Subjectivity is discussed in the context of information processing, and its properties are considered in relation to Popper’s three Worlds model of information. The uncertainties that subjectivity creates are seen as central to some problematic issues of information handling, including classification and retrieval. An appreciation of problems relating to subjectivity also has relevance in sever...

We explore the relation between word sense subjectivity and cross-lingual lexical substitution, following the intuition that good substitutions will transfer a word’s (contextual) sentiment from the source language into the target language. Experiments on English-Chinese lexical substitution show that taking a word’s subjectivity into account can indeed improve performance. We also show that ju...

Subjectivity in natural language refers to aspects of language used to express opinions and evaluations (Banfield, 1982; Wiebe, 1994). There are numerous applications for which knowledge of subjectivity is relevant, including genre detection, information extraction, and information retrieval. This paper shows promising results for a straightforward method of identifying collocational clues of s...

This paper introduces a method for creating a subjectivity lexicon for languages with scarce resources. The method is able to build a subjectivity lexicon by using a small seed set of subjective words, an online dictionary, and a small raw corpus, coupled with a bootstrapping process that ranks new candidate words based on a similarity measure. Experiments performed with a rule-based sentence l...

This paper presents a lexicon model for subjectivity description of Dutch verbs that offers a framework for the development of sentiment analysis and opinion mining applications based on a deep syntactic-semantic approach. The model aims to describe the detailed subjectivity relations that exist between the participants of the verbs, expressing multiple attitudes for each verb sense. Validation...

We show that the quality of sentence-level subjectivity classification, i.e. the task of deciding whether a sentence is subjective or objective, can be improved by incorporating hitherto unused features: readability measures. Hence we investigate in 6 different readability formulae and propose an own. Their performance is evaluated in a 10-fold cross validation setting using machine learning. T...