Expressing evaluative opinions: a position statement.

Identifying Evaluative Sentences in Online Discussions

Much of opinion mining research focuses on product reviews because reviews are opinion-rich and contain little irrelevant information. However, this cannot be said about online discussions and comments. In such postings, the discussions can get highly emotional and heated with many emotional statements, and even personal attacks. As a result, many of the postings and sentences do not express po...

Application of Semi-supervised Learning to Evaluative Expression Classification

We propose to use semi-supervised learning methods to classify evaluative expressions, that is, tuples of subjects, their attributes, and evaluative words, that indicate either favorable or unfavorable opinions towards a specific subject. Due to its characteristics, the semisupervised method that we use can classify evaluative expressions in a corpus by their polarities. This can be accomplishe...

Chinese Evaluative Information Analysis

Together with the ever-growing amount of Chinese web data, the number of opinions voiced by Chinese users is rapidly increasing, and analyzing them is an important task. This paper introduces a Chinese Evaluative Information Analyzer (CEIA) and proposes a method to improve its performance. We use evaluative information as a unifying term for the information about attitudes, opinions, sentiments...

The psychology of interpreting expert evaluative opinions

Extracting word lists for domain-specific implicit opinions from corpora

Sentiment analysis relies to a large extent on lexical resources. While lists of words bearing a contextindependent evaluative polarity (‘great’, ‘bad’) are available for many languages now, the automatic extraction of domain-specific evaluative vocabulary still needs attention. This holds especially for implicit opinions or so-called polar facts. In our work, we focus on German and on a genre ...