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Analysis with features

Xem 1-20 trên 460 kết quả Analysis with features
  • We discuss Feature Latent Semantic Analysis (FLSA), an extension to Latent Semantic Analysis (LSA). LSA is a statistical method that is ordinarily trained on words only; FLSA adds to LSA the richness of the many other linguistic features that a corpus may be labeled with. We applied FLSA to dialogue act classification with excellent results. We report results on three corpora: CallHome Spanish, MapTask, and our own corpus of tutoring dialogues.

    pdf8p bunbo_1 17-04-2013 38 2   Download

  • This paper presents an application of finite state transducers weighted with feature structure descriptions, following Amtrup (2003), to the morphology of the Semitic language Tigrinya. It is shown that feature-structure weights provide an efficient way of handling the templatic morphology that characterizes Semitic verb stems as well as the long-distance dependencies characterizing the complex Tigrinya verb morphotactics. A relatively complete computational implementation of Tigrinya verb morphology is described. ...

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  • We propose a hybrid approach to coordinate structure analysis that combines a simple grammar to ensure consistent global structure of coordinations in a sentence, and features based on sequence alignment to capture local symmetry of conjuncts. The weight of the alignmentbased features, which in turn determines the score of coordinate structures, is optimized by perceptron training on a given corpus. A bottom-up chart parsing algorithm efficiently finds the best scoring structure, taking both nested or nonoverlapping flat coordinations into account. ...

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  • Coordination disambiguation remains a difficult sub-problem in parsing despite the frequency and importance of coordination structures. We propose a method for disambiguating coordination structures. In this method, dual decomposition is used as a framework to take advantage of both HPSG parsing and coordinate structure analysis with alignment-based local features. We evaluate the performance of the proposed method on the Genia corpus and the Wall Street Journal portion of the Penn Treebank.

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  • This paper presents a predicate-argument structure analysis that simultaneously conducts zero-anaphora resolution. By adding noun phrases as candidate arguments that are not only in the sentence of the target predicate but also outside of the sentence, our analyzer identifies arguments regardless of whether they appear in the sentence or not. Because we adopt discriminative models based on maximum entropy for argument identification, we can easily add new features. We add language model scores as well as contextual features.

    pdf4p hongphan_1 15-04-2013 37 1   Download

  • Founded in 1807, John Wiley & Sons is the oldest independent publishing company in the United States.With offices in North America, Europe,Australia and Asia,Wiley is globally committed to developing and marketing print and electronic products and ser- vices for our customers’ professional and personal knowledge and understanding. The Wiley Trading series features books by traders who have survived the market’s ever changing temperament and have prospered—some by reinventing systems, others by getting back to basics.

    pdf250p benq 01-03-2009 290 111   Download

  • Take REA’s FREE Practice Exam After studying the material in the Crash Course, go online and test what you’ve learned. Our free, full-length practice exam features timed testing, detailed explanations of answers, and automatic scoring analysis. The exam is balanced to include every topic and type of question found on the actual AP exam, so you know you’re studying the smart way.

    pdf95p kennybibo 10-07-2012 188 69   Download

  • With respect to the sampling of tomato it occurred at the beginning, on the highest peak and at the end of the production stage of tomato. For each sampling unit a zigzag path by the crop was followed, harvesting a tomato every three places along the zig-zag, and then based on a quartering system, obtaining a sample of 1 kg per plot.

    pdf254p conquynho32 18-09-2012 125 33   Download

  • Inside this book you will discover candlestick charting, one of the most popular tools in technical analysis. Candlestick Charting Explained features updated charts and analysis as well as new material on integrating Western charting analysis with Japanese candlestick analysis, grouping candlesticks into families, detecting and avoiding false signals, and more.

    pdf155p greengrass304 14-09-2012 66 20   Download

  • The market in bond market securities, also known as the fixedincome market, is incredibly large and diverse, and one that plays an irreplaceable part in global economic development. The vast majority of securities in the world today are debt instruments, with outstanding volume estimated at more than $10 trillion. Fixed-Income Securities and Derivatives Handbook provides a concise and accessible description of the main elements of the markets, concentrating on the instruments used and their applications.

    pdf376p vigro23 24-08-2012 65 18   Download

  • nside this book you will discover candlestick charting, one of the most popular tools in technical analysis. Candlestick Charting Explained features updated charts and analysis as well as new material on integrating Western charting analysis with Japanese candlestick analysis, grouping candlesticks into families, detecting and avoiding false signals, and more.

    pdf156p transang3 29-09-2012 44 13   Download

  • In the last two decades, the discovery of signaling roles of ROS demonstrated their universal use in biological systems. The third section of this book, entitled “Reactive Species as Signaling Molecules” contains the chapters covering clear ROS-based signaling in yeasts and plants. It is not strange that many authors provide readers with the information gained from yeasts. This is a very popular classic eukaryotic model system to disclose molecular mechanisms of cellular responses to oxidative stress (Lushchak, 2010). In the first chapter of this book section, M. A. de la Torre-Ruiz et al..

    pdf310p tieuyeuquai456 06-10-2012 37 6   Download

  • Commodity-level analysis illustrates the size of opportunities and the importance of technology. In many African countries with large amounts of suitable but currently uncultivated land, transfers of technology could pro- vide large benefits to local populations. To reduce risks and increase benefits, greater effort will be needed to identify local comparative advantage, assess the technical viability of proposed investments, improve weak institutional frameworks for land governance, and level the playing field for smallholder competitiveness.

    pdf36p enterroi 02-02-2013 31 4   Download

  • We address the problem of part-of-speech tagging for English data from the popular microblogging service Twitter. We develop a tagset, annotate data, develop features, and report tagging results nearing 90% accuracy. The data and tools have been made available to the research community with the goal of enabling richer text analysis of Twitter and related social media data sets.

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  • Competitors. Monitoring the network could be used for corporate research; for exam- ple, gathering info about how a company uses electricity, from which utility, and for what loads. The curious party could be a competing utility, or a manufacturer of more electrically efficient equipment. Human error. This can affect control system implementation (thus the need for com- missioning), key sharing, network administration, physical security, upgrades, flaws in software and hardware development, etc. ...

    pdf12p khongmuonnghe 04-01-2013 40 2   Download

  • Group II introns are both catalytic RNAs and mobile retroelements that move through a process catalyzed by a RNP complex consisting of an intron-encoded protein and the spliced intron lariat RNA. Group II intron-encoded proteins are multifunctional and contain an N-terminal reverse transcriptase domain, followed by a putative RNA-binding domain (domain X) associated with RNA splicing or maturase activity and a C-terminal DNA binding⁄DNA endonuclease region.

    pdf11p mobifone23 18-01-2013 27 2   Download

  • A great deal must still be learnt on the structural features of amyloid assemblies, particularly prefibrillar aggregates, and the relationship of the latter with amyloid cytotoxicity. Presently, it is recognized that the popula-tion of unstable, heterogeneous amyloid oligomers and protofibrils is mainly responsible for amyloid cytotoxicity.

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  • EPR spectroscopy, performed after site-directed spin-labeling, was used to study structural dynamics in a cold-adapted alkaline phosphatase (EC 3.1.1.1). Differences in the structural environment of six spin-labeled side chains allowed them to be classified (with reference to previously obtained mobility maps) as belonging to loop positions (either relatively surface exposed or in structural contact) or helix positions (surface exposed, in contact, or buried).

    pdf11p viettel02 22-02-2013 15 2   Download

  • Most sentiment analysis approaches use as baseline a support vector machines (SVM) classifier with binary unigram weights. In this paper, we explore whether more sophisticated feature weighting schemes from Information Retrieval can enhance classification accuracy. We show that variants of the classic tf.idf scheme adapted to sentiment analysis provide significant increases in accuracy, especially when using a sublinear function for term frequency weights and document frequency smoothing.

    pdf10p hongdo_1 12-04-2013 38 2   Download

  • We derive two variants of a semi-supervised model for fine-grained sentiment analysis. Both models leverage abundant natural supervision in the form of review ratings, as well as a small amount of manually crafted sentence labels, to learn sentence-level sentiment classifiers. The proposed model is a fusion of a fully supervised structured conditional model and its partially supervised counterpart. This allows for highly efficient estimation and inference algorithms with rich feature definitions. ...

    pdf6p hongdo_1 12-04-2013 40 2   Download

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