-
Pozzi de Sousa, B.; Ortega, C.D.: Aspects regarding the notion of subject in the context of different theoretical trends : teaching approaches in Brazil (2018)
0.00
0.0026268435 = product of:
0.013134217 = sum of:
0.013134217 = product of:
0.03940265 = sum of:
0.03940265 = weight(_text_:f in 4707) [ClassicSimilarity], result of:
0.03940265 = score(doc=4707,freq=2.0), product of:
0.11184496 = queryWeight, product of:
3.985786 = idf(docFreq=2232, maxDocs=44218)
0.028060954 = queryNorm
0.35229704 = fieldWeight in 4707, product of:
1.4142135 = tf(freq=2.0), with freq of:
2.0 = termFreq=2.0
3.985786 = idf(docFreq=2232, maxDocs=44218)
0.0625 = fieldNorm(doc=4707)
0.33333334 = coord(1/3)
0.2 = coord(1/5)
- Source
- Challenges and opportunities for knowledge organization in the digital age: proceedings of the Fifteenth International ISKO Conference, 9-11 July 2018, Porto, Portugal / organized by: International Society for Knowledge Organization (ISKO), ISKO Spain and Portugal Chapter, University of Porto - Faculty of Arts and Humanities, Research Centre in Communication, Information and Digital Culture (CIC.digital) - Porto. Eds.: F. Ribeiro u. M.E. Cerveira
-
Saif, H.; He, Y.; Fernandez, M.; Alani, H.: Contextual semantics for sentiment analysis of Twitter (2016)
0.00
0.0023218233 = product of:
0.011609117 = sum of:
0.011609117 = product of:
0.034827348 = sum of:
0.034827348 = weight(_text_:f in 2667) [ClassicSimilarity], result of:
0.034827348 = score(doc=2667,freq=4.0), product of:
0.11184496 = queryWeight, product of:
3.985786 = idf(docFreq=2232, maxDocs=44218)
0.028060954 = queryNorm
0.31138954 = fieldWeight in 2667, product of:
2.0 = tf(freq=4.0), with freq of:
4.0 = termFreq=4.0
3.985786 = idf(docFreq=2232, maxDocs=44218)
0.0390625 = fieldNorm(doc=2667)
0.33333334 = coord(1/3)
0.2 = coord(1/5)
- Abstract
- Sentiment analysis on Twitter has attracted much attention recently due to its wide applications in both, commercial and public sectors. In this paper we present SentiCircles, a lexicon-based approach for sentiment analysis on Twitter. Different from typical lexicon-based approaches, which offer a fixed and static prior sentiment polarities of words regardless of their context, SentiCircles takes into account the co-occurrence patterns of words in different contexts in tweets to capture their semantics and update their pre-assigned strength and polarity in sentiment lexicons accordingly. Our approach allows for the detection of sentiment at both entity-level and tweet-level. We evaluate our proposed approach on three Twitter datasets using three different sentiment lexicons to derive word prior sentiments. Results show that our approach significantly outperforms the baselines in accuracy and F-measure for entity-level subjectivity (neutral vs. polar) and polarity (positive vs. negative) detections. For tweet-level sentiment detection, our approach performs better than the state-of-the-art SentiStrength by 4-5% in accuracy in two datasets, but falls marginally behind by 1% in F-measure in the third dataset.
-
Bertola, F.; Patti, V.: Ontology-based affective models to organize artworks in the social semantic web (2016)
0.00
0.0016417772 = product of:
0.008208886 = sum of:
0.008208886 = product of:
0.024626656 = sum of:
0.024626656 = weight(_text_:f in 2669) [ClassicSimilarity], result of:
0.024626656 = score(doc=2669,freq=2.0), product of:
0.11184496 = queryWeight, product of:
3.985786 = idf(docFreq=2232, maxDocs=44218)
0.028060954 = queryNorm
0.22018565 = fieldWeight in 2669, product of:
1.4142135 = tf(freq=2.0), with freq of:
2.0 = termFreq=2.0
3.985786 = idf(docFreq=2232, maxDocs=44218)
0.0390625 = fieldNorm(doc=2669)
0.33333334 = coord(1/3)
0.2 = coord(1/5)
-
Raieli, R.: ¬The semantic hole : enthusiasm and caution around multimedia information retrieval (2012)
0.00
0.0013441647 = product of:
0.0067208232 = sum of:
0.0067208232 = product of:
0.026883293 = sum of:
0.026883293 = weight(_text_:22 in 4888) [ClassicSimilarity], result of:
0.026883293 = score(doc=4888,freq=4.0), product of:
0.09826468 = queryWeight, product of:
3.5018296 = idf(docFreq=3622, maxDocs=44218)
0.028060954 = queryNorm
0.27358043 = fieldWeight in 4888, product of:
2.0 = tf(freq=4.0), with freq of:
4.0 = termFreq=4.0
3.5018296 = idf(docFreq=3622, maxDocs=44218)
0.0390625 = fieldNorm(doc=4888)
0.25 = coord(1/4)
0.2 = coord(1/5)
- Date
- 22. 1.2012 13:02:10
- Source
- Knowledge organization. 39(2012) no.1, S.13-22
-
Chen, S.-J.; Lee, H.-L.: Art images and mental associations : a preliminary exploration (2014)
0.00
0.0011405615 = product of:
0.0057028076 = sum of:
0.0057028076 = product of:
0.02281123 = sum of:
0.02281123 = weight(_text_:22 in 1416) [ClassicSimilarity], result of:
0.02281123 = score(doc=1416,freq=2.0), product of:
0.09826468 = queryWeight, product of:
3.5018296 = idf(docFreq=3622, maxDocs=44218)
0.028060954 = queryNorm
0.23214069 = fieldWeight in 1416, 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=1416)
0.25 = coord(1/4)
0.2 = coord(1/5)
- Source
- Knowledge organization in the 21st century: between historical patterns and future prospects. Proceedings of the Thirteenth International ISKO Conference 19-22 May 2014, Kraków, Poland. Ed.: Wieslaw Babik