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Introduction to machine learning

  Trí tuệ nhân tạo  - Introduction to Machine Learning

Trí tuệ nhân tạo - Introduction to Machine Learning

... redesign of AI systems to conform to new knowledge is impractical, but machine learning methods might be able to track much of it 1.1.2 Wellsprings of Machine Learning Work in machine learning is now ... reinforcement learning can be traced to e orts to model how reward stimuli in uence the learning of goal-seeking behavior in animals Sutton & Barto, 1987] Reinforcement learning is an important theme in machine ... Class terms 3n clauses 3n O(kn) k-term DNF k-clause CNF 2O(kn) k-DNF 2O(nk) k-CNF 2O(nk) k-DL 2O nk k log(n)] lin sep 2O(n2) DNF 22n Introduction to Machine Learning c 1996 Nils J Nilsson All...
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Introduction to machine learning www kho sach blogspot com

Introduction to machine learning www kho sach blogspot com

... redesign of AI systems to conform to new knowledge is impractical, but machine learning methods might be able to track much of it 1.1.2 Wellsprings of Machine Learning Work in machine learning is now ... Preliminaries 1.1 Introduction : : : : : : : : : : : : : : : : 1.1.1 What is Machine Learning? : : : 1.1.2 Wellsprings of Machine Learning 1.1.3 Varieties of Machine Learning : : 1.2 Learning Input-Output ... reinforcement learning can be traced to e orts to model how reward stimuli in uence the learning of goal-seeking behavior in animals Sutton & Barto, 1987] Reinforcement learning is an important theme in machine...
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the boosting approach to machine learning- an overview (2002) - schapire02boosting

the boosting approach to machine learning- an overview (2002) - schapire02boosting

... for instance, refs [6, 76] for its definition and relation to learning theory , here used rather informally, is meant to hide all logarithmic and The “soft-Oh” notation constant factors (in the same ... In addition, the margin theory points to a strong connection between boosting and the support-vector machines of Vapnik and others [7, 14, 77] which explicitly attempt to maximize the minimum ... Schuurmans [37] and Breiman [9]) In classical game theory, it is possible to put any two-person, zero-sum game in the form of a matrix To play the game, one player chooses a row and the other player...
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the boosting approach to machine learning

the boosting approach to machine learning

... margin theory points to a strong connection between boosting and the support-vector machines of Vapnik and others [7, 14, 77] which explicitly attempt to maximize the minimum margin A connection to ... classical game theory, it is possible to put any two-person, zero-sum game in the form of a matrix To play the game, one player chooses a row and the other player chooses a column The loss to the row ... relative entropy The first term is the same as that in Eq (10) The second term gives a measure of the distance from the model built by boosting to the human’s model Thus, we balance the conditional...
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Tài liệu Báo cáo khoa học:

Tài liệu Báo cáo khoa học: "Machine Learning for Coreference Resolution: From Local Classification to Global Ranking" ppt

... A Ranking Approach to Coreference     ¡ As mentioned before, our approach differs from the standard approach primarily by (1) explicitly learning a ranker and (2) optimizing for clustering-level ... learning approach, outperforming them by as much as 4–7% on the three data sets for one of the performance metrics 3.1 Selecting Coreference Systems A learning- based coreference system can be ... trees for coreference resolution In Proc of the IJCAI, pages 1050–1055 T Morton 2000 Coreference for NLP applications In Proc of the ACL C M¨ uller, S Rapp, and M Strube 2002 Applying cotraining to...
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Báo cáo khoa học:

Báo cáo khoa học: "Paraphrase Recognition Using Machine Learning to Combine Similarity Measures" ppt

... similarity measures Finally, we locate the s1 with the best average similarity (over all similarity measures) to s2 , namely s1∗ : 10 S2 : Fewer than a dozen FBI agents will be sent to Iraq to ... + DEP uses additional features that measure grammatical relation similarity Supervised machine learning is used to learn how to combine the resulting features We experimented with a Maximum Entropy ... measure similar to BLEU The produced vectors are then used to train a decision tree classifier Hence, Zhang and Patrick’s approach is similar to ours, but we use more and different similarity measures...
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Báo cáo khoa học:

Báo cáo khoa học: "Using Machine-Learning to Assign Function Labels to Parser Output for Spanish" ppt

... learning to perform various graph transformations One of the transformations is node relabelling, which adds function tags to parser output They report an fscore of 88.5% for the task of function ... 3.2 Adding Function Tags to Parser Output 4.1 The solution we adopt instead is to add Cast3LB functional tags to simple constituent trees output by the parser, as a postprocessing step For English, ... typically absent in output generated by probabilistic parsers In order to solve this difficulty, O’Donovan et al (2005) train Bikel’s parser to output complex category -function labels A complex label...
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WBI LEARNING RESOURCES SERIES: Beyond Economic Growth An Introduction to Sustainable Development An Introduction to Sustainable Development ppt

WBI LEARNING RESOURCES SERIES: Beyond Economic Growth An Introduction to Sustainable Development An Introduction to Sustainable Development ppt

... development with slow human development and rapid growth to a virtuous circle in which human development and growth can become mutually reinforcing.” Since slower human development has invariably ... specializing in social and humanitarian studies Thanks to the rich history of this book, the author has had many opportunities to receive feedback from students and educators in many countries, developed ... According to the Human Development Report 1996, published by the United Nations Development Program, “human development is the end economic growth a means.” It is true that economic growth, by...
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Báo cáo khoa học:

Báo cáo khoa học: "Using Emoticons to reduce Dependency in Machine Learning Techniques for Sentiment Classification" pot

... Dependencies in Sentiment Classification Experimental Setup In this section, we describe experiments we have carried out to determine the in uence of domain, topic and time on machine learning based sentiment ... negative sentiment (selected by independent trained annotators), each containing 100 stories We trained a model on a dataset relating to one topic and tested that model using the other topics Figure ... Domain dependency in sentiment classification Figure 1: Topic dependency in sentiment classification Ac- Accuracies, in percent Best performance on a test set for each model is highlighted in bold...
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Báo cáo khoa học:

Báo cáo khoa học: "A Machine Learning Approach to German Pronoun Resolution" docx

... reported F-measure for pronoun resolution is 81.5 However, (Morton, 2000) only attempts to resolve singular pronouns, and there is no mention of what percentage of total pronouns are covered by ... recogniser for German, we were able to obtain the system submitted by (Curran and Clark, 2003) to the 2003 CoNLL competition In order to run the recogniser, the data needs to be tokenised, tagged ... For pronouns, the reported results are 74.6 and 57.8, respectively The experiment presented in (Strube et al., 2002) is one of the few dealing with the application of machine learning to German...
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Báo cáo khoa học:

Báo cáo khoa học: " Improving Machine Learning Approaches to Coreference Resolution" potx

... investigate two methods to improve existing machine learning approaches to the problem of Soon et al (2001) present only the tree learned for the MUC-6 data set noun phrase coreference resolution ... performance of Soon’s learning- based coreference resolution approach from an F-measure of 62.6 to 70.4, and from 60.4 to 63.4 for the MUC-6 and MUC-7 data sets, respectively To our knowledge, these ... studies the effect of three changes to the general machine learning framework employed by Soon et al with the goal of improving precision in the resulting coreference resolution systems Best-first...
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