-
Vaughan, L.; Chen, Y.: Data mining from web search queries : a comparison of Google trends and Baidu index (2015)
0.01
0.0072925696 = product of:
0.014585139 = sum of:
0.014585139 = product of:
0.029170278 = sum of:
0.029170278 = weight(_text_:22 in 1605) [ClassicSimilarity], result of:
0.029170278 = score(doc=1605,freq=2.0), product of:
0.1507893 = queryWeight, product of:
3.5018296 = idf(docFreq=3622, maxDocs=44218)
0.04306015 = queryNorm
0.19345059 = fieldWeight in 1605, 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=1605)
0.5 = coord(1/2)
0.5 = coord(1/2)
- Source
- Journal of the Association for Information Science and Technology. 66(2015) no.1, S.13-22
-
Liu, Y.; Shi, J.; Chen, Y.: Patient-centered and experience-aware mining for effective adverse drug reaction discovery in online health forums (2018)
0.01
0.007205133 = product of:
0.014410266 = sum of:
0.014410266 = product of:
0.028820531 = sum of:
0.028820531 = weight(_text_:j in 4114) [ClassicSimilarity], result of:
0.028820531 = score(doc=4114,freq=2.0), product of:
0.13682348 = queryWeight, product of:
3.1774964 = idf(docFreq=5010, maxDocs=44218)
0.04306015 = queryNorm
0.21064025 = fieldWeight in 4114, product of:
1.4142135 = tf(freq=2.0), with freq of:
2.0 = termFreq=2.0
3.1774964 = idf(docFreq=5010, maxDocs=44218)
0.046875 = fieldNorm(doc=4114)
0.5 = coord(1/2)
0.5 = coord(1/2)
-
Zhang, J.; Chen, Y.; Zhao, Y.; Wolfram, D.; Ma, F.: Public health and social media : a study of Zika virus-related posts on Yahoo! Answers (2020)
0.01
0.006004277 = product of:
0.012008554 = sum of:
0.012008554 = product of:
0.024017109 = sum of:
0.024017109 = weight(_text_:j in 5672) [ClassicSimilarity], result of:
0.024017109 = score(doc=5672,freq=2.0), product of:
0.13682348 = queryWeight, product of:
3.1774964 = idf(docFreq=5010, maxDocs=44218)
0.04306015 = queryNorm
0.17553353 = fieldWeight in 5672, product of:
1.4142135 = tf(freq=2.0), with freq of:
2.0 = termFreq=2.0
3.1774964 = idf(docFreq=5010, maxDocs=44218)
0.0390625 = fieldNorm(doc=5672)
0.5 = coord(1/2)
0.5 = coord(1/2)