Intelligent Agents in Digital Libraries
| CS6210 Class Presentation Qiu Long and Tok Wee Hyong |
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| (qiul,tokwh}@comp.nus.edu.sg |
| Motivation | ||
| Intelligent Agents in action! | ||
| UMDL | ||
| Zuno | ||
| What’s the next step? | ||
| Be able to handle large number of content providers | ||
| Rich collection of information that could be stored in digital libraries | ||
| Large collection spanning multiple distributed databases | ||
| Need to query information across several digital library | ||
| Need for a scalable digital library architecture | ||
| Remove single point of failure or bottleneck | ||
| Knowbots (Kahn, R and Cerf, V – 1988) | ||
| Primary medium of communication and interaction between various major components in the digital library | ||
| Software components | |||
| Communication | |||
| Interoperable with other agents | |||
| Communicate with their peers via message exchanges | |||
| Autonomous (=> local or decentralized control) | |||
| Process knowledge and draw inferences | |||
| Reactive | |||
| Proactive | |||
| Adaptive | |||
University of Michigan
Digital Library (UMDL)
| Information space divided into 2 levels | ||
| Conspectus: Stores a set of collection
descriptors (E.g Search engine capabilities, document structure) |
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| Collection: Stores the actual documents in its native format | ||
| An agent in UMDL | |||
| Represent an element of the digital library | |||
| Communicate and negotiate with other agents via KQML | |||
| Consists of 3 main types of agents | |||
| User Interface Agents (UIAs) | |||
| Collection Interface Agents (CIAs) | |||
| Mediator Agents | |||
| Agent-based | ||
| Decentralized framework | ||
| Domain independence | ||
| WWW front-end | ||
| Information economy | ||
| Decentralized, dynamic supply & demand, efficiency desired | ||
| Consumer, producer and broker | ||
| Producer Agents | ||
| Library Service Agents (LSAs) | ||
| Catalogue Agents(CAs) | ||
| Facilitator Agents | ||
| Search Agents(SAs) | ||
| Consumer Agents | ||
| User Interface Agents (UIAs) | ||
| Digital Libraries and Agent-based System | ||
| UMDL | ||
| Zuno | ||
| Issues addressed | ||
| Distributed data & control | ||
| Lack of global viewpoint | ||
| Dynamic environment | ||
| Efficiency | ||
Agent commonalities –
What’s the next Step?
| Moving from task-oriented agents towards intelligent, learning agents | ||
| Continuous learning | ||
| Mimicking expert users | ||
| Improving on the exploration process | ||
| Security | ||