A new generation of applications running on a network of nodes, that share data on an ad-hoc basis, will benefit from data management services including powerful querying facilities. In this paper, we introduce the goals, assumptions and architecture of AmbientDB, a new peer-to-peer (P2P) DBMS prototype developed at CWI. Our focus is on the query processing facilities of AmbientDB, that are bas...

This paper presents preliminary work towards personalizing and recommending social network games based on a user’s player type. In particular, we present research aimed at supporting such personalization through the prediction of player type from automatically collected user data. We first provide a brief overview of player types, and then outline several data sources that we gathered from a po...

The recognition of printed sheet music has been studied since the late 1960s. However, current applications often require careful scanning of musical scores, making it inconvenient for average music enthusiasts. With the advances in mobile devices and network connectivity, we develop an optical music recognition system to remotely interpret printed sheet music captured by an Android phone and p...

We developed a kinetic particles synthesizer for mobile devices having a multi-touch screen such as a tablet PC and a smart phone. This synthesizer generates music based on the kinetics of particles under a two-dimensional physics engine. The particles move in the screen to synthesize sounds according to their own physical properties, which are shape, size, mass, linear and angular velocity, fr...

Twitter is the largest source of public opinion and also contains a vast amount of information about its users’ music favors or listening behaviour. However, this source has not been exploited for the recommendation of music yet. In this paper, we present how Twitter can be facilitated for the creation of a data set upon which music recommendations can be computed. The data set is based on micr...

This experimental work presents an application for music visualization. There are several ways how to solve this task. We can find two basic approaches to music visualization: real-time animation (Winamp, Cubic player plugins), and preprocessed animation (3D Max studio, Softimage). Realtime animations are often composed simple objects modified in dependency of music. Preprocessed animations are...

Permission is granted to quote short excerpts and to reproduce figures and tables from this report, provided that the source of such material is fully acknowledged.