Story detection using generalized concepts and relations

A major challenge in automated text analysis is that different words are used for related concepts. Analyzing text at the surface level would treat related concepts (i.e. actors, actions, targets, and victims) as different objects, potentially missing common narrative patterns. Shallow parsers revea...

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Podrobná bibliografie
Vydáno v:	2015 IEEE/ACM International Conference on Advances in Social Networks Analysis and Mining (ASONAM) s. 942 - 949
Hlavní autoři:	Ceran, Betul, Kedia, Nitesh, Corman, Steven R., Davulcu, Hasan
Médium:	Konferenční příspěvek
Jazyk:	angličtina
Vydáno:	ACM 25.08.2015
Témata:	Clustering algorithms Context Feature extraction Merging Semantics Social network services Syntactics
On-line přístup:	Získat plný text
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Popis
Shrnutí:	A major challenge in automated text analysis is that different words are used for related concepts. Analyzing text at the surface level would treat related concepts (i.e. actors, actions, targets, and victims) as different objects, potentially missing common narrative patterns. Shallow parsers reveal semantic roles of words leading to subject-verb-object triplets. We developed a novel algorithm to extract information from triplets by clustering them into generalized concepts by utilizing syntactic criteria based on common contexts and semantic corpus-based statistical criteria based on "contextual synonyms". We show that generalized concepts representation of text (1) overcomes surface level differences (which arise when different keywords are used for related concepts) without drift, (2) leads to a higher-level semantic network representation of related stories, and (3) when used as features, they yield a significant 36% boost in performance for the story detection task.
DOI:	10.1145/2808797.2809312