Learning and Recommending Shortcuts in Semantic Peer-to-Peer Networks
Christoph Tempich,
University of Karlsruhe –
Abstract:
A major problem within peer-to-peer systems is to find the best
peer given a certain query. Inspired by the work in the area of
social networks we present a novel peer-to-peer system called
INGA (Interest-based Node Grouping Architecture). Peers
cooperate to efficiently route queries along adaptive shortcuts
based overlays using only local knowledge. We propose active and
passive shortcut creation strategies and a new routing algorithm
that combines a greedy, high degree and flooding based search
depending on one’s knowledge. We quantify the benefit of the
overlay network by comparing the performance of INGA in the SWAP
simulation infrastructure against a simple Gnutella style network,
against recently proposed shortcut networks without similarity
metrics and against a relaxation based approach. While obtaining
the same recall we show in our experiments that with INGA we half
the messages for a query.
Date: 2004-Dec-09 Time: 16:00:00 Room: 336
For more information:
Upcoming Events
INESC Brussels HUB Winter Meeting 2023

This edition of the HUB Winter Meeting will be co-organised with Science Business and will take place on the 30 and 31 January, in Lisbon, at Instituto Superior Técnico, Department of Computer Science and Engineering.
Please see below a summary of the agenda, this will be updated on the INESC Brussels HUB website regularly (confirmed speakers and other relevant info). Places for onsite participation are limited so registration is mandatory. Online participants will be sent a ZOOM link for each specific session on the 27th January.
INESC Brussels HUB website: https://hub.inesc.pt/
Monday, 30 January
a) Digital Europe Programme & Chips Act: state of play and possibilities for INESC.
9h to 10h30 GMT
(Exclusive for INESC researchers and administrators).
b) Science Business: how can INESC tap into Science Business network, activities and communications tools.
(Exclusive for INESC researchers and administrators).
c) Networking Lunch (for all onsite participants).
d) Roundtable: From rhetoric to reality – Embedding international strategy in the DNA of research organisations.
(Closed-door, roundtable workshop, Chatham House rules, open to INESC researchers and administrators, external participants by invitation only).
e) Networking Dinner
(By invitation only – INESC researchers participating onsite in the event are elegible to join).
Tuesday, 31 January
f) Workshop: How they did it? Strategic positioning for structural success in Horizon Europe: a discussion of best practices.
(Exclusive for INESC researchers, administrators and international invited speakers).
g) The public consultation on European R&I Programmes: Towards FP10.
(Closed-door, roundtable workshop, Chatham House rules, open to INESC researchers and administrators, external participants by invitation only).
h) Networking Lunch (for all onsite participants).
i) Management Committee meeting (Directors and POB members)
The HUB Winter Meeting aims at bringing together researchers and administrators from the 5 INESC institutes, affiliated higher education institutions in Portugal and abroad, with key European and global players, to:
– Discuss key research and innovation issues at EU level.
– Inform institutional policy and strategy.
– Exchange best-practices about R&I management, career development and policy positioning.
– Promote, discuss and deliver vision, visibility, networking and impactful communication.
– Create, identify and deepen partnerships and collaboration opportunities for collaborative R&I.