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Großekathöfer, Ulf: Ordered Means Models for recognition, reproduction, and organization of interaction time series. 2013
Inhalt
Contents
Introduction
Recognition, Reproduction, and Organization of Interaction Time Series
Research Objectives and Research Questions
Document Structure
Background: Machine Learning of Time Series
Machine Learning
Alignment Methods for Time Series Data
Dynamic Time Warping
Hidden Markov Models
Ordered Means Models
Classification
Bayes Classifier
Nearest Neighbor Classifier
Support Vector Machines
Clustering
K-means
K-trees
Application in Interaction Scenarios
Recognition
Reproduction
Organization
Performance Measures
Classification
Generalization Error
Receiver Operating Characteristic
Clustering
Summary
Theory and Definition of Ordered Means Models
Model Design
Sequence Length Distribution in OMMs
State Duration Probabilities in OMMs
Parameter Estimation
Efficient Computation of Production Likelihoods and Responsibilities
Influence of the Standard Deviation Parameter
Numerical Aspects
Computation in Log Space
Scaling of Probabilities
Relation to Hidden Markov Models
Summary
Experiments: Methods, Data Sets, and Application
Methods
Recognition
Organization
Prototype Property
Hyperparameter Selection
N-Fold Cross Validation
Initialization of OMMs and HMMs
Data Pre-Processing
Application in Experiments
Overview of Data Sets
Summary
Recognition of Interaction Time Series Data with OMMs
Classification with Ordered Means Models
Incremental Classification of Time Series with OMMs
Adaptive Learning
Low Latency Recognition of Interaction Time Series
Data Sets
Experiments
Results and Discussion
Robust Recognition: Incomplete Data
Data Set
Experiments
Results and Discussion
Robust Recognition: Influence of Transition Probabilities
Data Sets
Experiments
Results and Discussion
Scenario: Conversational Head Gestures
Data Set
Experiments
Results and Discussion
Scenario: Finger Pressure Patterns in Playing Musical Instruments
Data Set
Experiments
Results and Discussion
Incremental Recognition and Adaptive Learning
Data Set
Experiments
Results and Discussion
Summary
Reproduction of Interaction Time Series Data with OMMs
Definition: Prototype
Mouse Gestures
Data Set
Experiments
Results and Discussion
Scenario: Gesture Imitation for Virtual Agents
Data Set
Experiments
Results
Summary
Organization of Interaction Time Series Data with OMMs
Methods: Clustering of Time Series Data with OMMs
Partitioning Clustering: K-OMMs
Hierarchical Clustering: K-OMM-trees
Experiment: Partitioning of Time Series Data
Experiments
Results and Discussion
Experiments: Hierarchical Organization with K-OMM-trees
Experiments
Results and Discussion
Scenario: Gesture Recognition with K-OMM-trees
Data Set
Experiments
Results and Discussion
Summary
Conclusion
Contributions: Algorithms
Contributions: Empirical Data Analysis
Future Work
Expectation Maximization Algorithm
pyOMM: An OMM Package for the Python Programming Language
Installation Instructions
How to use pyOMM
pyKTree: A Python Implementation of the K-tree Algorithm
Installation Instructions
How to use pyKTrees
Bibliography