-
Frakes, W.B.: Stemming algorithms (1992)
0.01
0.007933183 = product of:
0.015866365 = sum of:
0.015866365 = product of:
0.047599096 = sum of:
0.047599096 = weight(_text_:c in 3503) [ClassicSimilarity], result of:
0.047599096 = score(doc=3503,freq=2.0), product of:
0.15612034 = queryWeight, product of:
3.4494052 = idf(docFreq=3817, maxDocs=44218)
0.045260075 = queryNorm
0.3048872 = fieldWeight in 3503, product of:
1.4142135 = tf(freq=2.0), with freq of:
2.0 = termFreq=2.0
3.4494052 = idf(docFreq=3817, maxDocs=44218)
0.0625 = fieldNorm(doc=3503)
0.33333334 = coord(1/3)
0.5 = coord(1/2)
- Abstract
- Desribes stemming algorithms - programs that relate morphologically similar indexing and search terms. Stemming is used to improve retrieval effectiveness and to reduce the size of indexing files. Several approaches to stemming are describes - table lookup, affix removal, successor variety, and n-gram. empirical studies of stemming are summarized. The Porter stemmer is described in detail, and a full implementation in C is presented
-
Radev, D.; Fan, W.; Qu, H.; Wu, H.; Grewal, A.: Probabilistic question answering on the Web (2005)
0.00
0.004365113 = product of:
0.008730226 = sum of:
0.008730226 = product of:
0.026190678 = sum of:
0.026190678 = weight(_text_:h in 3455) [ClassicSimilarity], result of:
0.026190678 = score(doc=3455,freq=4.0), product of:
0.11244635 = queryWeight, product of:
2.4844491 = idf(docFreq=10020, maxDocs=44218)
0.045260075 = queryNorm
0.2329171 = fieldWeight in 3455, product of:
2.0 = tf(freq=4.0), with freq of:
4.0 = termFreq=4.0
2.4844491 = idf(docFreq=10020, maxDocs=44218)
0.046875 = fieldNorm(doc=3455)
0.33333334 = coord(1/3)
0.5 = coord(1/2)
-
Abu-Salem, H.; Al-Omari, M.; Evens, M.W.: Stemming methodologies over individual query words for an Arabic information retrieval system (1999)
0.00
0.0025721677 = product of:
0.0051443353 = sum of:
0.0051443353 = product of:
0.015433006 = sum of:
0.015433006 = weight(_text_:h in 3672) [ClassicSimilarity], result of:
0.015433006 = score(doc=3672,freq=2.0), product of:
0.11244635 = queryWeight, product of:
2.4844491 = idf(docFreq=10020, maxDocs=44218)
0.045260075 = queryNorm
0.13724773 = fieldWeight in 3672, product of:
1.4142135 = tf(freq=2.0), with freq of:
2.0 = termFreq=2.0
2.4844491 = idf(docFreq=10020, maxDocs=44218)
0.0390625 = fieldNorm(doc=3672)
0.33333334 = coord(1/3)
0.5 = coord(1/2)