1. Stuff I’ve Seen: A System for Personal Information Retrieval and Re-use by Seher Acer Elif Demirli Susan Dumais, Edward Cutrell, JJ Cadiz, Gavin Jancke, Raman Sarin, Daniel C. Robbins

2. Motivation To make it easy for people to find information they have seen before To provide a uniform index for different information sources ◦ Web page, email, document, media file etc. To allow users to start with a broad query and refine it by interactively filtering and sorting the results 2/8

3. System Architecture The Gatherer The Filter The Tokenizer The Indexer The Retriever 3/8

4. User Interface: Top View 4/8

5. User Interface: Side View 5/8

6. Evaluation Log data evaluation ◦ 234 people, 6 week period, 8200 queries ◦ Average query length: 1.59 words ◦ 48% of the queries are refined ◦ Most common filter is selecting file types Top vs. side layout 6/8

7. Evaluation Questionnaire Data 7/8

8. Thank you for listening… 8/8