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Describe the final design of your interface. Illustrate with screenshots. Point out important design decisions and discuss the design alternatives that you considered. Particularly, discuss design decisions that were motivated by the three evaluations you did (paper prototyping, heuristic evaluation, and user testing).
Implementation
Client Side
Our user interface runs in-browser using Silverlight, and is implemented using C#. It uses Silverlight's layout system to organize the widgets, and is therefore resizable.
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With regards to our sentence segmentation code, we use a lexicon-based segmentation approach. Thus, if a user contributes a new sentence, then provided that the words are in the lexicon, the sentence will be properly segmented, and the sentence can be found by making any of those words it is segmented into the study focus. Because our lexicon is extremely large and comprehensive (several megabytes), then the words in a sentence are usually found in the lexicon, so the sentence is properly segmented. Additionally, this means that when a user contributes a sentence, he doesn't need to segment the sentence himself, or provide any tagging for the words - he simply inputs the sentence, and it is automatically segmented and annotated with its vocab words. However, this automatic lexicon-based segmentation and word extraction also prevents users from being able to use out-of-lexicon terms in their contributed sentences (they can use them, but they will not be annotated with that vocab word).Server Side
The server-side code is a set of ASP.NET scripts which communicate with a MySQL database instance.
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