Sharable Information Workspace

William LeeComputer ScienceUniversity of Illinois at Urbana-Champaign

Motivation P2P offers a powerful platform to share

information More effective usage of bandwidth Services can be more decentralized Currently usage limits to file sharing

Difficult to manage information within a community Hard to organize personal web pages, blogs, and

sharable files Access control hard to enforced What about accessing the deep web?

Community

Information Lifecycle

Private InformationAda

Personal P2P Gateway

Public Information

Private P2P Subnet

Public P2P Network

Bob

Jane

producesChange status

publish

publish

P2P Network

share

retrieve/contribute information

Information Workspace Jane’s desktop can be managed by a

personal agent (P2P Gateway) Private information

Encrypted and distributed to the private P2P subnet

Access is enforced through a smart distributed access control system within the P2P subnet

Can invite any individual to join the subnet Public information

Shared among all P2P clients Access control not enforced

Advantages Efficient use of computing resources Can access private information securely

everywhere, as long as one can log into the private P2P networks

Information is easily sharable among people in the subnet

Each private P2P network can provide services such as searching and mining on member’s shared information

Possible Services within a P2P Subnet Entity linking and ontology creation

Link entities within a subnet with triplets like (entityA, relationship, entityB)

Producer of the information can be identified easily

Certain ontology can be inferred by user action (e.g. Access to another’s research paper in the subnet implies “citing”)

Expert ranking / Interest Finding Based on the documents within the subnet, find

the experts of a subject or people who share common interests

The 10-Million-Dollars Question

50% on distributed access control and file sharing systems

50% on distributed information access services