Tools for modelling support and construction of optimization applications

We argue the case for an open systems approach towards modelling and application support. We discuss how the 'usability' and 'skills' analysis naturally leads to a viable strategy for integrating application construction with modelling tools and optimizers. The role of the implementation environment is also seen to be critical in that it is retained as a building block within the resulting system

Knowledge modelling with the open source tool myCBR

Building knowledge intensive Case-Based Reasoning applications requires tools that support this on-going process between domain experts and knowledge engineers. In this paper we will introduce how the open source tool myCBR 3 allows for flexible knowledge elicitation and formalisation form CBR and non CBR experts. We detail on myCBR 3 's versatile approach to similarity modelling and will give an overview of the Knowledge Engineering workbench, providing the tools for the modelling process. We underline our presentation with three case studies of knowledge modelling for technical diagnosis and recommendation systems using myCBR 3

BigraphER: rewriting and analysis engine for bigraphs

BigraphER is a suite of open-source tools providing an effi- cient implementation of rewriting, simulation, and visualisation for bigraphs, a universal formalism for modelling interacting systems that evolve in time and space and first introduced by Milner. BigraphER consists of an OCaml library that provides programming interfaces for the manipulation of bigraphs, their constituents and reaction rules, and a command-line tool capable of simulating Bigraphical Reactive Systems (BRSs) and computing their transition systems. Other features are native support for both bigraphs and bigraphs with sharing, stochastic reaction rules, rule priorities, instantiation maps, parameterised controls, predicate checking, graphical output and integration with the probabilistic model checker PRISM

A software service supporting software quality forecasting

Software repositories such as source control, defect tracking systems and project management tools, are used to support the progress of software projects. The exploitation of such data with techniques like forecasting is becoming an increasing need in several domains to support decision-making processes. However, although there exist several statistical tools and languages supporting forecasting, there is a lack of friendly approaches that enable practitioners to exploit the advantages of creating and using such models in their dashboard tools. Therefore, we have developed a modular and flexible forecasting service allowing the interconnection with different kinds of databases/data repositories for creating and exploiting forecasting models based on methods like ARIMA or ETS. The service is open source software, has been developed in Java and R and exposes its functionalities through a REST API. Architecture details are provided, along with functionalities’ description and an example of its use for software quality forecasting.Peer ReviewedPostprint (author's final draft

Towards the realisation of an integratated decision support environment for organisational decision making

Traditional decision support systems are based on the paradigm of a single decision maker working at a stand‐alone computer or terminal who has a specific decision to make with a specific goal in mind. Organizational decision support systems aim to support decision makers at all levels of an organization (from executive, middle management managers to operators), who have a variety of decisions to make, with different priorities, often in a distributed and dynamic environment. Such systems need to be designed and developed with extra functionality to meet the challenges such as collaborative working. This paper proposes an Integrated Decision Support Environment (IDSE) for organizational decision making. The IDSE distinguishes itself from traditional decision support systems in that it can flexibly configure and re‐configure its functions to support various decision applications. IDSE is an open software platform which allows its users to define their own decision processes and choose their own exiting decision tools to be integrated into the platform. The IDSE is designed and developed based on distributed client/server networking, with a multi‐tier integration framework for consistent information exchange and sharing, seamless process co‐ordination and synchronisation, and quick access to packaged and legacy systems. The prototype of the IDSE demonstrates good performance in agile response to fast changing decision situations

Repurposing resources as open content: studying the experiences of new providers

Much educational content sits within institutional systems protected from global access, this proprietary approach restricts opportunities for informal learning and the exchange of materials between cultures. One response to reducing this particular digital divide is to open up access to existing courses by providing them as free to use Open Educational Resources (OERs). This is being addressed through work on OpenLearn (the open content initiative from The Open University developed with support from the William and Flora Hewlett Foundation) and POCKET (The Project on Open Content for Knowledge Exposition and Teaching, supported by JISC under the repositories and preservation programme). The approach is evaluative considering transfer of lessons from work on the reworking of distance learning materials (within the OpenLearn initiative) to the reworking of material from campus-based universities (supported by the POCKET project). Analysis will include the role of supporting artifacts (guidelines, examples, tools) and the process support required (shared aims, workshops, structure). Evaluation tools that are being applied include logging of experience, stake holder interviews, and analytics data. We are building on existing evaluation of the OpenLearn initiative that has revealed models for learner use of open educational resources and studied the reuse of released open resources. Results include the need for a range of reworkable formats, support and time pressures on voluntary use – these results are supported by case study information and overall usage statistics. Further data that will be available from POCKET by September 2008 will include reflections from participants, workshop outcomes and initial stakeholder interviews, full evaluation of POCKET will be complete by April 2009. This paper will have examined our understanding of the process by which content can be transformed from existing learning materials to freely available open educational resources. Conclusions at this stage will focus on the process of adoption and transfer from OpenLearn and the effectiveness of the evaluation and project approach. Comparison will be made with the advantages and disadvantages of the self supported approach adopted initially in OpenLearn and suggestions given for structures that enable collaboration in producing open educational resources