312,436 research outputs found
Automated Mapping of UML Activity Diagrams to Formal Specifications for Supporting Containment Checking
Business analysts and domain experts are often sketching the behaviors of a
software system using high-level models that are technology- and
platform-independent. The developers will refine and enrich these high-level
models with technical details. As a consequence, the refined models can deviate
from the original models over time, especially when the two kinds of models
evolve independently. In this context, we focus on behavior models; that is, we
aim to ensure that the refined, low-level behavior models conform to the
corresponding high-level behavior models. Based on existing formal verification
techniques, we propose containment checking as a means to assess whether the
system's behaviors described by the low-level models satisfy what has been
specified in the high-level counterparts. One of the major obstacles is how to
lessen the burden of creating formal specifications of the behavior models as
well as consistency constraints, which is a tedious and error-prone task when
done manually. Our approach presented in this paper aims at alleviating the
aforementioned challenges by considering the behavior models as verification
inputs and devising automated mappings of behavior models onto formal
properties and descriptions that can be directly used by model checkers. We
discuss various challenges in our approach and show the applicability of our
approach in illustrative scenarios.Comment: In Proceedings FESCA 2014, arXiv:1404.043
Evaluation of the arrangements to assure the consistency of teacher assessment in the core subjects at key stage 2 and key stage 3
"This report is published in response to the annual Ministerial remit to Estyn for 2009-2010. It contains an evaluation of the arrangements to assure the consistency
of teacher assessment in the core subjects in key stage 2 (KS2) and key stage 3 (KS3)." - introduction
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