1. DCU Search Runs at MediaEval 2012: Search and Hyperlinking Task
DCU Search Runs at MediaEval 2012:
Search and Hyperlinking Task
Maria Eskevich, Gareth J.F. Jones
Centre for Digital Video Processing, Centre for Next Generation Localisation
School of Computing, Dublin City University, Dublin, Ireland

2. DCU Search Runs at MediaEval 2012: Search and Hyperlinking Task
Motivation
Conclusions from Rich Speech Retrieval (RSR) 2011:
Addition of pause segmentation helps
Normalizing length of segments make results more stable
Search sub-task changes from RSR 2011:
2 transcripts (LIMSI/LIUM)
bigger dataset
new participants
Need for simple baseline runs

3. DCU Search Runs at MediaEval 2012: Search and Hyperlinking Task
Segmentation method:
Time = 180 sec, Pauses

4. DCU Search Runs at MediaEval 2012: Search and Hyperlinking Task
Segmentation method:
Time = 180 sec, Pauses

5. DCU Search Runs at MediaEval 2012: Search and Hyperlinking Task
Segmentation method:
Time = 180 sec, Pauses

6. DCU Search Runs at MediaEval 2012: Search and Hyperlinking Task
Segmentation method:
Time = 180 sec, Overlap = 60 sec, Pauses

7. DCU Search Runs at MediaEval 2012: Search and Hyperlinking Task
Segmentation method:
Time = 180 sec, Overlap = 60 sec, Pauses

8. DCU Search Runs at MediaEval 2012: Search and Hyperlinking Task
Segmentation method:
Time = 180 sec, Overlap = 60 sec, Pauses

9. DCU Search Runs at MediaEval 2012: Search and Hyperlinking Task
Sub-corpora details
Sub-corpora details
Run parameters Number of
Transcript type Pause Overlap documents terms
LIUM + – 865130 73601
LIUM + + 914085
LIMSI + – 331702 73601
LIMSI + + 355844
Terrier IR system with standard language model

10. DCU Search Runs at MediaEval 2012: Search and Hyperlinking Task
Results

11. DCU Search Runs at MediaEval 2012: Search and Hyperlinking Task
Thank you for attention!
Questions?