1. Parametric Search of E-Commerce Data J. Shafer, R. Agrawal : WWW-9

2. Conventional Wisdom User enters search criteria into HTML form User’s query is received by web-server and submitted to a server-side database (usually as SQL) Result set is returned to user as an HTML page (or a series of pages)

3. Search Problem in E-Commerce Users often don’t know exactly what they are looking for –Search is a process, not a single operation –An individual query is simply a means to an end Too many/few results: try different query No universal ranking function

4. Essential Ideas of Eureka Incrementally fetch superset of tuples of interest in the client (e.g. all products in the product category of interest) User-interface and fast indexing structures for interactive exploration of the cached tuples

5. Restriction by example Ranking Fuzzy restrictions

6. Architecture Overview DataGroup DataColumn #1 Eureka DataPump ListRenderer DataColumn #N Servlet Database client server... HTTP JDBC

7. Comments Used Eureka in several situations with very positive feedback Used Eureka on datasets with 100K records with no visible deterioration in performance Performance is excellent, even in Java