A statistical similarity measure for aggregate crowd dynamics
Abstract
We present an information-theoretic method to measure the similarity between a given set of observed, real-world data and visual simulation technique for aggregate crowd motions of a complex system consisting of many individual agents. This metric uses a two-step process to quantify a simulator's ability to reproduce the collective behaviors of the whole system, as observed in the recorded real-world data. First, Bayesian inference is used to estimate the simulation states which best correspond to the observed data, then a maximum likelihood estimator is used to approximate the prediction errors. This process is iterated using the EM-algorithm to produce a robust, statistical estimate of the magnitude of the prediction error as measured by its entropy (smaller is better). This metric serves as a simulator-to-data similarity measurement. We evaluated the metric in terms of robustness to sensor noise, consistency across different datasets and simulation methods, and correlation to perceptual metrics.
Document Details
- Document Type
- Pub Defense Publication
- Publication Date
- Nov 01, 2012
- Source ID
- 10.1145/2366145.2366209
Entities
People
- Dinesh Manocha
- Jur Van Den Berg
- Ming C. Lin
- Rynson Lau
- Stephen J. Guy
- Wenxi Liu
Organizations
- Army Research Office
- City University of Hong Kong
- National Science Foundation
- University of North Carolina at Chapel Hill
- University of Utah