A qualitative physics based on confluences
Artificial Intelligence - Special volume on qualitative reasoning about physical systems
Artificial Intelligence - Special volume on qualitative reasoning about physical systems
Qualitative reasoning about physical systems
Qualitative reasoning about physical systems
Artificial Intelligence
Artificial Intelligence
Readings in qualitative reasoning about physical systems
Readings in qualitative reasoning about physical systems
Problems of interval-based qualitative reasoning
Readings in qualitative reasoning about physical systems
Artificial Intelligence - Special issue: Qualitative reasoning about physical systems II
A theory of interactions: unifying qualitative and quantitative algebraic reasoning
Artificial Intelligence - Special issue: Qualitative reasoning about physical systems II
Mathematical problems arising in qualitative simulation of a differential equation
Artificial Intelligence
Qualitative reasoning: modeling and simulation with incomplete knowledge
Qualitative reasoning: modeling and simulation with incomplete knowledge
Artificial intelligence in perspective
Computational systems for qualitative economics
Computational Economics
Qualitative and quantitative simulation of interacting markets
Decision Support Systems
Controlling the complexity of investment decisions using qualitative reasoning techniques
Decision Support Systems
Market share analysis and prognosis using qualitative reasoning
Decision Support Systems
Enterprise decision support using intranet technology
Decision Support Systems
Qualitative and quantitative simulation: bridging the gap
Artificial Intelligence
The implementation of temporal intervals in qualitative simulation graphs
ACM Transactions on Modeling and Computer Simulation (TOMACS)
Qualitative Spatial Reasoning: Theory and Practice: Application to Robot Navigation
Qualitative Spatial Reasoning: Theory and Practice: Application to Robot Navigation
The Mathematical Bases for Qualitative Reasoning
IEEE Expert: Intelligent Systems and Their Applications
Real-World Applications of Qualitative Reasoning
IEEE Expert: Intelligent Systems and Their Applications
Using Qualitative Physics to Create Articulate Educational Software
IEEE Expert: Intelligent Systems and Their Applications
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The qualitative reasoning (QR) field has developed various representation and reasoning methods for the modeling with incomplete information or incomplete knowledge. While most uncertain reasoning approaches describe uncertain or imprecisely known information as probability distribution functions, qualitative reasoning bases its model specification on qualitative descriptions that are derived from known qualitative system properties. Problems are formulated as sets of qualitative constraints and their analysis is performed by applying a qualitative calculus. This paper presents a general, unifying theory of the various existing qualitative reasoning systems that includes, as special cases, reasoning methods that use representations of qualitative differential equations and qualitative difference equations. Based on set theory, our QR framework describes fundamental concepts such as qualitative models and solutions, and relates them to the quantitative analogues of its underlying quantitative reference system. Our motivation arises from the types of models found in the management sciences. Thus we emphasize the significance of discrete, dynamic models and optimization models in the business management and economics fields, both of which have received less attention in current QR research. Finally, we extend our theoretical framework to include an approach to qualitative optimization.