Areas of interests include

• Multivariate Time Series Analysis
  Similarity Search for Multivariate Time Series.
  Indexing Multivariate Time Series for Similarity Search.
• Machine Learning
  Support Vector Machine
• Wavelets
  Wavelet Covariance, Wavelet Variance

fMRI

• Learning to Decode Cognitive States from Brain Images (2004)
• Cognitive states classification from FMRI data using support vector machines (2004)
• Classifying Instantaneous Cognitive States from fMRI Data (2003)
• Group analysis in functional neuroimaging: selecting subjects using similarity measures (2003)
• Machine Learning of fMRI Virtual Sensors of Cognitive States (2002) alternate
• What is the best similarity measure for motion correction in fMRI time series? (2002)

Streams

• A Random Matrix-Based Approach for Dependency Detection from Data Streams(DMKD 2002)
• An Improved Data Stream Summary: The Count-Min Sketch and its Applications (Journal of Algorithms, 2004)

Multivariate Time Series Analysis

Supervised Principal Components

• Prediction by supervised principal components (R)
• Supervised-PCA and SVM classifiers for object detection in infrared images
• Supervised principal component analysis using a smooth classifier paradigm
• Input Feature Extraction for Multilayered Perceptrons Using Supervised Principal Component Analysis

Multiway Analysis

• Various Tools for Multiway Analysis, e.g., PARAFAC
• PTSk: Principal Tensor Analysis on k modes
• Chemometrics course by Karl Booksh at ASU

Similarity Search for Multivariate Time Series

• Between-Groups Comparison of Principal Components (PCA) Corrigenda
  
• Discovering Similar Multidimensional Trajectories (LCSS)
  

Indexing

• Index-driven similarity search in metric spaces (TODS, 2003)
• An Adaptive and Efficient Dimensionality Reduction Algorithm for High-Dimensional Indexing (ICDE 2003)
• Contorting High Dimensional Data for Efficient Main Memory KNN Processing (PCA) (SIGMOD 2003)
• eXtensible and fleXible Library (in Java)
• High-Dimensional Indexing: Transformational Approaches to High-Dimensional Range and Similarity Searches (Jan, 2002)
• Indexing the Distance: An Efficient Method to KNN Processing (2001) (iDistance)
• Similarity Search for Adaptive Ellipsoid Queries Using Spatial Transformation (2001)
• The A-tree: An Index Structure for High-Dimensional Spaces Using Relative Approximation (2000) source
• Indexing the Edges A simple and yet efficient approach to high-dimensional indexing (2000)
• Dynamic vp-tree indexing for n-nearest neighbor search given pair-wise distances (2000)
• A Quantitative Analysis and Performance Study for Similarity-Search Methods in High-Dimensional Spaces (1998) (VA-file)
• The SR-tree: An Index Structure for High-Dimensional Nearest Neighbor Queries (1997) source
• M-tree: An Efficient Access Method for Similarity Search in Metric Spaces (1997)
• Distance-based indexing for high-dimensional metric spaces (MVP-tree, 1997)
• Fast Time Sequence Indexing for Arbitrary Lp Norms
• Locally Adaptive Dimensionality Reduction for Indexing Large Time Series Databases (PCA)
  
• Exact Indexing of Dynamic Time Warping
• Indexing Multi-Dimensional Time-Series with Support for Multiple Distance Measures (LCSS)

Clustering

• Clustering of multivariate time-series data (PCA)
  
• WaveCluster: A Multi-Resolution Clustering Approach for Very Large Spatial Databases
  
• A Wavelet-Based Anytime Algorithm for K-Means Clustering of Time Series

Similarity Search for Univariate Time Series

• Finding Similar Time Series (LCSS)
• Efficient Similarity Search In Sequence Databases (FFT, F-index)
• Efficiently Supporting Ad Hoc Queries in Large Datasets of Time Sequences (SVD)
• Efficient Time Series Matching by Wavelets (DWT)
  A Comparison of DFT and DWT Based Similarity Search in Time-Series Databases
  Similarity search over time-series data using wavelets (various wavelet filters)
• Dynamic Time Warping(DTW)
  Performance tradeoffs in dynamic time warping algorithms for isolated word recognition
  

Feature Selection

• An Introduction To Variable and Feature Selection

Links

• UCI Machine Learning Repository
• UCI KDD Archive
• Atmospheric Sciences Data Center, NASA

Support Vector Machine

• Kernel Machines
• Kernel Methods for Pattern Analysis

Tools

• libsvm

Wavelets

• A survey on wavelet applications in data mining (2002)

Tutorials

• Brani Vidakovic's Wavelet Page where Wavelets for Kids (A tutorial written in December 1994) and other stuffs can be found.
• Wavelets in Multiresolution Analysis
• D. Zorin, J. Owens, "Introduction to Wavelets," http://www-graphics.stanford.edu/courses/cs448-97-fall/notes.html
• D. Zorin, J. Owens, "Introduction to Wavelets II," http://www-graphics.stanford.edu/courses/cs448-97-fall/notes.html
• Discrete Wavelet Transforms: Theory and Implementation

Tools

• Wavelab
• Uni Wave
• The MathWorks Wavelet Toolbox 2.2

Links

• Mathematical Methods and Algorithms for Signal Processing
• Wavelet Methods for Time Series Analysis
• Donald B. Percival Wavelet Covariance
• http://www.wavelet.org/wavelet/index.html - Wavelets newsletter
• http://www.amara.com/current/wavelet.html - Amara's Wavelets Page containing tutorials and many links
• http://cas.ensmp.fr/~chaplais/Wavetour_presentation/Wavetour_presentation_US.html - A Wavelet Tour of Signal Processing by Stephane Mallat
• http://www-graphics.stanford.edu/courses/cs448-97-fall/notes.html - Stanford course with lecture notes on computer graphics

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