research poster presentation design © 2012 © 2012 posterpresentations.com 2117 fourth street,...
TRANSCRIPT
![Page 1: RESEARCH POSTER PRESENTATION DESIGN © 2012 © 2012 PosterPresentations.com 2117 Fourth Street, Unit C Berkeley CA 94710 posterpresenter@gmail.com](https://reader036.vdocuments.us/reader036/viewer/2022083008/56649eb55503460f94bbebf7/html5/thumbnails/1.jpg)
RESEARCH POSTER PRESENTATION DESIGN © 2012
www.PosterPresentations.com
Existing algorithms for FINE-GRAINED OPINION EXTRACTION can to some extent identify and characterize private states in text when they are expressed explicitly.
Similarly, existing algorithms for SEMANTIC EQUIVALENCE and NOVELTY DETECTION have focused to date on facts and event data.
OVERVIEW HIGH-LEVEL SYSTEM ARCHITECTURE CURRENT STATE OF THE ART
Our existing systems can:
• Recognize and extract explicit private states in newswire• Joint opinion+source recognition: 70F • Opinion expressions: • 72F (direct expressions)The congressman criticized Obamacare.• 66F (indirect expressions)They ignored the unreasonable customer.
• Contextual polarity given polar word: •78% accuracy
• Identify semantic relatedness between texts using lexical matching approaches• Senseval 2012: 0.61 Pearson
EXPECTED IMPACT
Claire Cardie (Cornell) Rada Mihalcea (UNT) Janyce Wiebe (Pittsburgh)
Uncovering Motivations, Stances and Anomalies Through Private-State Recognition and Interpretation
WE PROPOSE TO
• Identify the rich spectrum of private states expressed not explicitly but through implicature (i.e. inference) and connotation;• Track private states through discourse and across documents; and• Produce systems for private-state-aware semantic equivalence and novelty detection.
Private-State Extraction
Cross-Document Tracking of Private States
Private-state-aware SemanticEquivalence and Novelty
Detection
BloggerX: The international community seems to be tolerating the Israeli campaign against the Palestinians.
BloggerX: Palestinians IsraelTurkey…
[explicit] Int’l community: Israeli campaign[inferred] BloggerX: Israeli campaign Israel Palestinians
…
*attitude change*: BloggerX Palestinians
Private-State Database
Our private-state-aware semantic equivalence and novelty detection algorithms will assist analysts in:
• Recognizing shared beliefs among key participants;
• Determining changes in the attitudes and beliefs of key participants;
• Detecting contradictions among expressed and inferred opinions, emotions, and attitudes; and
• Identifying emerging or disintegrating alliances.
The people are happy because Chavez has fallen.[explicit] The people: Chavez falling[inferred] The people: Chavez himself
BloggerY: It is no surprise then that MoveOn would attack Senator McCain[explicit] MoveOn Senator McCain[inferred] BloggerY
Private-State Extraction• Representation and
acquisition of connotation lexical knowledge
• Improved recognition of explicit private states
• Compositional calculation of polarity
• Novel framework for representing and processing private-state implicature
Cross-Document Private-State Tracking• Within-document and
cross-document coreference resolution
• Private-state recognition in conversational data
• Discourse-level integration of explicit private states, connotations, and inferred private states
Private-State-Aware Semantic Equivalence and Novelty Detection • Private-state aware
semantic relatedness• Sentence-level novelty
detection• Novelty detection on
protagonist-centered event graphs
MO attacking SM MoveOnSenator McCain
MO attacking SM MoveOn
Senator McCain
OREvidence
from throughoutthe discourse must be
marshaled to choose which set of inferences is more probable
….
…
MO….
…
MO
?
EXAMPLES
Contact information:[email protected]
[email protected]@cs.pitt.edu