As thousands of features are available in many pattern recognition and machine learning applications, feature selection remains an important task to ̄nd the most compact representation of the original data. In the literature, although a number of feature selection methods have been developed, most of them focus on optimizing speci ̄c objective functions. In this paper, we ̄rst propose a general gr...

This paper reports on the participation of Techlimed in the Second Shared Task on Automatic Arabic Error Correction organized by the Arabic Natural Language Processing Workshop. This year's competition includes two tracks, and, in addition to errors produced by native speakers (L1), also includes correction of texts written by learners of Arabic as a foreign language (L2). Techlimed participate...

It is shown that on certain Banach spaces, including C[0,1] and L1[0,1], there is no strongly continuous semigroup (Tt )0<t<1 consisting of weakly compact operators such that (Tt )0<t<1 is an R-bounded family. More general results concerning approximating sequences are included and some variants of R-boundedness are also discussed.  2004 Elsevier Inc. All rights reserved.

Let V be a finite set, called the vertex set, and let .1 be a simplicial complex on V. Thus .1 is a collection of subsets of V such that (i) {x} EL1 for any x E V, and (ii) a E .1, 'r c a imply 'r E L1. An element a of .1 is called an i-face if #( a) = i + 1. Here, #( a) is the cardinality of a as a set. The positive integer dim .1: = max{ #( a) 1; a E L1} is called the dimension of .1. Let v =...

Title of dissertation: AUTOMATIC ACTIVATION OF SEMANTIC REPRESENTATION DURING SECOND LANGUAGE PROCESSING Written by: Sun Young Ahn, Doctor of Philosophy, 2015 Directed by: Professor Nan Jiang Department of Second Language Acquisition The present study is motivated by two questions. First, can late learners of a second language (L2), who begin learning after puberty and are unbalanced bilinguals...

Book Review: Ellis, R., Skehan, P., Li, A., Shintani, N., &amp; Lambert, C. (2020). Task-based language teaching: Theory and practice. Cambridge University Press.

This study tests the influence from L1 experience and psychoacoustic similarity on the naïve perception of Cantonese tones. Three groups of subjects, Mandarin, English and French listeners, participated in an AX discrimination task and a dissimilarity rating task. The discrimination results showed that while the three L1 groups shared some confusable tone pairs which are acoustically similar, t...

This article reports on the findings of a study that investigated the impact of manipulating task performance conditions on listening task performance by learners of English as a foreign language (EFL). The study was designed to explore the effects of changing complexity dimensions on listening task performance and to achieve two aims: to see how listening comprehension task performance was aff...