An empirical study

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  • In this paper, we describe an empirical study of Chinese chunking on a corpus, which is extracted from UPENN Chinese Treebank-4 (CTB4). First, we compare the performance of the state-of-the-art machine learning models. Then we propose two approaches in order to improve the performance of Chinese chunking. 1) We propose an approach to resolve the special problems of Chinese chunking. This approach extends the chunk tags for every problem by a tag-extension function. 2) We propose two novel voting methods based on the characteristics of chunking task.

    pdf8p hongvang_1 16-04-2013 32 2   Download

  • This paper describes an empirical study of the “Information Synthesis” task, defined as the process of (given a complex information need) extracting, organizing and inter-relating the pieces of information contained in a set of relevant documents, in order to obtain a comprehensive, non redundant report that satisfies the information need.

    pdf8p bunbo_1 17-04-2013 24 2   Download

  • Strategic knowledge management, innovation and firm performance: An empirical study in Vietnamese firms. The main purpose of this paper is to test the relationship between strategic knowledge management, innovation and firm performance in the Vietnamese context. Our results show that strategic knowledge management significantly enhances innovation and organizational performance.

    pdf14p tranminhluanluan 28-05-2018 13 2   Download

  • Intra-organizational knowledge transfer and firm Performance: An empirical study of Vietnam’s information technology companies. The purpose of this paper is to contribute to the limited previous research on intra-organizational knowledge transfer, by examining the impact of particular organizational factors (IT systems, organizational culture, organizational structure and incentive systems).

    pdf21p tranminhluanluan 28-05-2018 20 2   Download

  • Economic growth and macro variables in india: An empirical study. The research objective of this paper is to explore the empirical linkages between economic growth and foreign direct investment (FDI), gross fixed capital formation (GFCF) and trade openness in India (TOP) over the period 1980 to 2013.

    pdf18p tranminhluanluan 28-05-2018 8 1   Download

  • We have developed a system that generates evaluative arguments that are tailored to the user, properly arranged and concise. We have also developed an evaluation framework in which the effectiveness of evaluative arguments can be measured with real users. This paper presents the results of a formal experiment we have performed in our framework to verify the influence of argument conciseness on argument effectiveness In the remainder of the paper, we first describe a computational framework for generating evaluative arguments at different levels of conciseness. ...

    pdf8p bunrieu_1 18-04-2013 23 3   Download

  • We present an empirical study of the applicability of Probabilistic Lexicalized Tree Insertion Grammars (PLTIG), a lexicalized counterpart to Probabilistic Context-Free Grammars (PCFG), to problems in stochastic naturallanguage processing. Comparing the performance of PLTIGs with non-hierarchical N-gram models and PCFGs, we show that PLTIG combines the best aspects of both, with language modeling capability comparable to N-grams, and improved parsing performance over its nonlexicalized counterpart. Furthermore, training of PLTIGs displays faster convergence than PCFGs. ...

    pdf7p bunrieu_1 18-04-2013 27 3   Download

  • This paper proposes to solve the bottleneck of finding training data for word sense disambiguation (WSD) in the domain of web queries, where a complete set of ambiguous word senses are unknown. In this paper, we present a combination of active learning and semi-supervised learning method to treat the case when positive examples, which have an expected word sense in web search result, are only given. The novelty of our approach is to use “pseudo negative examples” with reliable confidence score estimated by a classifier trained with positive and unlabeled examples.

    pdf4p hongphan_1 15-04-2013 38 2   Download

  • This dissertation empirically investigates the potential lead lag relationship between spot and future markets in three South East Asian countries, namely Malaysia, Thailand and Singapore. It attempts to prove whether the lead–lag relationship exist between the two markets in each country individually and whether future market returns lead spot market returns in these countries.

    doc42p batiteo181 02-10-2015 21 2   Download

  • Among the various approaches to WSD, the supervised learning approach is the most successful to date. In this approach, we first collect a corpus in which each occurrence of an ambiguous word w has been manually annotated with the correct sense, according to some existing sense inventory in a dictionary. This annotated corpus then serves as the training material for a learning algorithm. After training, a model is automatically learned and it is used to assign the correct sense to any previously unseen occurrence of w in a new context. ...

    pdf8p bunbo_1 17-04-2013 24 1   Download

  • Thematic knowledge is a basis of semamic interpretation. In this paper, we propose an acquisition method to acquire thematic knowledge by exploiting syntactic clues from training sentences. The syntactic clues, which may be easily collected by most existing syntactic processors, reduce the hypothesis space of the thematic roles. The ambiguities may be further resolved by the evidences either from a trainer or from a large corpus.

    pdf8p bunmoc_1 20-04-2013 23 1   Download

  • As empirically demonstrated by the last SensEval exercises, assigning the appropriate meaning to words in context has resisted all attempts to be successfully addressed. One possible reason could be the use of inappropriate set of meanings. In fact, WordNet has been used as a de-facto standard repository of meanings. However, to our knowledge, the meanings represented by WordNet have been only used for WSD at a very fine-grained sense level or at a very coarse-grained class level. We suspect that selecting the appropriate level of abstraction could be on between both levels. ...

    pdf9p bunthai_1 06-05-2013 26 1   Download

  • AN EMPIRICAL STUDY OF EXTERNAL AUDITOR RELIANCE ON INTERNAL AUDITORS In the imperfectly sorted markets displayed in Panels D and F, however, the magnification effect is smaller: θ * = 0.9 in D and 0.5 in F. The simulations below suggest that this tendency for effectiveness sorting and magnification to depend on the number of districts when parents care about both peer group and effectiveness holds generally, as long as concern for peer group (δ ) is moderate.

    pdf127p mualan_mualan 25-02-2013 32 7   Download

  • An empirical study of scale economies in the Chinese Railway System Although results are not presented here, I have estimated several additional specifications of the basic empirical test. The absence of a positive choice effect does not seem to derive from the particular weighting of the data used here—one might prefer to weight MSAs equally, or by the number of SAT-takers, rather than by their high-school-age populations—nor from the inclusion in the sample of schools with too few SAT-takers to permit accurate estimation of the school mean...

    pdf125p mualan_mualan 25-02-2013 23 5   Download

  • This paper presents a status quo of an ongoing research study of collocations – an essential linguistic phenomenon having a wide spectrum of applications in the field of natural language processing. The core of the work is an empirical evaluation of a comprehensive list of automatic collocation extraction methods using precision-recall measures and a proposal of a new approach integrating multiple basic methods and statistical classification.

    pdf6p bunbo_1 17-04-2013 19 2   Download

  • We explore how active learning with Support Vector Machines works well for a non-trivial task in natural language processing. We use Japanese word segmentation as a test case. In particular, we discuss how the size of a pool affects the learning curve. It is found that in the early stage of training with a larger pool, more labeled examples are required to achieve a given level of accuracy than those with a smaller pool. In addition, we propose a novel technique to use a large number of unlabeled examples effectively by adding them gradually to a pool. ...

    pdf8p bunmoc_1 20-04-2013 26 2   Download

  • This paper presents the results of an empirical study on the relationship between quality management practices and competitive performance in Japanese manufacturing companies. The data was gathered from two surveys including the common sample of twenty-seven Japanese manufacturing companies in the 1990s and the 2000s.

    pdf12p sansan1 24-05-2018 9 2   Download

  • Multiple studies have attempted to estimate the cost to major weapon system programs of complying with acquisition-related statutes and regulations. Most have investigated the cost of compliance only at the contractor level, though program offices, the Services, and the Office of the Secretary of Defense would also incur such

    pdf0p xuancoem 01-02-2013 28 1   Download

  • Demographics and saving behavior of households in rural areas of Vietnam: An empirical analysis. This paper studies the saving behavior of rural households in Vietnam from two asp ects: volume of savings and methods of saving. Two econometric models are con- ducted, the first one is a panel data model, used to examine the determinants of household saving.

    pdf14p tranminhluanluan 28-05-2018 14 1   Download

  • Using accounting ratios in predicting financial distress: An empirical investigation in the Vietnam stock market. Financial distress prediction is an important and practical research topic for many stakeholders and has attracted extensive studies over the past decades.

    pdf9p tranminhluanluan 28-05-2018 13 1   Download

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