In large-scaled software development projects, different stakeholders may deal with different pieces
of software requirements depending on their perspectives or perceptions of their shared problems.
Each of the users may define his/her requirements from his/her own point of view using different
terminologies. System analysts may express or model the artifacts of the system by using different
representation styles and methodologies. However, a group of stakeholders often needs to interact,
collaborate or trace requirements among the group in order to achieve common goals in their
development process.

To resolve the semantic heterogeneity problems arising from requirements tracing among various
stakeholders, the enhancement of multiperspective requirements traceability (MUPRET) framework is
proposed. The main objective of this paper is to concentrate on tracing multiperspective requirements
artifacts represented in the form of the textual requirements and the requirements model, specifically
the entity relationship diagram. The requirements ontology is used as a knowledge representation to
represent multiperspective requirements artifacts of an individual stakeholder. Ontology matching is
applied as a reasoning mechanism in automatically generating traceability relationships without
restricting the freedom in expressing requirements differently.

Namfon Assawamekin
School of Science and Technology, University of the Thai Chamber of Commerce,
Bangkok 10400, THAILAND
E-mail: namfon_ass@utcc.ac.th, namfona@gmail.com