Accession Number : ADA509471


Title :   Adaptive Sensing and Fusion of Multi-Sensor Data and Historical Information


Descriptive Note : Final rept. 30 Mar 2007-6 Nov 2009


Corporate Author : SIGNAL INNOVATIONS GROUP INC DURHAM NC


Personal Author(s) : Carin, Lawrence


Full Text : https://apps.dtic.mil/dtic/tr/fulltext/u2/a509471.pdf


Report Date : 06 Nov 2009


Pagination or Media Count : 20


Abstract : Context plays an important role when performing underwater classification, and in this report we examine context from two perspectives. First, the classification of items within a single task is placed within the context of distinct concurrent or previous classification tasks (multiple distinct data collections). This is referred to as multi-task learning (MTL), and is implemented here in a statistical manner, using a simplified form of the Dirichlet process. In addition, when performing many classification tasks one has simultaneous access to all unlabeled data that must be classified, and therefore there is an opportunity to place the classification of any one feature vector within the context of all unlabeled feature vectors; this is referred to as semi-supervised learning. In this report we integrate MTL and semi-supervised learning into a single framework, thereby exploiting two forms of contextual information.


Descriptors :   *DATA ACQUISITION , DETECTION , CLASSIFICATION , UNDERWATER , ADAPTIVE SYSTEMS , DATA FUSION , LEARNING , ALGORITHMS


Subject Categories : Information Science


Distribution Statement : APPROVED FOR PUBLIC RELEASE