Search Results for author: Ross D. Shachter

Found 13 papers, 0 papers with code

Approximate Kalman Filter Q-Learning for Continuous State-Space MDPs

no code implementations26 Sep 2013 Charles Tripp, Ross D. Shachter

We seek to learn an effective policy for a Markov Decision Process (MDP) with continuous states via Q-Learning.

Q-Learning

Evidence Absorption and Propagation through Evidence Reversals

no code implementations27 Mar 2013 Ross D. Shachter

The arc reversal/node reduction approach to probabilistic inference is extended to include the case of instantiated evidence by an operation called "evidence reversal."

Efficient Inference on Generalized Fault Diagrams

no code implementations27 Mar 2013 Ross D. Shachter, Leonard Bertrand

The generalized fault diagram, a data structure for failure analysis based on the influence diagram, is defined.

DAVID: Influence Diagram Processing System for the Macintosh

no code implementations27 Mar 2013 Ross D. Shachter

Influence diagrams are a directed graph representation for uncertainties as probabilities.

Intelligent Probabilistic Inference

no code implementations27 Mar 2013 Ross D. Shachter

This paper extends those results by developing a theory of the properties of the diagram that are used by the algorithm, and the information needed to solve arbitrary probability inference problems.

Decision Making

A Heuristic Bayesian Approach to Knowledge Acquisition: Application to Analysis of Tissue-Type Plasminogen Activator

no code implementations27 Mar 2013 Ross D. Shachter, David M. Eddy, Vic Hasselblad, Robert Wolpert

This paper describes a heuristic Bayesian method for computing probability distributions from experimental data, based upon the multivariate normal form of the influence diagram.

Simulation Approaches to General Probabilistic Inference on Belief Networks

no code implementations27 Mar 2013 Ross D. Shachter, Mark Alan Peot

A number of algorithms have been developed to solve probabilistic inference problems on belief networks.

A Linear Approximation Method for Probabilistic Inference

no code implementations27 Mar 2013 Ross D. Shachter

An approximation method is presented for probabilistic inference with continuous random variables.

A Backwards View for Assessment

no code implementations27 Mar 2013 Ross D. Shachter, David Heckerman

Much artificial intelligence research focuses on the problem of deducing the validity of unobservable propositions or hypotheses from observable evidence.!

Directed Reduction Algorithms and Decomposable Graphs

no code implementations27 Mar 2013 Ross D. Shachter, Stig K. Andersen, Kim-Leng Poh

In recent years, there have been intense research efforts to develop efficient methods for probabilistic inference in probabilistic influence diagrams or belief networks.

Laplace's Method Approximations for Probabilistic Inference in Belief Networks with Continuous Variables

no code implementations27 Feb 2013 Adriano Azevedo-Filho, Ross D. Shachter

Laplace's method, a family of asymptotic methods used to approximate integrals, is presented as a potential candidate for the tool box of techniques used for knowledge acquisition and probabilistic inference in belief networks with continuous variables.

Model Selection

A Decision-Based View of Causality

no code implementations27 Feb 2013 David Heckerman, Ross D. Shachter

Using this definition, we show how causal dependence can be represented within an influence diagram.

Decision Making

A Definition and Graphical Representation for Causality

no code implementations20 Feb 2013 David Heckerman, Ross D. Shachter

We present a precise definition of cause and effect in terms of a fundamental notion called unresponsiveness.

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