and forestry. To solve some of the problems in forestry and agriculture, the German Research Center for Artificial Intelligence and the Saarland Ministry of Economics founded the Cooperative Agents and Integrated Services for Logistic and Electronic Trading in Forestry and Agriculture (Casa) project. The Casa project focuses on developing an agentbased information and trading network (ITN). In ...

Software applications executing in highly dynamic environments are faced with the challenge of frequent and usually unpredictable changes in their execution environment. In order to cope with this challenge effectively, the applications need to adapt to these changes dynamically. CASA (Contract-based Adaptive Software Architecture) provides a framework for enabling dynamic adaptation of applica...

Information extraction (IE) is an important problem for information integration with broad applications. It is an attractive application for machine learning. The core of this problem is to learn extraction rules from given input. This paper extends a pattern discovery approach called IEPAD to the rapid generation of information extractors that can extract structured data from semi-structuredWe...

the mobility and bioavailability of trace elements in the agricultural soils are extremely important in assessing the risk of toxicity to the growing plants. a five step sequential extraction procedure (sep) has been employed to study the speciation of as, sb, cr, cu, cd, pb, zn, ni, fe and mn in 18 soil samples neighboring an industrial complex in isfahan, central iran. enrichment factor (ef) ...

This paper reports the preliminary results of experiments on listening to several sounds at once. Two issues are addressed: segregating speech streams from a mixture of sounds, and interfacing speech stream segregation with automatic speech recognition (ASR). Speech stream segregation (SSS) is modeled as a process of extracting harmonic fragments, grouping these extracted harmonic fragments, an...

JIAC IV is a generic agent toolkit with an emphasis on the realisation of applications in the areas of telecommunications and electronic commerce. We motivate the need for open, scalable, and flexible systems and hence the advantages of agent technology in these areas. Then, we describe the basic architectural principles of CASA, which builds the structural and functional base of agents in JIAC...