Extracting opinion targets and opinion words from online reviews are two fundamental tasks in opinion mining. This paper proposes a novel approach to collectively extract them with graph coranking. First, compared to previous methods which solely employed opinion relations among words, our method constructs a heterogeneous graph to model two types of relations, including semantic relations and ...

In most tasks related to opinion mining and sentiment analysis, it is necessary to compute the semantic orientation (i.e., positive or negative evaluative implications) of certain opinion expressions. Recent works suggest that semantic orientation depends on application domains. Moreover, we think that semantic orientation depends on the specific targets (features) that an opinion is applied to...

An increasing emphasis on consumer demand and expanded development budgets of software development firms fuel the need to upgrade software quality. Software quality is largely measured by quality standards and guidelines. This paper presents a method for modeling users’ perception of software quality. The method aims to improve the quality of data derived from user opinion surveys and facilitat...

Nowadays, an increasing amount of media platforms provide the users with opportunities for sharing their opinions about products, companies or people. In order to support users accessing opinion-based information, and to support engineers building systems that require opinionaware reasoning, intelligent opinion-aware tools and techniques are needed. This thesis contributes methods and technolog...

BACKGROUND A significant gap has been documented between best practice and the actual practice of surgery. Our group identified that colorectal cancer staging in Ontario was suboptimal and subsequently developed a knowledge translation strategy using the principles of social marketing and the influence of expert and local opinion leaders for colorectal cancer. METHODS/DESIGN Opinion leaders w...

the present paper aims to highlight the origin of the youth movements in iran during the intervening years of 1971 and 2002. during these three decades, youth movement was one of the important social movements in the political arena of the country. while explaining the origin of the movement, two changes i.e. 'generation gap' and 'democracy' have been studied and it was found that the origin of...

In this paper we present our advances in a data structure, the Gap Navigation Tree (GNT), useful for solving different visibility-based robotic tasks in unknown planar environments. We present its use for optimal robot navigation in simply-connected environments, locally optimal navigation in multiply-connected environments, pursuit-evasion, and robot localization. The guiding philosophy of thi...

This paper describes our contribution in Opinion Target Extraction and Sentiment Polarity sub-tasks of SemEval 2016 ABSA task. A Conditional Random Field model has been adopted for opinion target extraction. A Logistic Regression model with a weighting schema of positive and negative labels has been used for sentiment polarity. Our submission for opinion target extraction is ranked second among...