Srinivasan, P.: Optimal document-indexing vocabulary for MEDLINE (1996)
0.02
0.020983277 = product of:
0.06294983 = sum of:
0.06294983 = product of:
0.12589966 = sum of:
0.12589966 = weight(_text_:indexing in 6634) [ClassicSimilarity], result of:
0.12589966 = score(doc=6634,freq=10.0), product of:
0.19018644 = queryWeight, product of:
3.8278677 = idf(docFreq=2614, maxDocs=44218)
0.049684696 = queryNorm
0.6619802 = fieldWeight in 6634, product of:
3.1622777 = tf(freq=10.0), with freq of:
10.0 = termFreq=10.0
3.8278677 = idf(docFreq=2614, maxDocs=44218)
0.0546875 = fieldNorm(doc=6634)
0.5 = coord(1/2)
0.33333334 = coord(1/3)
- Abstract
- The indexing vocabulary is an important determinant of success in text retrieval. Researchers have compared the effectiveness of indexing using free text and controlled vocabularies in a variety of text contexts. A number of studies have investigated the relative merits of free-text, MeSH and UMLS metathesaurus indexing vocabularies for MEDLINE document indexing. Controlled vocabularies offer no advantages in retrieval performance over free text. Offers a detailed analysis of prior results and their underlying experimental designs. Offers results from a new experiment assessing 8 different retrieval strategies. Results indicate that MeSH does have an important role in text retrieval
