TAILIEUCHUNG - Báo cáo khoa học: "Detecting Experiences from Weblogs"

Weblogs are a source of human activity knowledge comprising valuable information such as facts, opinions and personal experiences. In this paper, we propose a method for mining personal experiences from a large set of weblogs. We define experience as knowledge embedded in a collection of activities or events which an individual or group has actually undergone. Based on an observation that experience-revealing sentences have a certain linguistic style, we formulate the problem of detecting experience as a classification task using various features including tense, mood, aspect, modality, experiencer, and verb classes. . | Detecting Experiences from Weblogs Keun Chan Park Yoonjae Jeong and Sung Hyon Myaeng Department of Computer Science Korea Advanced Institute of Science and Technology keunchan hybris myaeng @ Abstract Weblogs are a source of human activity knowledge comprising valuable information such as facts opinions and personal experiences. In this paper we propose a method for mining personal experiences from a large set of weblogs. We define experience as knowledge embedded in a collection of activities or events which an individual or group has actually undergone. Based on an observation that experience-revealing sentences have a certain linguistic style we formulate the problem of detecting experience as a classification task using various features including tense mood aspect modality experiencer and verb classes. We also present an activity verb lexicon construction method based on theories of lexical semantics. Our results demonstrate that the activity verb lexicon plays a pivotal role among selected features in the classification performance and shows that our proposed method outperforms the baseline significantly. 1 Introduction In traditional philosophy human beings are known to acquire knowledge mainly by reasoning and experience. Reasoning allows us to draw a conclusion based on evidence but people tend to believe it firmly when they experience or observe it in the physical world. Despite the fact that direct experiences play a crucial role in making a firm decision and solving a problem people often resort to indirect experiences by reading written materials or asking around. Among many sources people resort to the Web has become the largest one for human experiences especially with the proliferation of weblogs. While Web documents contain various types of information including facts encyclopedic knowledge opinions and experiences in general personal experiences tend to be found in weblogs more often than other web documents like news articles home pages

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