This paper discusses LOLC, a text-based collaborative music improvisation system for laptop ensemble developed by the authors. The system is contextualized in terms of related work and the specific motivations and goals for the project, and its design and implementation are explained. The paper then evaluates LOLC in the context of a recent performance by professional classical musicians with m...

Clustering is a widely studied data mining problem in the text documents. The problem finds numerous applications in customer segmentation, classification, collaborative filtering, visualization, document organization, and indexing. In this paper, we will provide a detailed survey of the problem of text clustering. We will study the key challenges of the clustering problem, as it applies to the...

In order to better understand how software design choices may influence students’ collaborative learning, we conducted a study of the influence of tools for constructing representations of evidential models on collaborative learning processes and outcomes. Pairs of participants worked with one of three representations (matrix, graph, text) while investigating a complex public health problem. Fo...

Memory Based Collaborative Filtering is a widely used approach to provide recommendations. It exploits similarities between ratings across a population of users by forming a weighted vote to predict unobserved ratings. Bespoke solutions are frequently adopted to deal with the problem of high quality recommendations on large data sets. A disadvantage of this approach, however, is the loss of gen...

In this demo, we present a wiki-style platform – WikiBABEL – that enables easy collaborative creation of multilingual content in many nonEnglish Wikipedias, by leveraging the relatively larger and more stable content in the English Wikipedia. The platform provides an intuitive user interface that maintains the user focus on the multilingual Wikipedia content creation, by engaging search tools f...

Recommender systems have become, like search engines, a tool that cannot be ignored by a website with a large selection of products, music, news or simply webpages. The performance of this kind of systems depends on a large amount of information. Meanwhile, the amount of information available in the Web is continuously growing. In this paper, we propose to provide recommendation from unstructur...

We discuss the application of multimedia in scienti c design, and describe a multi-user distributed and collaborative scienti c manipulation environment, Shastra, implemented on the multimedia desktop. We highlight salient features of the underlying collaboration infrastructure { an application conferencing substrate that enables user level cooperation. We demonstrate that, in conjunction with ...

E-learning students’ fora were studied both manually and by computer. Physically distant students were asked to collaborate to write a program in small groups. Tutors evaluated the records of their discussions to assess the collaborative process and its phases. Discussions were also studied as a collective discourse directed by a goal. Computer parsing based on a discourse model was achieved. R...

The collaborative development of web ontologies is an important topic being actively researched. In this paper, we present a set of tools that facilitate collaborative development of web ontologies using distributed version control systems. The main purpose of these tools is to replace inefficient built-in diff and three-way merge tools, which rely on text representation rather than on ontology...