Ashok Srivastava

Member since: Jan 05, 2014, Verizon

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  • Comparison of Unsupervised Anomaly Detection Methods

    A Publication, Ashok Srivastava's Collection - 7 years, 2 months ago

    Shared By: Ashok Srivastava

    Several different unsupervised anomaly detection algorithms have been applied to Space Shuttle Main Engine (SSME) data to serve the purpose of developing a comprehensive suite ...

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  • Comparative Analysis of Data-Driven Anomaly Detection Methods

    A Publication, Ashok Srivastava's Collection - 7 years, 2 months ago

    Shared By: Ashok Srivastava

    This paper provides a review of three different advanced machine learning algorithms for anomaly detection in continuous data streams from a ground-test firing of a ...

    meatball
  • Novel Methods for Predicting Photometric Redshifts

    A Publication, Ashok Srivastava's Collection - 7 years, 2 months ago

    Shared By: Ashok Srivastava

    We calculate photometric redshifts from the Sloan Digital Sky Survey Main Galaxy Sample, The Galaxy Evolution Explorer All Sky Survey, and The Two Micron All ...

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  • Algorithms for Spectral Decomposition with Applications

    A Publication, Ashok Srivastava's Collection - 7 years, 2 months ago

    Shared By: Ashok Srivastava

    The analysis of spectral signals for features that represent physical phenomenon is ubiquitous in the science and engineering communities. There are two main approaches that ...

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  • Detection and Prognostics on Low Dimensional Systems

    A Publication, Ashok Srivastava's Collection - 7 years, 2 months ago

    Shared By: Ashok Srivastava

    This paper describes the application of known and novel prognostic algorithms on systems that can be described by low dimensional, potentially nonlinear dynamics. The methods ...

    meatball
  • Anomaly Detection and Diagnosis Algorithms for Discrete Symbols

    A Publication, Ashok Srivastava's Collection - 7 years, 2 months ago

    Shared By: Ashok Srivastava

    We present a set of novel algorithms which we call sequenceMiner that detect and characterize anomalies in large sets of high-dimensional symbol sequences that arise ...

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  • Discovering System Health Anomalies using Data Mining Techniques

    A Publication, Ashok Srivastava's Collection - 7 years, 2 months ago

    Shared By: Ashok Srivastava

    We discuss a statistical framework that underlies envelope detection schemes as well as dynamical models based on Hidden Markov Models (HMM) that can encompass both ...

    meatball
  • stableGP

    An Algorithm, Ashok Srivastava's Collection - 7 years, 2 months ago

    Shared By: Ashok Srivastava

    The code in the stableGP package implements Gaussian process calculations using efficient and numerically stable algorithms. Description of the algorithms is in the paper "Stable ...

    meatball
  • Mixture Density Mercer Kernels

    An Algorithm, Ashok Srivastava's Collection - 7 years, 2 months ago

    Shared By: Ashok Srivastava

    We present a method of generating Mercer Kernels from an ensemble of probabilistic mixture models, where each mixture model is generated from a Bayesian mixture ...

  • Discovering Precursors to Aviation Safety Incidents: KDD 2010

    Other, Ashok Srivastava's Collection - 7 years, 2 months ago

    Shared By: Ashok Srivastava

    Modern aircraft are producing data at an unprecedented rate with hundreds of parameters being recorded on a second by second basis. The data can be ...

Ashok's Projects (16)

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