19 Nov 88, and on the meeting of the Dewey Editorial Policy Committee which preceded it. The focus of the Editorial Policy Committee Meeting lay in the following areas: browsing; potential for improved subject access; system design; potential conflict between shelf location and information retrieval; and users. At the Conference on classification theory in the computer age the following papers were presented: Applications of artificial intelligence to bibliographic classification, by Irene Travis; Automation and classification, By Elaine Svenonious; Subject classification and language processing for retrieval in large data bases, by Diana Scott; Implications for information processing, by Carol Mandel; and implications for information science education, by Richard Halsey.

Date

8.11.1995 11:52:22

0.07331534 = product of:
  0.14663067 = sum of:
    0.14663067 = sum of:
      0.09765965 = weight(_text_:theory in 3030) [ClassicSimilarity], result of:
        0.09765965 = score(doc=3030,freq=4.0), product of:
          0.21471956 = queryWeight, product of:
            4.1583924 = idf(docFreq=1878, maxDocs=44218)
            0.05163523 = queryNorm
          0.45482418 = fieldWeight in 3030, product of:
            2.0 = tf(freq=4.0), with freq of:
              4.0 = termFreq=4.0
            4.1583924 = idf(docFreq=1878, maxDocs=44218)
            0.0546875 = fieldNorm(doc=3030)
      0.048971027 = weight(_text_:22 in 3030) [ClassicSimilarity], result of:
        0.048971027 = score(doc=3030,freq=2.0), product of:
          0.18081778 = queryWeight, product of:
            3.5018296 = idf(docFreq=3622, maxDocs=44218)
            0.05163523 = queryNorm
          0.2708308 = fieldWeight in 3030, product of:
            1.4142135 = tf(freq=2.0), with freq of:
              2.0 = termFreq=2.0
            3.5018296 = idf(docFreq=3622, maxDocs=44218)
            0.0546875 = fieldNorm(doc=3030)
  0.5 = coord(1/2)

Abstract

The theory of diffusion can be successfully applied to scientific information dissemination by identifying space with a series of successive authors, and potential (temperature) with the interest of new authors towards earlier published papers, measured by the number of citations. As the total number of citation equals the number of references, the conservation law is fulfilled and Fourier's parabolic differential equation can be applied

Date

22. 2.1999 16:16:11

Footnote

Übers. des Titels: Scientific information diffusion theory

0.06975689 = product of:
  0.13951378 = sum of:
    0.13951378 = product of:
      0.27902755 = sum of:
        0.27902755 = weight(_text_:theory in 2721) [ClassicSimilarity], result of:
          0.27902755 = score(doc=2721,freq=4.0), product of:
            0.21471956 = queryWeight, product of:
              4.1583924 = idf(docFreq=1878, maxDocs=44218)
              0.05163523 = queryNorm
            1.2994976 = fieldWeight in 2721, product of:
              2.0 = tf(freq=4.0), with freq of:
                4.0 = termFreq=4.0
              4.1583924 = idf(docFreq=1878, maxDocs=44218)
              0.15625 = fieldNorm(doc=2721)
      0.5 = coord(1/2)
  0.5 = coord(1/2)

Classification

003.5 / Theory of communication and control

DDC

003.5 / Theory of communication and control

0.06925549 = product of:
  0.13851099 = sum of:
    0.13851099 = product of:
      0.27702197 = sum of:
        0.27702197 = weight(_text_:22 in 219) [ClassicSimilarity], result of:
          0.27702197 = score(doc=219,freq=4.0), product of:
            0.18081778 = queryWeight, product of:
              3.5018296 = idf(docFreq=3622, maxDocs=44218)
              0.05163523 = queryNorm
            1.5320505 = fieldWeight in 219, product of:
              2.0 = tf(freq=4.0), with freq of:
                4.0 = termFreq=4.0
              3.5018296 = idf(docFreq=3622, maxDocs=44218)
              0.21875 = fieldNorm(doc=219)
      0.5 = coord(1/2)
  0.5 = coord(1/2)

Date

22. 5.1998 20:02:22

0.06925549 = product of:
  0.13851099 = sum of:
    0.13851099 = product of:
      0.27702197 = sum of:
        0.27702197 = weight(_text_:22 in 1386) [ClassicSimilarity], result of:
          0.27702197 = score(doc=1386,freq=4.0), product of:
            0.18081778 = queryWeight, product of:
              3.5018296 = idf(docFreq=3622, maxDocs=44218)
              0.05163523 = queryNorm
            1.5320505 = fieldWeight in 1386, product of:
              2.0 = tf(freq=4.0), with freq of:
                4.0 = termFreq=4.0
              3.5018296 = idf(docFreq=3622, maxDocs=44218)
              0.21875 = fieldNorm(doc=1386)
      0.5 = coord(1/2)
  0.5 = coord(1/2)

Date

22. 5.1998 20:02:22

0.06925549 = product of:
  0.13851099 = sum of:
    0.13851099 = product of:
      0.27702197 = sum of:
        0.27702197 = weight(_text_:22 in 2102) [ClassicSimilarity], result of:
          0.27702197 = score(doc=2102,freq=4.0), product of:
            0.18081778 = queryWeight, product of:
              3.5018296 = idf(docFreq=3622, maxDocs=44218)
              0.05163523 = queryNorm
            1.5320505 = fieldWeight in 2102, product of:
              2.0 = tf(freq=4.0), with freq of:
                4.0 = termFreq=4.0
              3.5018296 = idf(docFreq=3622, maxDocs=44218)
              0.21875 = fieldNorm(doc=2102)
      0.5 = coord(1/2)
  0.5 = coord(1/2)

Date

22. 5.1998 20:02:22

0.06834751 = product of:
  0.13669503 = sum of:
    0.13669503 = product of:
      0.27339005 = sum of:
        0.27339005 = weight(_text_:theory in 2472) [ClassicSimilarity], result of:
          0.27339005 = score(doc=2472,freq=6.0), product of:
            0.21471956 = queryWeight, product of:
              4.1583924 = idf(docFreq=1878, maxDocs=44218)
              0.05163523 = queryNorm
            1.2732425 = fieldWeight in 2472, product of:
              2.4494898 = tf(freq=6.0), with freq of:
                6.0 = termFreq=6.0
              4.1583924 = idf(docFreq=1878, maxDocs=44218)
              0.125 = fieldNorm(doc=2472)
      0.5 = coord(1/2)
  0.5 = coord(1/2)

Source

IEEE transactions on information theory IT. 14(1968) no.5, S.662-664

0.06834204 = product of:
  0.13668407 = sum of:
    0.13668407 = product of:
      0.4100522 = sum of:
        0.4100522 = weight(_text_:3a in 1826) [ClassicSimilarity], result of:
          0.4100522 = score(doc=1826,freq=2.0), product of:
            0.43776408 = queryWeight, product of:
              8.478011 = idf(docFreq=24, maxDocs=44218)
              0.05163523 = queryNorm
            0.93669677 = fieldWeight in 1826, product of:
              1.4142135 = tf(freq=2.0), with freq of:
                2.0 = termFreq=2.0
              8.478011 = idf(docFreq=24, maxDocs=44218)
              0.078125 = fieldNorm(doc=1826)
      0.33333334 = coord(1/3)
  0.5 = coord(1/2)

Source

http://www.google.de/url?sa=t&rct=j&q=&esrc=s&source=web&cd=5&ved=0CDQQFjAE&url=http%3A%2F%2Fdigbib.ubka.uni-karlsruhe.de%2Fvolltexte%2Fdocuments%2F3131107&ei=HzFWVYvGMsiNsgGTyoFI&usg=AFQjCNE2FHUeR9oQTQlNC4TPedv4Mo3DaQ&sig2=Rlzpr7a3BLZZkqZCXXN_IA&bvm=bv.93564037,d.bGg&cad=rja

0.0674439 = product of:
  0.1348878 = sum of:
    0.1348878 = sum of:
      0.078920916 = weight(_text_:theory in 6740) [ClassicSimilarity], result of:
        0.078920916 = score(doc=6740,freq=2.0), product of:
          0.21471956 = queryWeight, product of:
            4.1583924 = idf(docFreq=1878, maxDocs=44218)
            0.05163523 = queryNorm
          0.36755344 = fieldWeight in 6740, product of:
            1.4142135 = tf(freq=2.0), with freq of:
              2.0 = termFreq=2.0
            4.1583924 = idf(docFreq=1878, maxDocs=44218)
            0.0625 = fieldNorm(doc=6740)
      0.055966888 = weight(_text_:22 in 6740) [ClassicSimilarity], result of:
        0.055966888 = score(doc=6740,freq=2.0), product of:
          0.18081778 = queryWeight, product of:
            3.5018296 = idf(docFreq=3622, maxDocs=44218)
            0.05163523 = queryNorm
          0.30952093 = fieldWeight in 6740, 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=6740)
  0.5 = coord(1/2)

Source

International cataloguing and bibliographic control. 22(1993) no.3, S.46-50

0.0674439 = product of:
  0.1348878 = sum of:
    0.1348878 = sum of:
      0.078920916 = weight(_text_:theory in 771) [ClassicSimilarity], result of:
        0.078920916 = score(doc=771,freq=2.0), product of:
          0.21471956 = queryWeight, product of:
            4.1583924 = idf(docFreq=1878, maxDocs=44218)
            0.05163523 = queryNorm
          0.36755344 = fieldWeight in 771, product of:
            1.4142135 = tf(freq=2.0), with freq of:
              2.0 = termFreq=2.0
            4.1583924 = idf(docFreq=1878, maxDocs=44218)
            0.0625 = fieldNorm(doc=771)
      0.055966888 = weight(_text_:22 in 771) [ClassicSimilarity], result of:
        0.055966888 = score(doc=771,freq=2.0), product of:
          0.18081778 = queryWeight, product of:
            3.5018296 = idf(docFreq=3622, maxDocs=44218)
            0.05163523 = queryNorm
          0.30952093 = fieldWeight in 771, 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=771)
  0.5 = coord(1/2)

Content

Enthält folgende 9 Kapitel: The literal and the metaphoric; Views of metaphor; Knowledge representation; Representation schemes and conceptual graphs; The dynamic type hierarchy theory of metaphor; Computational approaches to metaphor; Thenature and structure of semantic hierarchies; Language games, open texture and family resemblance; Programming the dynamic type hierarchy; Subject index

Footnote

Bereits 1991 bei Kluwer publiziert // Rez. in: Knowledge organization 22(1995) no.1, S.48-49 (O. Sechser)

0.0674439 = product of:
  0.1348878 = sum of:
    0.1348878 = sum of:
      0.078920916 = weight(_text_:theory in 4441) [ClassicSimilarity], result of:
        0.078920916 = score(doc=4441,freq=2.0), product of:
          0.21471956 = queryWeight, product of:
            4.1583924 = idf(docFreq=1878, maxDocs=44218)
            0.05163523 = queryNorm
          0.36755344 = fieldWeight in 4441, product of:
            1.4142135 = tf(freq=2.0), with freq of:
              2.0 = termFreq=2.0
            4.1583924 = idf(docFreq=1878, maxDocs=44218)
            0.0625 = fieldNorm(doc=4441)
      0.055966888 = weight(_text_:22 in 4441) [ClassicSimilarity], result of:
        0.055966888 = score(doc=4441,freq=2.0), product of:
          0.18081778 = queryWeight, product of:
            3.5018296 = idf(docFreq=3622, maxDocs=44218)
            0.05163523 = queryNorm
          0.30952093 = fieldWeight in 4441, 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=4441)
  0.5 = coord(1/2)

Abstract

Much of the existing information seeking literature only considers information seeking when performed by an individual information seeker. This paper describes a study that explicitly considers information seeking from a collaborative perspective. The study used a grounded theory approach of a complex, real world, example of collaborative information seeking activity, drawn from the military domain.

Date

6.11.2005 19:08:22

0.0674439 = product of:
  0.1348878 = sum of:
    0.1348878 = sum of:
      0.078920916 = weight(_text_:theory in 5830) [ClassicSimilarity], result of:
        0.078920916 = score(doc=5830,freq=2.0), product of:
          0.21471956 = queryWeight, product of:
            4.1583924 = idf(docFreq=1878, maxDocs=44218)
            0.05163523 = queryNorm
          0.36755344 = fieldWeight in 5830, product of:
            1.4142135 = tf(freq=2.0), with freq of:
              2.0 = termFreq=2.0
            4.1583924 = idf(docFreq=1878, maxDocs=44218)
            0.0625 = fieldNorm(doc=5830)
      0.055966888 = weight(_text_:22 in 5830) [ClassicSimilarity], result of:
        0.055966888 = score(doc=5830,freq=2.0), product of:
          0.18081778 = queryWeight, product of:
            3.5018296 = idf(docFreq=3622, maxDocs=44218)
            0.05163523 = queryNorm
          0.30952093 = fieldWeight in 5830, 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=5830)
  0.5 = coord(1/2)

Date

5. 8.2006 13:22:08

0.06284172 = product of:
  0.12568344 = sum of:
    0.12568344 = sum of:
      0.08370827 = weight(_text_:theory in 5258) [ClassicSimilarity], result of:
        0.08370827 = score(doc=5258,freq=4.0), product of:
          0.21471956 = queryWeight, product of:
            4.1583924 = idf(docFreq=1878, maxDocs=44218)
            0.05163523 = queryNorm
          0.3898493 = fieldWeight in 5258, product of:
            2.0 = tf(freq=4.0), with freq of:
              4.0 = termFreq=4.0
            4.1583924 = idf(docFreq=1878, maxDocs=44218)
            0.046875 = fieldNorm(doc=5258)
      0.041975167 = weight(_text_:22 in 5258) [ClassicSimilarity], result of:
        0.041975167 = score(doc=5258,freq=2.0), product of:
          0.18081778 = queryWeight, product of:
            3.5018296 = idf(docFreq=3622, maxDocs=44218)
            0.05163523 = queryNorm
          0.23214069 = fieldWeight in 5258, 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=5258)
  0.5 = coord(1/2)

Abstract

Subgraph isomorphism and maximum common subgraph isomorphism algorithms from graph theory provide an effective and an efficient way of identifying structural relationships between biological macromolecules. They thus provide a natural complement to the pattern matching algorithms that are used in bioinformatics to identify sequence relationships. Examples are provided of the use of graph theory to analyze proteins for which three-dimensional crystallographic or NMR structures are available, focusing on the use of the Bron-Kerbosch clique detection algorithm to identify common folding motifs and of the Ullmann subgraph isomorphism algorithm to identify patterns of amino acid residues. Our methods are also applicable to other types of biological macromolecule, such as carbohydrate and nucleic acid structures.

Date

22. 7.2006 14:40:10

0.06284172 = product of:
  0.12568344 = sum of:
    0.12568344 = sum of:
      0.08370827 = weight(_text_:theory in 54) [ClassicSimilarity], result of:
        0.08370827 = score(doc=54,freq=4.0), product of:
          0.21471956 = queryWeight, product of:
            4.1583924 = idf(docFreq=1878, maxDocs=44218)
            0.05163523 = queryNorm
          0.3898493 = fieldWeight in 54, product of:
            2.0 = tf(freq=4.0), with freq of:
              4.0 = termFreq=4.0
            4.1583924 = idf(docFreq=1878, maxDocs=44218)
            0.046875 = fieldNorm(doc=54)
      0.041975167 = weight(_text_:22 in 54) [ClassicSimilarity], result of:
        0.041975167 = score(doc=54,freq=2.0), product of:
          0.18081778 = queryWeight, product of:
            3.5018296 = idf(docFreq=3622, maxDocs=44218)
            0.05163523 = queryNorm
          0.23214069 = fieldWeight in 54, 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=54)
  0.5 = coord(1/2)

Abstract

Extensive literatures exist on information searching theory and techniques, as well as on the Bradford Distribution. This distribution, also known as "Bradford's Law of Scattering," tells us that information on a subject is dispersed in a characteristic and robust pattern that appears consistently across many different environments. This pattern may be expected to have important implications for information searching theory and techniques. Yet these two research literatures are rarely considered in relation to each other. It is the purpose of this article to distinguish three Bradford regions and speculate on the optimum searching techniques for each region. In the process, browsing, directed searching in databases, and the pursuit of various forms of links will all be considered. Implications of growth in size of a literature for optimal information organization and searching will also be addressed.

Date

22. 2.2007 18:56:23