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Urbiflock

What is Urbiflock?

UrbiFlock is a framework sculpted for the development of pervasive social network applications: an emerging type of applications that enable spontaneous interactions of people by means of handheld devices (such as their cell phones). These applications exploit the colocation of a number of mobile devices in the proximity to enable social interaction on the move.

Urbiflock is a Facebook-like application framework for mobile devices. As in Facebook, users that join Urbiflock can meet other users and interact with them. For example users may broadcast announcements to each other, they can browse one another’s profile, launch interactive polls, etc. The framework takes care of managing a user’s social networks, called “flocks”. A flock represents a loosely-defined group of users. A flock can be compared to a Facebook group (for example, a group of your old classmates), but it additionally allows for the definition of groups of proximate flockrs (for example, a group of all of your friends that are currently nearby).

Users can also build applications and plug them into the Urbiflock framework. Several core applications are currently available in the Urbiflock framework, such as flock creators and profile viewers. The framework also counts with two user applications I rate you (IR8U) that allows users to ask proximate users to rate them on a certain subject, and Guanotes that allows user to send message to each other.

Terminology

  • Flockr: a user of the Urbiflock framework
  • Flock: a group of users
  • To flock: to become part of a group

Demo

Target Platforms

The Urbiflock framework has been written in the AmbientTalk language. As such, no configuration is required to be able to quickly script new applications on it once AmbientTalk is running on the target platform.

AmbientTalk runs on a regular J2SE Java Virtual Machine supporting version 1.3 or higher, Java 2 micro edition (J2ME) platform, under the connected device configuration (CDC), and Android Platform version 1.6 or higher.

We have implemented a AWT UI interface for Urbiflock's deployment on HTC touch cruise phones running J2ME. In order to configure your HTC Touch device for our framework you can follow the instruction here.

We are currently working on an Android UI interface for Urbiflock's deployment on a number of Android phones ( HTC Hero, Legend and Desire, and Sony Xperia X10 series).

Urbiflock architecture

The architecture of the Urbiflock framework shown below is divided in three layers: applications, Urbiflock core, and Urbiflock infrastructure. :uf:urbiflock_architecture.png

The application layer includes several core applications which are currently available in the framework such as flock and profile editors, and several users applications such as I rate you (IR8U), and Guanotes. The Urbiflock's core is composed of three main facilities specially designed to enable social interactivity and deal with the highly dynamic environment to which mobile devices exposes them: flockr, user profile and the TOTAM framework for flock communications. The infrastructure layer consists of three low-level abstractions on which the framework core is based: a RETE engine which orchestrates the flock composition, and the service discovery and communication APIs to discover and communicate with nearby applications, respectively.

In the rest of this subsection we list the relevant parts of the Urbiflock framework.

  • Flockr: A flockr represents a user in the framework.
  • User Profile: Profiles in Urbiflock represent the user identity (e.g. name, gender, hobbies, etc.).
  • Flock: a loosely defined group of users. It is an alternative representation of user groups specially designed to enable the dynamic interaction of social networks in pervasive social applications. A flock is defined in terms of a characteristic function.
  • Characteristic Functions: “functions” that determine whether or not a user belongs to a Flock.
  • TOTAM: tuple-based middleware for flock communication.
  • Applications: define the API of an “application object” to be plugged in the framework. What follows is the list of applications in Urbiflock.
    • Flock Viewer: a viewer and editor to view existing flocks and to create new flocks.
    • Application Viewer: a viewer and editor to view existing applications and install/delete them.
    • Profile Viewer: a viewer and editor to view existing flockr profiles and to update your profile.
    • IFlockU: a friend suggestor based on profile similarity and time spent in proximity.
    • Guanotes: a messenger application that sends post-its to flocks.
    • IR8U: an application that allows users to ask proximate users to rate them on a certain subject.

Development

at/urbiflock.1280936066.txt.gz · Last modified: 2010/08/04 17:39 (external edit)