DOMAIN SPECIFIC NAMED ENTITY RECOGNITION
Published In: 1ST INTERNATIONAL CONFERENCE ON ADVANCES IN COMPUTER, ELECTRONICS AND ELECTRICAL ENGINEERING
Author(s): AVINASH AGRAWAL
Abstract: Named entities are phrases denoting the names of persons, locations, organizations etc. in text documents. These phrases are important for the access to document content, since they form the building blocks for the analysis of documents. Named Entity Recognition has applications in Natural Language Processing, document indexing, document annotation, translation, etc. NER plays an important role in various research areas of Natural Language Processing (NLP) like Question Answering and Summarization Systems, Information Retrieval, Machine Translation, Video Annotation, Semantic Web Search, Bioinformatics etc. The computational research of automatically identifying named entities in texts forms a vast and heterogeneous pool of strategies, methods and representations. In this paper, we will present an overview of the various methods used for implementing NER systems by giving the merits and demerits of each. We will also discuss some of the approaches suggested and implemented by NER syste
- Publication Date: 12-Mar-2012
- DOI: 10.15224/978-981-07-1847-3-999
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POWER QUALITY IMPROVEMENT USING DSTATCOM FOR SMALL ISOLATED ALTERNATOR FEEDING DISTRIBUTION SYSTEM
Published In: 1ST INTERNATIONAL CONFERENCE ON ADVANCES IN COMPUTER, ELECTRONICS AND ELECTRICAL ENGINEERING
Author(s): DEEPIKA MASAND , SUNIL KR. SINGH
Abstract: This paper demonstrates a perfect controlled DSTATCOM model with a small isolated distribution system to improve power quality of the system in which a linear/nonlinear three-phase load is fed by a small alternator. A hysteresis rule based carrier-less PWM current controller is used to control the DSTATCOM. Three leg IGBT based PWM-VSI is used as VSC with a capacitor in its parallel working as DSTATCOM. Two PI controllers are used. Any dip in voltages due to sudden load change/dynamic conditions of the system is improved by this DSTATCOM model presented in this paper. Voltage regulation, power factor correction and load balancing is obtained in this system. The work has been carried out in MATLAB environment using Simulink and Simpowersystem toolboxes. The proposed DSTATCOM model is very effective to enhance the power quality of an isolated distribution system feeding power to crucial equipments in remote areas.
- Publication Date: 12-Mar-2012
- DOI: 10.15224/978-981-07-1847-3-1003
- Views: 0
- Downloads: 0