This paper presents a new method for refining image annotation by integrating probabilistic la- tent semantic analysis （PLSA） with conditional random field （CRF）. First a PLSA model with asymmetric modalities is c...This paper presents a new method for refining image annotation by integrating probabilistic la- tent semantic analysis （PLSA） with conditional random field （CRF）. First a PLSA model with asymmetric modalities is constructed to predict a candidate set of annotations with confidence scores, and then model semantic relationship among the candidate annotations by leveraging conditional ran- dom field. In CRF, the confidence scores generated lay the PLSA model and the Fliekr distance be- tween pairwise candidate annotations are considered as local evidences and contextual potentials re- spectively. The novelty of our method mainly lies in two aspects ： exploiting PLSA to predict a candi- date set of annotations with confidence scores as well as CRF to further explore the semantic context among candidate annotations for precise image annotation. To demonstrate the effectiveness of the method proposed in this paper, an experiment is conducted on the standard Corel dataset and its re- sults are ＇compared favorably with several state-of-the-art approaches.展开更多
This paper reviews three main perspectives of chunk analyses： traditional phraseological, psycholinguistic, and corpus linguistic perspectives. Traditional phraseological perspective focuses on syntactic and semantic...This paper reviews three main perspectives of chunk analyses： traditional phraseological, psycholinguistic, and corpus linguistic perspectives. Traditional phraseological perspective focuses on syntactic and semantic aspects of chunks and its most important criteria of chunk identifications and classifications are compositionality and frozenness/fixedness. Psycholinguistic perspective focuses on the psychological salience of chunks and its most important criterion of identifying a chunk is whether it is processed as a whole unit. Corpus linguistic perspective focuses on frequencies of chunks and its identification of chunks is done on the basis of frequency counts. All of the three perspectives have tapped into the phenomenon of multi-word combinations and yielded fruitful findings on the use of chunks in aspects of quantitative, syntactic, semantic, functional, and psychological features; however, each has their pros and cons展开更多
With the progress of the implementation of College English Reformation, the balance of distributed attention between six requirements is assuming more and more weight for the primary purpose of improving learners'...With the progress of the implementation of College English Reformation, the balance of distributed attention between six requirements is assuming more and more weight for the primary purpose of improving learners' listening and speaking competences. Under such circumstance efficiency in teaching and learning reading comprehension is increasingly becoming crucial since it constitutes an indispensable part of acquiring English as a second language. The orientation of functional discourse markers at various textual levels in CET reading texts is elaborated upon in this paper to map out one alternative way to contriving an effective reading strategy on the basis of reading test — reading strategy study.展开更多
Successful language learning entails two levels of competence： adequate control of the grammatical system of the target language and ability to effectively communicate in pragmatic contexts. Espoused by the mantra of...Successful language learning entails two levels of competence： adequate control of the grammatical system of the target language and ability to effectively communicate in pragmatic contexts. Espoused by the mantra of much inculcated communicative orientation in English language teaching and learning, the divination points to pedagogical trends which essentially ）ettison grammar instruction in the classroom. However, language is not merely a tool of communication but an instrument of social control, political power, and economic mobility, all of which require not only skills to ＂get your message across＂ by whatever means, but more importantly, the accurate use of and facility with language that has been codified and assessed formally by standardized tests. This paper critically examines the role of grammatical accuracy and its relation to communication in terms of social and academic functions of English and advocates a revival of currently penurious grammar instruction. Examples from both native and nonnative speakers of English are used to illustrate the interface between grammar and social and political dimensions of communication through language.展开更多
基金Supported by the National Basic Research Priorities Programme(No.2013CB329502)the National High Technology Research and Development Programme of China(No.2012AA011003)+1 种基金the Natural Science Basic Research Plan in Shanxi Province of China(No.2014JQ2-6036)the Science and Technology R&D Program of Baoji City(No.203020013,2013R2-2)
文摘This paper presents a new method for refining image annotation by integrating probabilistic la- tent semantic analysis （PLSA） with conditional random field （CRF）. First a PLSA model with asymmetric modalities is constructed to predict a candidate set of annotations with confidence scores, and then model semantic relationship among the candidate annotations by leveraging conditional ran- dom field. In CRF, the confidence scores generated lay the PLSA model and the Fliekr distance be- tween pairwise candidate annotations are considered as local evidences and contextual potentials re- spectively. The novelty of our method mainly lies in two aspects ： exploiting PLSA to predict a candi- date set of annotations with confidence scores as well as CRF to further explore the semantic context among candidate annotations for precise image annotation. To demonstrate the effectiveness of the method proposed in this paper, an experiment is conducted on the standard Corel dataset and its re- sults are ＇compared favorably with several state-of-the-art approaches.
文摘This paper reviews three main perspectives of chunk analyses： traditional phraseological, psycholinguistic, and corpus linguistic perspectives. Traditional phraseological perspective focuses on syntactic and semantic aspects of chunks and its most important criteria of chunk identifications and classifications are compositionality and frozenness/fixedness. Psycholinguistic perspective focuses on the psychological salience of chunks and its most important criterion of identifying a chunk is whether it is processed as a whole unit. Corpus linguistic perspective focuses on frequencies of chunks and its identification of chunks is done on the basis of frequency counts. All of the three perspectives have tapped into the phenomenon of multi-word combinations and yielded fruitful findings on the use of chunks in aspects of quantitative, syntactic, semantic, functional, and psychological features; however, each has their pros and cons
文摘With the progress of the implementation of College English Reformation, the balance of distributed attention between six requirements is assuming more and more weight for the primary purpose of improving learners' listening and speaking competences. Under such circumstance efficiency in teaching and learning reading comprehension is increasingly becoming crucial since it constitutes an indispensable part of acquiring English as a second language. The orientation of functional discourse markers at various textual levels in CET reading texts is elaborated upon in this paper to map out one alternative way to contriving an effective reading strategy on the basis of reading test — reading strategy study.
文摘Successful language learning entails two levels of competence： adequate control of the grammatical system of the target language and ability to effectively communicate in pragmatic contexts. Espoused by the mantra of much inculcated communicative orientation in English language teaching and learning, the divination points to pedagogical trends which essentially ）ettison grammar instruction in the classroom. However, language is not merely a tool of communication but an instrument of social control, political power, and economic mobility, all of which require not only skills to ＂get your message across＂ by whatever means, but more importantly, the accurate use of and facility with language that has been codified and assessed formally by standardized tests. This paper critically examines the role of grammatical accuracy and its relation to communication in terms of social and academic functions of English and advocates a revival of currently penurious grammar instruction. Examples from both native and nonnative speakers of English are used to illustrate the interface between grammar and social and political dimensions of communication through language.
