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» Answering Opinion Questions with Random Walks on Graphs
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ACL
2009
13 years 4 months ago
Answering Opinion Questions with Random Walks on Graphs
Opinion Question Answering (Opinion QA), which aims to find the authors' sentimental opinions on a specific target, is more challenging than traditional factbased question an...
Fangtao Li, Yang Tang, Minlie Huang, Xiaoyan Zhu
SIGIR
2006
ACM
14 years 22 days ago
Answering complex questions with random walk models
We present a novel framework for answering complex questions that relies on question decomposition. Complex questions are decomposed by a procedure that operates on a Markov chain...
Sanda M. Harabagiu, V. Finley Lacatusu, Andrew Hic...
PAKDD
2010
ACM
179views Data Mining» more  PAKDD 2010»
13 years 11 months ago
Answer Diversification for Complex Question Answering on the Web
We present a novel graph ranking model to extract a diverse set of answers for complex questions via random walks over a negative-edge graph. We assign a negative sign to edge weig...
Palakorn Achananuparp, Xiaohua Hu, Tingting He, Ch...
EMNLP
2007
13 years 8 months ago
Lexical Semantic Relatedness with Random Graph Walks
Many systems for tasks such as question answering, multi-document summarization, and information retrieval need robust numerical measures of lexical relatedness. Standard thesauru...
Thad Hughes, Daniel Ramage