Usability and Reuse in software design

This is a very useful and informative extract from a usability conference presentation and examines how reusability can be provided in systems, the reference for this is below the post.

Degler (2006) asks the Questions –

"Have you had insights and observations that go beyond the scope of a particular system or site you are working on?

Have you seen the same user needs and challenges cropping up on three or four projects, and realized that you are seeing a pattern?

Have you worked on standards for design and development of web sites or information that need to be applied across many different projects and services?

Have you become involved in conversations with managers where you have the opportunity to share how "things could be better" for users overall, beyond the boundaries of a single site?"

This illustrates how to create and test a User Driven Modelling approach, the intention of this approach is to create a high level abstraction that can be reused to solve many problems with a common pattern.

Degler, D., 2006. The Usability Professional as Visionary / Strategist. In: UPA DC usability conference, October 2006. http://www.ipgems.com/present/degler_visiontalk_upadc2006.pdf.

Web Taxonomy Creation 2

To achieve the aims of Web Taxonomy Creation examined in my last post, a collaborative modelling approach is required. The literature on collaborative modelling is extensive. Huhns [1] and Paternò [2] both explain that alternatives to current software development approaches are required for ease of model creation. The need is to translate from a model-based visual representation understood by users to software. This makes it possible to engage with end-users and non-specialists in general. Johnson [3] explains that successful interaction requires mapping between levels of abstractions and that translation between these abstraction levels required by people and computers is difficult. Johnson explains that this problem often means systems are created that make users cope with the problems of mis-translation. The representation of rules and information can be illustrated diagrammatically and it is possible to describe algorithms through concrete examples rather than abstractly. Models must be designed and visualised so that they convey to users a representation of a problem that assists with their vision of it. This modelling approach is explored by Crapo et al [4] and is the basis of our visualisation techniques allowing the creation and understanding of taxonomies and models.

Scaffidi et al [5] show that most people who develop software are de-facto programmers lacking a formal computing background, this will often be the case for scientists and the public contributing to taxonomies. End-user programming is particularly important in this research as we are making software development accessible to non-experts. Research by Ko [6] explains the need for engagement of end-users, including non-specialists by providing them with the capability to interact and amend software. An e-science interactive environment is ideal for involving anyone interested in science to amend or produce personal content. The environment will benefit from an interactive e-learning approach influenced by 'Semantic Learning Webs' [7]. The capabilities we will provide over the web are similar, but more collaborative and advanced than provided by spreadsheets for modelling, and web editors for knowledge sharing. We will produce an alternative methodology for scientific modelling that hides the complexity of low-level programming code from users. This is a kind of meta-design, as explained by Fischer [8] that can be standardised to create a collaborative environment for sharing information among scientists. This builds on research we have undertaken to enable end-user programming. We will visualise scientific information and make this editable online. The system created must be judged accessible and user friendly by users. In addition, it must share information successfully with other software and people. So interoperability is extremely important, examples of interoperability research we will make use of are INTEROP [9] and MOMOCS [10], and combine this with a model driven approach. In order to achieve interoperability, the utilisation of open formats should be favoured in order to maximise chances of forward compatibility with evolving scientific models. We will also create or customise editing tools such as wikis [11][12], blogs, and Semantic Web editors [13] to document the models and collect user's feedback. We will visualise scientific information and make this available online.

Web Taxonomy Creation -

http://userdrivenmodelling.blogspot.com/2008/01/web-taxonomy-creation.html.

References

[1] Huhns M, 2001, Interaction-Oriented Software Development, Journal of Software Engineering and Knowledge Engineering.

[2] Paternò F, 2005, Model-based tools for pervasive usability, Interacting with Computers Vol 17(3), pp 291-315.

[3] Johnson P, 2004, Interactions, Collaborations and breakdowns, ACM International Conference Proceeding Series, 3rd annual conference on Task models and diagrams Vol 86.

[4] Crapo A W, Waisel L B, Wallace W A, Willemain T R, 2002, Visualization and Modelling for Intelligent Systems, Intelligent Systems: Technology and Applications, 1, pp 53-85.

[5] Scaffidi C, Shaw M, Myers B, 2005. Estimating the Numbers of End Users and End User Programmers. IEEE Symposium on Visual Languages and Human-Centric Computing, 21-24 September, Dallas, USA.

[6] Ko A J, 2007. Barriers to Successful End-User Programming. End-User Software Engineering Dagstuhl Seminar.

[7] Stutt A, Motta E, 2004. Semantic Learning Webs. Journal of Interactive Media in Education, 2004(10), Special Issue on the Educational Semantic Web.

[8] Fischer G, 2007. Meta-Design: A Conceptual Framework for End-User Software Engineering. End-User Software Engineering Dagstuhl Seminar.

[9] INTEROP -

http://interop-vlab.eu/newsletter/newsletter-nb02/

[10] MOMOCS - MOdel driven MOdernisation of Complex Systems -

http://www.viewzone.org/momocs/index.php?option=com_content&task=blogcategory&id=20&Itemid=17

[11] Hale P, 2007. Protégé Wiki

http://protege.cim3.net/cgi-bin/wiki.pl?UserDrivenProgramming

[Accessed 29 Nov 2007].

[12] Visual Knowledge, 2007. Semantic Wiki

http://www.visualknowledge.com [Accessed 29 Nov 2007].

[13] Quint V, Vatton I, 2005. Towards Active Web Clients. DocEng Bristol United.

Web Taxonomy Creation

An important contribution to Public Understanding of Science and for enabling of new insights would be creation of an online systematic representation of scientific information that gives a holistic view of related knowledge. This would reuse information and ideas provided by other researchers. These systems organise and visualise information. Letondal [1] of the Pasteur Institute provides a tool to generate web interfaces for molecular biology programs using an end-user programming approach. TreeBASE [2] is a relational database of phylogenetic information hosted by the Yale Peabody museum. Hughes [3] of the Computational Biology Unit (CBU) University of Bergen has investigated visualisation of phylogenetic trees and written an application that converts the NCBI (National Center for Biotechnology Information) [4] taxonomic data into a format that makes it possible to visualise the whole of the NCBI tree of life. Klyne [5] of the Image Bioinformatics Research Group, Zoology Department, Oxford University makes use of Semantic Web technology to build an image publication repository. UK Moths [6] online guide to the moths of Great Britain and Ireland illustrates the role of amateurs who send in pictures to be categorised. Mammals Family tree [7] provides an innovative way of visualising complex trees as a taxonomy on a wheel, this is a technique which could be developed as an interactive visualization. Fishbase [8] is a web accessible and searchable resource for accessing fish information by various categories. IHOP (Information hyperlinked over Proteins) by Hoffman [9] provides a gene network for navigating more than ten million abstracts in PubMed [4]. By using genes and proteins as hyperlinks between sentences and abstracts, this converts the information in PubMed into one navigable resource. Proviision of 3D hyperbolic representations of trees is investigates by Hughes et al [10]. This capability could be provided on the web using Semantic Web Technologies [11] [12] and this would enable others to edit and interact with these represenatations.

Web Taxonomy Creation - http://userdrivenmodelling.blogspot.com/2008/01/web-taxonomy-creation.html

References

[1] Letondal C. - http://www.pasteur.fr/~letondal/ - Pasteur Institute, Computing Center.
[2] TreeBASE - http://www.treebase.org/treebase/index.html - a Database of Phylogenetic Knowledge.
[3] Hughes T. Phylogenetic tree visualisation - Tim's Home Page - http://www.ii.uib.no/~tim/frontPages/treesPage.shtml.
[4] Wheeler DL, Chappey C, Lash AE, Leipe DD, Madden TL, Schuler GD, Tatusova TA, Rapp BA (2000). Database resources of the National Center for Biotechnology Information. Nucleic Acids Res 2000 Jan 1;28(1):10-4
[5] Klyne G, 2007, Building a Semantic Web accessible image publication repository - http://imageweb.zoo.ox.ac.uk/drupal/files/20071002-SWeb-applications.pdf - Image Bioinformatics Research Group - Zoology Department - Oxford University.
[6] UKMoths - http://www.ukmoths.org.uk/ - Welcome to UKMoths, your online guide to the moths of Great Britain and Ireland.
[7] Mammals family tree - Use zoom tool to see mammal details on the circle's edge - http://news.bbc.co.uk/1/hi/sci/tech/6503045.stm - BBC News Science - Mammal rise 'not linked' to dinos - PDF Family tree visualisation.
[8] Fishbase - http://www.fishbase.org/search.php.
[9] Hoffman R, Information hyperlinked over Proteins - http://www.ihop-net.org/UniPub/iHOP/ - A gene network for navigating the literature.
[10] Hughes T, Hyun Y and Liberles, 2004. Visualising very large phylogenetic trees in three dimensional hyperbolic space. DA. BMC Bioinformatics. BMC Bioinformatics Apr 29;5:48.
[11] Eklund P, Roberts N, Green S, 2002. OntoRama: Browsing RDF Ontologies using a Hyperbolic-style Browser, The First International Symposium on Cyber Worlds, CW02, Theory and Practices, IEEE Press. (2002) pp 405-411.
[12] Talis Engage - http://www.talis.com/engage/ - Community information at your fingertips - an online community information solution that allows citizens to organise, create and publish details of their events, organisations and groups.

Code Generation 2008 conference

Code Generation 2008 - http://www.codegeneration.net/conference/index.php - 25th-28th June 2008 - Cambridge, UK - A growing number of developers are using or planning to use model-based code generation - are you ready for the next evolutionary step in software? - WHO'S CG2008 FOR? - CG2008 is for software practitioners and those with a stake in the future of their development organisation.

Final Call for Speakers:
Submission Deadline: Friday January 18th 2008

We are seeking high-quality session proposals covering topics on
model-driven software development (including Software Factories,
Model-Driven Architecture (MDA), Domain-Specific Languages (DSLs),
Generative Programming, Software Product Lines and related areas).

Sessions could cover topics such as:
- Code Generation and Model Transformation tools and approaches
- Defining and implementing modelling languages
- Domain Analysis and Domain Engineering
- Language evolution and modularization
- Meta Modelling
- Runtime virtual machines versus direct code generation
- Tool and technology adoption

Real-world case studies based on any aspect of these and related
approaches are particularly encouraged although more theoretical
sessions are also welcome.

Accepted speakers have their conference fees waived. We will also be
offering a discount on conference fees to non-speaking academic
participants. More information will be available when the programme goes
online on 25th February.

Visit http://www.codegeneration.net/conference/index.php for more
details on the event or contact me for more information.

What people said about our previous conference - Code Generation 2007:

"I've been working in domain-specific modelling for a dozen years ...
and in this time this has been the highest-quality conference on this
topic that I've been to - and I've been to a few."

"The combined-for that matter, individual-expertise present was
remarkable, and presented a tremendous opportunity for knowledge exchange."

"The presentations were all top quality, making it often difficult to
decide between the concurrently running sessions. The wealth of MDD
knowledge present and the event was impressive, not only from the
presenters, but from the other delegates as well."

Best wishes for a happy and successful 2008.

I have an Events page at which has mainly computing and aerospace events listed and linked to - http://www.cems.uwe.ac.uk/~phale/Events.htm.