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This paper describes the aspect extraction system that was presented at SentiRuEval-2015: aspect-based sentiment analysis of users’ reviews in Russian. The proposed system uses a conditional random field algorithm for extracting aspects mentioned in the text. We used a set of morphological and syntactic features for machine learning and demonstrated that using lemmas as a feature can improve as...

A model is a simplified representation of an aspect of the world for a specific purpose. Complex systems typically give rise to more than one model because many aspects are to be handled. For software systems, the design process can be characterized as a (partially automated) weaving of these aspects into a detailed design model. While validation is usually feasible on each single aspect when i...

This paper presents an approach for specifying reusable aspect models that define structure (using class diagrams) and behavior (using sequence diagrams). The high degree of reusability of the aspect models is demonstrated by modeling the design of 8 inter-dependent aspects of the AspectOptima case study. Based on this experience, several modeling language features that we deem essential to sup...

1 1 1 1 I I I In n n nt t t tr r r ro o o od d d du u u uc c c ct t t ti i i io o o on n n n Languages differ in the variety of quantificational structures they employ (cf. Bach et al. (eds.), 1995) and in the extent to which the surface form of various quantificational structures provides us with explicit clues about semantic interpretation. The semantic structure of sentences with a single qu...

The Internet and web applications have increased their popularity in the last few years. This boom has provoked the use of new approaches for web-based applications. These new methodologies try to address some new concerns which have appeared in this field and weren’t in traditional methodologies. One of these concerns is navigation. At the same time, it has been proved that there are some conc...

Introducing mixin-based inheritance to AOP improves the capabilities of aspects to implement incremental designs. Since it enhances the inheritance mechanism with more flexibility, it is a key technology to reuse, compose, and evolve aspects in a step-wise manner over several development stages (step-wise aspect refinement). The introduction of mixin capabilities to aspects leads to the unifica...