Many tutors offer students reference material or tips that they can access as needed. We have logged data about student use of references with Deep Thought logic tutor which to understand why and how references are used. We find evidence that students use these references in systematic ways that change over the course of the tutor, and can be predictive of rule application errors. We can use th...

In this paper, we propose a series of correlation-based feature selection methods for dealing with high dimensionality in feature-rich environments for modelbased Reinforcement Learning (RL). Real world RL tasks usually involve highdimensional feature spaces where standard RL methods often perform badly. Our proposed approach adopts correlation among state features as a selection criterion. The...

Background: the need to develop methods for early diagnostics and preventive interventions in individuals at clinical high-risk state schizophrenia requires studying characteristics of specific symptoms pre-onset stages. One such may be thought disorder, which still have an ambiguous position psychopathological structure schizophrenia. Aim: correlation analysis disorders patients with first dep...

Thrombosis is a leading cause of morbidity and mortality, not only in aging industrialized countries, but also many emerging economies1.