Modular Action Language ALM

The paper introduces a new modular action language, ALM, and illustrates the methodology of its use. It is based on the approach of Gelfond and Lifschitz (1993; 1998) in which a high-level action language is used as a front end for a logic programming system description. The resulting logic programming representation is used to perform various computational tasks. The methodology based on existing action languages works well for small and even medium size systems, but is not meant to deal with larger systems that require structuring of knowledge. ALM is meant to remedy this problem. Structuring of knowledge in ALM is supported by the concepts of module (a formal description of a specific piece of knowledge packaged as a unit), module hierarchy, and library, and by the division of a system description of ALM into two parts: theory and structure. A theory consists of one or more modules with a common theme, possibly organized into a module hierarchy based on a dependency relation. It contains declarations of sorts, attributes, and properties of the domain together with axioms describing them. Structures are used to describe the domain's objects. These features, together with the means for defining classes of a domain as special cases of previously defined ones, facilitate the stepwise development, testing, and readability of a knowledge base, as well as the creation of knowledge representation libraries. To appear in Theory and Practice of Logic Programming (TPLP).Comment: 65 pages, 7 figures. To appear in Theory and Practice of Logic Programming (TPLP

Representing Biological Processes in Modular Action Language ALM

This paper presents the formalization of a biological process, cell division, in modular action language ALM. We show how the features of ALM—modularity, separation between an uninterpreted theory and its interpretation—lead to a simple and elegant solution that can be used in answering questions from biology textbooks

Logical Formalizations of Commonsense Reasoning — Papers from the AAAI 2011 Spring Symposium (SS-11-06) Representing Biological Processes in Modular Action Language ALM

This paper presents the formalization of a biological process, cell division, in modular action language ALM. Weshow how the features of ALM—modularity, separation between an uninterpreted theory and its interpretation—lead to a simple and elegant solution that can be used in answering questions from biology textbooks