background and purpose:     methods     results:     conclusion:

information on water quality and pollution sources is important for the implementation of sustainable water resource management strategies. in this research, to evaluate spatial variation and the interpretation of large complex water quality data taken at seven different sites along the gorganrood river were subjected to multivariate statistical analysis. the factor analysis generated two signi...

Online Social Networks have recently become extremely popular and generate a huge volume of spontaneous data. Knowing demographics of these users can provide useful information (e.g. marketing campaign segmentation). Unlike most approaches, we propose the use of Ecological Inference for understanding demographics of groups of people. Our results show that it is possible to infer gender and age ...

The growth of the Internet has revitalised research on the integration of heterogeneous information sources. Integration efforts face a trade off between interoperability and heterogeneity. Important integration obstacles arise from the differences in the underlying ontologies of the various sources. In this paper we investigate the impediments to integration, focussing on ontologies. In partic...