Search Result Caching in Peer-to-Peer Information Retrieval Networks
Tigelaar, A. S. & Hiemstra, D. & Trieschnigg, D.
In Proceedings of IRFC 2011, Vienna, Austria (pp. 134-148).

View in Repository
View at SpringerLink

Abstract
For peer-to-peer web search engines it is important to quickly process queries and return search results. How to keep the perceived latency low is an open challenge. In this paper we explore the solution potential of search result caching in large-scale peer-to-peer information retrieval networks by simulating such networks with increasing levels of realism. We find that a small bounded cache offers performance comparable to an unbounded cache. Furthermore, we explore partially centralised and fully distributed scenarios, and find that in the most realistic distributed case caching can reduce the query load by thirty-three percent. With optimisations this can be boosted to nearly seventy percent.

Presented at the Information Retrieval Facility Conference 2011 on June 6th 2011 in Vienna, Austria.

DEIRA: A Dynamic Engaging Intelligent Reporter Agent (demo paper)
Knoppel, F. L. A. & Tigelaar, A. S. & Oude Bos, D. & Alofs, T.
In Proceedings of BNAIC 2008, Enschede, The Netherlands (pp. 393-394).

View in Repository

Abstract
DEIRA is an embodied agent with a highly modular design, supporting several domains such as real time virtual horse race commentary, robosoccer commentary and virtual storytelling. Domain-specific information is processed to have the agent act on emotion and produce a compelling report on the situation, using synthesized speech and facial expressions. This paper briefly describes the features of the agent.

Presented at Belgian-Netherlands Conference on Artificial Intelligence 2008 on October 18th 2008 in Enschede, The Netherlands.

Trackside DEIRA: A Dynamic Engaging Intelligent Reporter Agent (demo paper)
Knoppel, F. L. A. & Tigelaar, A. S. & Oude Bos, D. & Alofs, T. & Ruttkay, Z.
In Proceedings of AAMAS 2008, Estoril, Portugal.

View in Repository
Download from IFAAMAS

Abstract
DEIRA is a virtual agent commenting on virtual horse races in real time. DEIRA analyses the state of the race, acts on emotion and comments about the situation in a believable and engaging way, using synthesized speech and facial expressions. This paper shortly describes the features of this embodied conversational agent.

Demo given at the International Conference on Autonomous Agents and Multiagent Systems on May 15th 2008 in Estoril, Portugal.

See the HMI Showcase

Other Examples

Trackside DEIRA: A Dynamic Engaging Intelligent Reporter Agent (full paper)
Knoppel, F. L. A. & Tigelaar, A. S. & Oude Bos, D. & Alofs, T. & Ruttkay, Z.
In Proceedings of AAMAS 2008, Estoril, Portugal (pp. 112-119).

View in Repository
View in ACM Digital Library

Abstract
DEIRA is a virtual agent commenting on virtual horse races in real time. DEIRA analyses the state of the race, acts emotionally and comments about the situation in a believable and engaging way, using synthesized speech and facial expressions. In this paper we discuss the challenges, explain the computational models for the cognitive, emotional and communicative behavior, and account on implementation and feedback from users.

Presented at the International Conference on Autonomous Agents and Multiagent Systems on May 14th 2008 in Estoril, Portugal.

More Pictures

Trackside DEIRA: A Virtual Horse Race Reporter (demo paper)
Tigelaar, A. S. & Knoppel, F. L. A. & Oude Bos, D. & Alofs, T. & Ruttkay, Z. & Nijholt, A.
Presented at INTETAIN 2008, Cancun, Mexico.