Michael C. Tanner

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The problem of abduction can be characterized as nding the best explanation of a set of data. In this paper we focus on one type of abduction in which the best explanation is the most plausible combination of hypotheses that explains all the data. We then present several computational complexity results demonstrating that this type of abduction is(More)
In the following report, we describe a new shell for building abductive problem solving agents. This shell, called Peirce-IGTT1, can be used in conjunction with other problem solving tools constructed at the Laboratory for Arti cial Intelligence Research at The Ohio State University in order to build large knowledgebased systems. Peirce itself is a tool for(More)
T h e p rob lem of f inding a best exp lana t ion of a set of da ta has been a top ic of m u c h interest in A r t i f i c i a l I n t e l l i gence. In th is paper we present an approach to th is p r o b l e m by hypothesis assembly. We present th is approach f o rma l l y so tha t we can examine the t ime comp lex i t y and correctness of the a lgo r i t(More)
INTRODUCTION Only in recent years has balloon kyphoplasty gained significance in the treatment of vertebral fractures as an adequate minimally invasive vertebral stabilization technique. Kyphoplasty has also increasingly been used to treat vertebral osteolyses caused by multiple myeloma (MM). PATIENTS AND METHODS In our cohort of 76 patients with MM with(More)
For a number of years, a group of us have been concerned with the development of knowledge-level frameworks for the construction of expert systems. We have emphasized analysis at the level of the tasks, what characterizes the goals that need to be achieved, what kinds of methods are useful for achieving them, and what kinds of knowledge are needed to(More)
BACKGROUND This retrospective study of 73 myeloma patients with painful vertebral lesions compares clinical and radiomorphological outcomes up to 2 years after additional kyphoplasty, radiation therapy or systemic treatment only. METHODS We assessed pain, disability and radiomorphological parameters by visual analogue scale (VAS 0-100), Oswestry(More)