ISR10 Scientific Report No. ISR-10 Information Storage and Retrieval Document Retrieval Systems - OPtimization and Evaluation title page Joseph John Rocchio Harvard University Gerard Salton Use, reproduction, or publication, in whole or in part, is permitted for any purpose of the United States Government. DOCUENT RETRIEVAL SYS[OCRerr] - OPTIMIZATIO[OCRerr] AD EVALUATIO[OCRerr]