Centralised training and decentralised execution (CTDE) is one of the most effective approaches in multiagent reinforcement learning (MARL). However, these CTDE methods still require large amounts interaction with environment, even to reach same performance as very simple heuristic-based algorithms. Although modelbased RL a prominent approach improve sample efficiency, its adaptation multi-agen...

Based on social exchange theory, we examined and contrasted attitudinal mediators (affective organizational commitment, job satisfaction) and relational mediators (trust in leader, leader-member exchange; LMX) of the positive relationship between transformational leadership and organizational citizenship behavior (OCB). Hypotheses were tested using meta-analytic path models with correlations fr...

Regional healthcare initiatives seek to improve the quality of healthcare by collecting, analyzing, and disseminating information about chronic diseases such as diabetes. The data required to support such initiatives comes from several organizations such as insurers, physicians, hospitals, pharmacies and labs each of which gather and maintain data for the purpose of healthcare delivery. In this...

This paper demonstrates the identification of causal mechanisms in experiments with a binary treatment, (primarily) based on inverse probability weighting. I.e., we consider the average indirect effect of the treatment, which operates through an intermediate variable (or mediator) that is situated on the causal path between the treatment and the outcome, as well as the (unmediated) direct effec...

The inability of many clinical decision-support applications to integrate with existing databases limits the wide-scale deployment of such systems. To overcome this obstacle, we have designed a data-interpretation module that can be embedded in a general architecture for protocol-based reasoning and that can support the fundamental task of detecting temporal abstractions. We have developed this...

The amount of biological information accessible via the internet is growing at a tremendous rate. The biologists often encounter problems in accessing huge amount of widely spread data due to disparate formats, remotely dispersed and varying implementation on different platforms and data models. Besides that, the custom browsing and querying mechanism implemented in different data sources requi...

This paper addresses the problem of ensuring protection in the interoperation of heterogeneous data sources. We present a system that allows data sources enforcing mandatory multilevel policies to interoperate and make their data available to external applications still maintaining autonomy and security. Sources can be het-erogenous with respect to both the data model and the security lattices ...