Uncertain databases are used in some fields to store both certain and uncertain data. When uncertainty is represented with the theory of belief functions, uncertain databases are assumed to be evidential. In this paper, we suggest a new method to quantify the source degree of dependence in order to enrich its evidential database by adding this dependence information. Enriching evidential databa...

Arguably, the most successful data structure for tabling is tries. However, while tries are very efficient for variant based tabled evaluation, they are limited in their ability to recognize and represent repeated answers for different calls. We propose a new design for the table space where all tabled subgoal calls and tabled answers are stored in a common global trie instead of being spread o...

Here, we describe the RISIS-SMS metadata system, developed to support the use of heterogeneous datasets in the field of Science, Technology and Innovation Studies (STIS). These data are partly within the RISIS infrastructure, but often elsewhere. The system has three aims: (i) to help researchers to search for and understand data that will help to answer specific research questions, without hav...

This article presents the logic, methods, and capabilities of a major new source of data on the Medicare population, the Medicare Current Beneficiary Survey (MCBS). The survey originated from the need to provide valid estimates of various kinds of health care spending, such as long-term care spending or expenditures by different age groups, to describe the effects of the Medicare program on its...