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Slide1: 

Tim Benke Supervisors: Josiane Xavier Parreira, Sebastian Michel Bachelor thesis

Why P2P-Networks ?: 

Why P2P-Networks ?

Querying in P2P-networks : 

4 hops 3 hops 2 hops 1 hop 0 hops Querying in P2P-networks Dirk Nowitzki TTL:

Idea Semantic Overlay Networks: 

Idea Semantic Overlay Networks Group peers according to their content Querying in Semantic Overlay Network (SON) only ask all nodes for specific content field

Querying in a SON : 

Querying in a SON Dirk Nowitzki basketball flowers geology computer science

How to build a SON: 

How to build a SON Dating

Process of P2P-dating: 

Process of P2P-dating

Search in SON: 

Search in SON

Strategies for scores: 

Strategies for scores Similarity Only: Overlap Only: Weighted Sum: Random: no Score computed Similarity(A,B) 0 = the same >0 until ∞ : differs

Overlap Measure: 

Overlap Measure measure the overlap with formula: = hashs of documents

Similarity Measure: 

Similarity Measure Similarity(A,B) 0 = the same >0 until ∞ : differs

PASTRY: network infrastructure: 

PASTRY: network infrastructure

Local Collections: 

Local Collections

Experimental Setup: 

Experimental Setup

Chart 1: 

Chart 1

Chart 1: 

Chart 1

Chart 2: 

Chart 2

Chart 2: 

Chart 2

Conclusion: 

Conclusion

Future Work: 

Future Work

Slide21: 

20.12.2007 21 Tim Benke PLAGIA

FreePastry: 

FreePastry

Overview: 

Overview

Chart 2: 

Chart 2

Chart 1: 

Chart 1

O:P2P-Dating Project: 

O:P2P-Dating Project

Process of P2P-dating: 

Process of P2P-dating Michael Jordan Friend List