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Simulating neurobiological localization of acoustic signals based on temporal and volumetric differentiations  [PDF]
Nikesh S. Dattani
Quantitative Biology , 2008,
Abstract: The localization of sound sources by the human brain is computationally simulated from a neurobiological perspective. The simulation includes the neural representation of temporal differences in acoustic signals between the ipsilateral and contralateral ears for constant sound intensities (angular localization), and of volumetric differences in acoustic signals for constant azimuthal angles (radial localization). The transmission of the original acoustic signal from the environment, through each significant stage of intermediate neurons, to the primary auditory cortex, is also simulated. The errors that human brains make in attempting to localize sounds in evolutionarily uncommon environments (such as when one ear is in water and one ear is in air) are then mathematically predicted. A basic overview of the physiology behind sound localization in the brain is also provided.
Duality between Temporal Networks and Signals: Extraction of the Temporal Network Structures  [PDF]
Ronan Hamon,Pierre Borgnat,Patrick Flandrin,Céline Robardet
Computer Science , 2015,
Abstract: We develop a framework to track the structure of temporal networks with a signal processing approach. The method is based on the duality between networks and signals using a multidimensional scaling technique. This enables a study of the network structure using frequency patterns of the corresponding signals. An extension is proposed for temporal networks, thereby enabling a tracking of the network structure over time. A method to automatically extract the most significant frequency patterns and their activation coefficients over time is then introduced, using nonnegative matrix factorization of the temporal spectra. The framework, inspired by audio decomposition, allows transforming back these frequency patterns into networks, to highlight the evolution of the underlying structure of the network over time. The effectiveness of the method is first evidenced on a toy example, prior being used to study a temporal network of face-to-face contacts. The extraction of sub-networks highlights significant structures decomposed on time intervals.
A Comparative Corpus-based Study of Semantic Prosody  [cached]
Changhu Changhu
Journal of Language Teaching and Research , 2010, DOI: 10.4304/jltr.1.4.451-456
Abstract: The present study uses the main corpus CLEC and the reference corpus BROWN to explore the semantic prosody of COMMIT in Chinese EFL. The result indicates that Chinese EFL learners exhibit similar semantic prosody as compared with those of native speakers. Nevertheless, they still use lots of interlanguge collocations and unusual collocations, which ruin the due semantic prosodic harmony, thus making their English quite unnatural and less idiomatic. Finally, implications on integrating semantic prosody into ESL/EFL vocabulary pedagogy are discussed.
A Corpus-based Lexical Study of Sermons in Nigeria  [cached]
Alexandra Uzoaku Esimaje
English Language Teaching , 2012, DOI: 10.5539/elt.v5n9p24
Abstract: Religious sermons play a very significant role in a pluralist setting like Nigeria, as organs of social, political and moral education. The fulfilment of these functions is partly contingent on the effective use of language. If the sermon-giver and his audience draw from the same pool of lexis, communication in the genre will not only be enhanced but its teaching and practice will also align, thereby bridging the gap between the two. It is to this end that this study attempts to identify the words most associated with Christian sermons in English, in Nigeria. To carry out this study, a corpus of present-day sermons in Nigeria was constructed and compared to a reference corpus of sermons from other parts of the world, in order to find out those lexical items which are characteristic of sermons, whether in terms of types, frequency or usage. The study reveals the role of textual context to be the definition of thematic focus because, although the sermon words in the two contexts manifest high similarity, their degrees of significance in the contexts differ substantially. Additionally, the findings reveal diversity, both in lexical choice and the discourse structure of sermons. However, in both contexts, the sermons demonstrate similarity in semantic grouping. So, for the teacher of English for religious purposes (ERP) and the user of English in church contexts, this work offers insights into the lexical world of sermons in Nigeria.
Request Strategies in Contemporary Chinese Teledramas—A Corpus-based Study
Shengli Wang
Theory and Practice in Language Studies , 2012, DOI: 10.4304/tpls.1.9.1139-1149
Abstract: This study was designed to explore the issue of request strategies in the Chinese setting by establishing a corpus of vedio clips of contemporary Chinese teledramas on the basis of an overview of previous studies on Chinese request strategies. In the present study, we chose 3970 short sequences of video clips from 35 Chinese teledramas which vividly describe the Chinese people’s life in the contemporary times. Taking the two variables of power and distance as reference points, nine situations were designed in this study. Elaborate request strategies were expected to be consecutively elicited in the nine situations of the 35 contemporary Chinese teledrama serials from the perspectives of social power and social distance in the section. It offered a new research method and idea for the future speech acts research.
Study of Automatic Abstracting Based on Corpus and Hierarchical Dictionary
基于语料库与层次词典的自动文摘研究

SONG Jin,ZHAO Dong-yan,
宋今
,赵东岩

软件学报 , 2000,
Abstract: The study of automatic abstracting is a vital and practical information processing task in natural language processing,and becomes an important problem in domains such as Internet information retrieval.An approach based on corpus proposed by this paper provides an integration of the advantages of linguistic analysis based methods and those based on statistics.In essence,the basic idea of corpus-based method is at the expense of the cost of analysis outside the system to gain the efficiency of the algorithm inside the system.The algorithm given by the paper implements both keywording and abstracting while the former is based on a hierarchical dictionary and the latter on the corpus.
A Corpus-based Study of the Misuse of Tenses in the English Composition of Chinese College Students  [cached]
Manfu Duan
English Language Teaching , 2011, DOI: 10.5539/elt.v4n4p173
Abstract: Chinese Students’ English has its own characteristics. It is of significance to analyze and study these characteristics. The paper uses the corpus approach to study the misuse of tenses in Chinese College students’ CET-4 compositions of the sub-corpus of “Non-major College Students” in the Chinese Learner English Corpus (CLEC). Nine types of misuse are identified, and analysis is made of the causes of each type. It is found that the misuse of tenses in Chinese college students’ English compositions is mainly in the simple present tense and the simple past tense; the wrong collocation of tenses is mostly in the kind of complex sentence with the main clause and subordinate clause both indicating the future action and the subordinate clause using the simple present tense; as for the two special words “could” and “would” with both declarative and subjunctive usages, Chinese students often get confused and misuse them; students have vague understanding of the time concept indicated by the different tenses. Based on the analysis, the author tentatively provide some interpretations for these mistakes: many problems exist in the teaching of grammar in Chinese English teaching, and the teaching of tenses is not systematic and the focus of teaching and tests is not in accordance with the actual uses of tenses; students are affected by inter-lingual transfer and intra-lingual transfer when making English sentences. At last, some suggestions are offered by the author for the teaching of tenses: teachers should combine systematic teaching of tenses with the teaching of tenses in actual contexts and students should try to write English compositions using different tenses.
A Tentative Corpus-based Study of Collocations Acquisition by Chinese English Language Learners  [cached]
You-mei GAO,Yun ZHANG
Canadian Social Science , 2009,
Abstract: Though collocations have drawn much attention in the field of language acquisition, yet difficulties with them have not been investigated in much detail. This paper reports on a corpus-based exploratory study that analyzes the mistakes learners made when they produced English collocations. The study shows that not only beginners but also advanced learners have difficulties in choosing the right collocates and the difficulties that learners of different levels have are more or less the same. The biggest challenge for them is to choose the appropriate verbs. The L1 influence on the production of L2 collocations exists at every stage of learning though it varies with the learners’ L2 competence. Based on this study, a corpus-based approach is advanced in the end to cope with the difficulties in the acquisition of L2 collocations. Key words: Collocation, second language acquisition, corpus-based, CLEC Résumé: Ce document fait un bilan sur une étude explorateur de recueil-basée qui fait une analyse des erreurs commis par les apprenants au cas des accords. Cette étude montre que non seulement les débutants mais aussi les apprenants du niveau avancé ont du mal à choisir un bon terme d’accord et que les erreurs y reviennent au même pour tout niveau. Le plus grand défi pour eux est de choisir le mot juste. Le fait que la langue 1 inflence sur la production du choix d’accord existe au niveau quel que ce soit malgré la variation du niveau de langue 2 des apprenants. Basé sur cette étude, une approche recueil-basée est engagée à la fin pour traiter ce problème existant dans l’apprentissage de l’accord en Langue 2. Mots clefs: Accord , apprentissage de la langue secondaire, recueil-basée , CLEC
THE USE OF ENGLISH NEGATION BY SPANISH STUDENTS OF ENGLISH: A LEARNER CORPUS-BASED STUDY
Araceli Garca Fuentes
Revista de Lingüística y Lenguas Aplicadas , 2008, DOI: 10.4995/rlyla.2008.689
Abstract: This paper is based on a research project by the same author; in which the acquisition of the English negation system is investigated. This is a preliminary account and it is corpus-based. Two learner corpora were used: the International Corpus of Learner English (ICLE) Spanish subcorpus and the Santiago University Learner of English Corpus (SULEC). The former is a sample corpus -it is finished- and it contains written argumentative essays of Spanish speakers. The latter contains both spoken and written data -oral interviews and argumentative texts- and it is a monitor corpus; new data are continuously being added. The Spanish subcorpus of ICLE contains over 125.000 words; whereas SULEC contained over 350.000 words at the moment of the research. A native English corpus was also used in order to contrast the learner and the native use of English negation.
The productivity of the prefix über- in English and Hungarian: A cross-linguistic, corpus-based study  [PDF]
Majtényi, Melinda
Argumentum , 2012,
Abstract: The aim of this paper is to provide a corpus-based, cross-linguistic investigation of the prefix über-. Using the Corpus of Contemporary American English and a Hungarian webcorpus, I have collected data containing instances of über- and assigned a rating of productivity based on Baayen’s (2009) productivity measures. Additionally, the bases to which über- is attached, the spelling of these constructions, genre in which they occur and their meaning have been examined in the corpus data set.
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