Monitoring news and blogs has become a promising application for global operating groups, who are interested in recognizing topic developments in a fragmented topic landscape. News articles especially long ones may consist of several topics or different aspects of the same topic. In terms of Topic Detection and Tracking (TDT) it is hard to figure out the topic development in a stream of news or...

Recent research has shown that cohesive devices contribute substantially to writing quality and reveal L2 writers’ information, such as first or native language. This quantitative study adopted a cross-linguistic approach investigating the use of in expository by Asian EFL teachers compared English teachers. The involved 80 participants from three different L1 backgrounds, including 28 Vietname...

The present work aims at comparing the performance of several quadratic programming (QP) solvers for simulating large-scale frictional rigid-body systems. Traditional time-stepping schemes for simulation of multibody systems are formulated as linear complementarity problems (LCPs) with copositive matrices. Such LCPs are generally solved by means of Lemketype algorithms and solvers such as the P...

We demonstrate effective new methods of document ranking based on lexical cohesive relationships between query terms. The proposed methods rely solely on the lexical relationships between original query terms, and do not involve query expansion or relevance feedback. Two types of lexical cohesive relationship information between query terms are used in document ranking: short-distance collocati...

Topic segmentation classically relies on one of two criteria, either finding areas with coherent vocabulary use or detecting discontinuities. In this paper, we propose a segmentation criterion combining both lexical cohesion and disruption, enabling a trade-off between the two. We provide the mathematical formulation of the criterion and an efficient graph based decoding algorithm for topic seg...

We describe a “condition” number for the linear complementarity problem (LCP), which characterizes the degree of difficulty for its solution when a potential reduction algorithm is used. Consequently, we develop a class of LCPs solvable in polynomial time. The result suggests that the convexity (or positive semidefiniteness) of the LCP may not be the basic issue that separates LCPs solvable and...

Spelling errors that happen to result in a real word in the lexicon cannot be detected by a conventional spelling checker. We present a method for detecting and correcting many such errors by identifying tokens that are semantically unrelated to their context and are spelling variations of words that would be related to the context. Relatedness to context is determined by a measure of semantic ...

As an indispensable part of journal article, English abstract can promote the sharing and exchange international academic achievements. Cohesion coherence are important criteria a good abstract. Based on Halliday Hasan’s cohesion theory, this study compares 60 abstracts written by Chinese native scholars. The results show that ellipsis substitution rarely used, while reference conjunction often...