منابع مشابه
Scope of Negation Detection in Sentiment Analysis
An important part of information-gathering behaviour has always been to find out what other people think and whether they have favourable (positive) or unfavourable (negative) opinions about the subject. This survey studies the role of negation in an opinionoriented information-seeking system. We investigate the problem of determining the polarity of sentiments in movie reviews when negation wo...
متن کاملNeural Networks For Negation Scope Detection
Automatic negation scope detection is a task that has been tackled using different classifiers and heuristics. Most systems are however 1) highly-engineered, 2) English-specific, and 3) only tested on the same genre they were trained on. We start by addressing 1) and 2) using a neural network architecture. Results obtained on data from the *SEM2012 shared task on negation scope detection show t...
متن کاملNegation Scope Detection for Twitter Sentiment Analysis
The paper describes the first sophisticated negation scope detection system for Twitter sentiment analysis. The system has been evaluated both on existing corpora from other domains and on a corpus of English Twitter data (tweets) annotated for negation. It produces better results than what has been reported in other domains and improves the performance on tweets containing negation when incorp...
متن کاملUABCoRAL: A Preliminary study for Resolving the Scope of Negation
This paper describes our participation in the closed track of the *SEM 2012 Shared Task of finding the scope of negation. To perform the task, we propose a system that has three components: negation cue detection, scope of negation detection, and negated event detection. In the first phase, the system creates a lexicon of negation signals from the training data and uses the lexicon to identify ...
متن کاملLearning the scope of negation in biomedical texts
In this paper we present a machine learning system that finds the scope of negation in biomedical texts. The system consists of two memory-based engines, one that decides if the tokens in a sentence are negation signals, and another that finds the full scope of the negation signals. Our approach to negation detection differs in two main aspects from existing research. First, we focus on finding...
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ژورنال
عنوان ژورنال: Work Papers of the Summer Institute of Linguistics, University of North Dakota Session
سال: 1971
ISSN: 0361-4700
DOI: 10.31356/silwp.vol15.06