data mining

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Data Mining and Machine Learning HMMs for Automatic Speech Recognition: Word and Sub-Word Level HMMs Peter Jančovič Slide 1 Data Mining and Machine Learning Content  Word level HMMs  Sub-word HMMs – Phoneme-level HMMs  Context-sensitive sub-word HMMs – Biphone HMMs – Triphone HMMs  Triphone HMM training issues  Phoneme Decision Trees (PDTs) […]

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Data Mining and Machine Learning Topic Analysis Peter Jančovič Slide 1 Data Mining and Machine Learning Objectives  Statistical modelling of topics  Identifying topics in a document – Latent Dirichlet Allocation (LDA)  Topic Spotting – Salience and Usefulness – Example: The AT&T “How May I Help You?” system Slide 2 Data Mining and

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Data Mining and Machine Learning Latent Semantic Analysis (LSA) Peter Jančovič Slide 1 Data Mining and Machine Learning Objectives  To understand, intuitively, how Latent Semantic Analysis (LSA) can discover latent topics in a corpus Slide 2 Data Mining and Machine Learning Vector Notation  The vector representation vec(d) of d is the V dimensional

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Data Mining and Machine Learning Application of HMMs for Automatic Speech Recognition – Introduction Peter Jančovič Slide 1 Data Mining and Machine Learning Objectives  Introduce automatic speech recognition  Understand why speech recognition is difficult – Continuity – Variability – Confusability – Effects of accent  Speech recognition terminology Slide 2 Data Mining and

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Data Mining and Machine Learning Lecture 5 Query Expansion Peter Jančovič Slide 1 Data Mining and Machine Learning Objectives  To understand how the use of semantic relationships between words can improve the performance of a text IR system – Query expansion – Generalisation – Synonyms, hypernyms & hyponyms – WordNet Slide 2 Data Mining

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Data Mining and Machine Learning HMM Training Peter Jančovič Slide 1 Data Mining and Machine Learning Objectives  Reminder: Maximum Likelihood (ML) parameter estimation – ML for Gaussian PDFs and for GMMs  ML for HMMs – Viterbi-style training – Baum-Welch algorithm Slide 2 Data Mining and Machine Learning Fitting a Gaussian PDF to Data

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程序代写代做代考 data mining Hidden Markov Mode Data Mining and Machine Learning

Data Mining and Machine Learning HMMs for Automatic Speech Recognition Peter Jančovič Slide 1 Data Mining and Machine Learning Objectives To understand  Application of HMMs for automatic speech recognition  HMM assumptions Slide 2 Data Mining and Machine Learning Pattern Recognition  Suppose we have a finite number of classes, w1,…,wC and the goal

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Data Mining and Machine Learning Speech Recognition using HTK Peter Jančovič Slide 1 Data Mining and Machine Learning Objectives  Building an ASR system using Hidden Markov Model Toolkit (HTK) – Feature Representation – Training – Recognition (Testing)  Introduction to Perl Slide 2 Data Mining and Machine Learning ASR system using HTK  Hidden

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Data Mining and Machine Learning Introduction to Data Mining, Vector Data Analysis and Principal Components Analysis (PCA) Slide 1 Data Mining and Machine Learning Objectives  To introduce Data Mining  To outline the techniques that we will study in this part of the course – a Data Mining ‘Toolkit’  To review basic data

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Data Mining and Machine Learning Lecture 3 Stopping, Stemming & TF-IDF Similarity Peter Jančovič Slide 1 Data Mining and Machine Learning Objectives  Understand definition and use of Stop Lists  Understand motivation and methods of Stemming  Understand how to calculate the TF-IDF Similarity between two documents Slide 2 Data Mining and Machine Learning

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