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**1 - 2**of**2**### A Formal Model of Reliable Sensor Perception

"... Abstract. The safety of autonomously acting systems depends on a reliable assessment of the systems' context. We propose a framework to formalise and analyse both qualitative and quantitative measures of the context quality in terms of safety and precision. The measures are based on order-theo ..."

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Abstract. The safety of autonomously acting systems depends on a reliable assessment of the systems' context. We propose a framework to formalise and analyse both qualitative and quantitative measures of the context quality in terms of safety and precision. The measures are based on order-theoretic arguments by relating the ground truth (as given by the real environment) with the context information (as inferred by the sensors). We derive a hierarchy of qualitative notions that can serve as a high-level requirement description for the sensor and controller implementation of the system. The quantitative part of the framework then allows for an evaluation of a probabilistic variant of the sensor regarding its safety and precision. We in particular treat the analysis of sensor fusion based on evidence theory.

### Deciding under Partial Ignorance

, 1997

"... We study the problem of making decisions under partial ignorance, or partially quantified uncertainty. This problem arises in many applications in robotics and AI, and it has not yet got the attention it deserves. The traditional decision rules of decision under risk and under strict uncertainty (or ..."

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We study the problem of making decisions under partial ignorance, or partially quantified uncertainty. This problem arises in many applications in robotics and AI, and it has not yet got the attention it deserves. The traditional decision rules of decision under risk and under strict uncertainty (or complete ignorance) can naturally be extended to the more general case of decision under partial ignorance. We propose partial probability theory (PPT) for representing partial ignorance, and we discuss the extension to PPT of expected utility maximization. We argue that decision analysis should not be exclusively focused on optimizing but pay more serious attention to finding satisfactory actions, and to reasoning with assumptions. The extended minimax regret decision rule appears to be an important rule for satisficing. 1. Introduction In this paper, we study decision making in situations where the outcomes of the options are (in general) uncertain, without assuming that this uncertainty...