mwang@watmath.UUCP (mwang) (11/20/85)
DDEEPPAARRTTMMEENNTT OOFF CCOOMMPPUUTTEERR SSCCIIEENNCCEE UUNNIIVVEERRSSIITTYY OOFF WWAATTEERRLLOOOO SSEEMMIINNAARR AACCTTIIVVIITTIIEESS DDAATTAA SSTTRRUUCCTTUURRIINNGG SSEEMMIINNAARR - Tuesday, November 12, 1985. Prof. S. Christodoulakis of this department will speak on ``Optical Disks in Office Automation and their Retrieval Performance''. TTIIMMEE:: 12:30 PM RROOOOMM:: MC 5158 AABBSSTTRRAACCTT Optical disks started appearing in the computer market. It is projected that they will compete favorably with magnetic storage media in many demanding applications like office filing and engineering data bases. In this talk we outline the projected long term difficulties between magnetic and optical disks and we describe some properties of optical disks that make them appropriate for these markets. Based on our description we present a model for study- ing the performance of retrieval operations from opti- cal disks. We then describe a simple optical disk head scheduling algorithm and we present exact and approxi- mate analytic formulae for the evaluation of the re- trieval cost for documents and records from an optical disk. Finally we outline some research directions in the area.