Yi, K.; Chan, L.M.: ¬A visualization software tool for Library of Congress Subject Headings (2008)
0.01
0.0068732076 = product of:
0.02749283 = sum of:
0.02749283 = weight(_text_:retrieval in 2503) [ClassicSimilarity], result of:
0.02749283 = score(doc=2503,freq=2.0), product of:
0.13710396 = queryWeight, product of:
3.024915 = idf(docFreq=5836, maxDocs=44218)
0.045324896 = queryNorm
0.20052543 = fieldWeight in 2503, product of:
1.4142135 = tf(freq=2.0), with freq of:
2.0 = termFreq=2.0
3.024915 = idf(docFreq=5836, maxDocs=44218)
0.046875 = fieldNorm(doc=2503)
0.25 = coord(1/4)
- Content
- The aim of this study is to develop a software tool, VisuaLCSH, for effective searching, browsing, and maintenance of LCSH. This tool enables visualizing subject headings and hierarchical structures implied and embedded in LCSH. A conceptual framework for converting the hierarchical structure of headings in LCSH to an explicit tree structure is proposed, described, and implemented. The highlights of VisuaLCSH are summarized below: 1) revealing multiple aspects of a heading; 2) normalizing the hierarchical relationships in LCSH; 3) showing multi-level hierarchies in LCSH sub-trees; 4) improving the navigational function of LCSH in retrieval; and 5) enabling the implementation of generic search, i.e., the 'exploding' feature, in searching LCSH.