MELSRV BIOSIS DATABASES Z39.50 SERVER STATISTICS
Time period: 02/17/01 through 02/23/01
1.0 SUMMARY STATISTICS
_______________________
Relative use of BIOSIS databases:
Number of
Searches Records Presented
________ _________________
BIOSIS 17,140 493,508
BIO88 3,529 55,752
Per hour usage:
Time Searches Records Presented
_______________ _____________ _________________
12-2 a.m. 599 9,720
2-4 a.m. 262 5,930
4-6 a.m. 137 3,078
6-8 a.m. 337 10,758
8-10 a.m. 1,226 31,798
10-12 a.m. 3,116 81,781
12-2 p.m. 3,770 100,658
2-4 p.m. 4,122 120,198
4-6 p.m. 3,400 86,573
6-8 p.m. 1,681 44,442
8-10 p.m. 1,283 36,017
10-12 p.m. 736 18,307
__________ _____________ _________________
Total: 20,669 549,260
1.1 SEARCH commands
____________________
Zero results may indicate no access to the database
Number of SEARCH commands issued by location:
Location Total
________ _____
Berkeley 412
Davis 478
Irvine 50
Los Angeles 234
Riverside 259
San Diego 38
San Francisco 4
Santa Barbara 89
Santa Cruz 31
Lawrence Berkeley 8
Lawrence Livermore 0
Los Alamos 0
MELWEB 16,398
Searchlight 2,266
Other - UC 26
Other-Network UC 376
_____
20,669
1.2 Records Presented
______________________
Zero results may indicate no access to the database
Number of Records Presented by location:
Location Total
________ _____
Berkeley 5,846
Davis 8,781
Irvine 398
Los Angeles 2,658
Riverside 4,022
San Diego 343
San Francisco 144
Santa Barbara 1,443
Santa Cruz 591
Lawrence Berkeley 305
Lawrence Livermore 0
Los Alamos 0
MELWEB 509,492
Searchlight 6,911
Other - UC 217
Other-Network UC 8,109
_____
549,260
1.3 Response time
__________________
Search response time from receipt of search request
DLA until transmission of search response:
Average in seconds 2.0
Standard deviation in seconds 7.4
Present response time from receipt of present request
DLA until transmission of a present response:
Average in seconds 0.3
Standard deviation in seconds 0.8
2.0 BIOSIS Databases Detailed Statistics
_________________________________________
Median session length (minutes:seconds) 21:42
Average session length (minutes:seconds) 20:48
Longest session recorded (minutes:seconds) 203:01
Average number of searches completed per session 0.0
Retrievals per search - median 8.0
Retrievals per search - average 932.5
Retrievals per search - standard deviation 11349
Percent of searches completed with 0 results 20.0%
Percent of searches entered that are long 0.3%
Percent of long searches completed
(includes partial results) 100%
Commands entered, by type, excluding errors:
Total Percentage
__________ __________
SEARCH 20,669 12.8%
PRESENT 132,131 82.0%
INIT or CLOSE 7,999 5.0%
OTHER 269 0.2%
SEARCHes completed: RETRIEVALS PER NON-
TOTAL ZERO RESULTS ZERO RESULT SEARCHES
_____________ ______________ ______________________
% of % of
all all for Std.
No. SEARCHes No. Index Median Avg. Dev.
______ _________ ______ _______ ______ __________ _______
By index:
PERSONAL AUTHOR 5,948 20.8% 1,081 18.2% 10 156.8 3355.5
TITLE WORD 2,335 8.2% 674 28.9% 4 163.6 1265.5
EXACT TITLE 231 0.8% 125 54.1% 1 84.0 841.6
KEYWORD 12,826 45.0% 2,344 18.3% 23 1451.6 15056.7
JOURNAL 1,414 5.0% 536 37.9% 7 2531.7 14159.2
EXACT JOURNAL 361 1.3% 176 48.8% 59 1739.0 6568.8
SOURCE 0 0.0% 0 0.0% 0 0.0 0.0
CONFERENCE 0 0.0% 0 0.0% 0 0.0 0.0
BIOSYS NAMES 7 0.0% 5 71.4% 20 20.0 26.9
BIOSYS CODES 0 0.0% 0 0.0% 0 0.0 0.0
SUPERTAXA 37 0.1% 9 24.3% 17 267.0 501.8
MAJ CONCEPT CDES 1 0.0% 0 0.0% 149559 149559 0.0
CONCEPT CODES 0 0.0% 0 0.0% 0 0.0 0.0
PUBLICATION TYPE 78 0.3% 21 26.9% 14 660.3 3823.3
DATE 104 0.4% 20 19.2% 3 62.8 420.0
LANGUAGE 67 0.2% 15 22.4% 65 242.2 523.8
ADDED 487 1.7% 338 69.4% 5 13.3 21.3
AUTHOR AFFIL. 104 0.4% 37 35.6% 7 25.1 41.7
ACCESSION NO. 3 0.0% 3 100% 0 0.0 0.0
ISSN 1 0.0% 1 100% 0 0.0 0.0
ISBN 0 0.0% 0 0.0% 0 0.0 0.0
ISN 0 0.0% 0 0.0% 0 0.0 0.0
ARTICLE 3 0.0% 0 0.0% 124 108.0 100.0
AT 238 0.8% 61 25.6% 13 217.2 921.7
Other indexes 4,282 15.0% 941 22.0% 25 910.1 6892.6
RETRIEVALS PER NON-
TOTAL ZERO RESULTS ZERO RESULT SEARCHES
_____________ ______________ ______________________
% of % of
all all for Std.
No. SEARCHes No. Index Median Avg. Dev.
______ _________ ______ _______ ______ __________ _______
By number of indexes:
Multiple 5,737 27.8% 1,551 27.0% 9 520.3 5696.5
Single 14,932 72.2% 2,580 17.3% 21 1384.1 14282.2
PRESENT commands, by type:
MARC 52.3%
OPAC 32.1%
SBImm/dd srv.bio MELSRV BIOSIS DATABASES Z39.50 SERVER STATISTICS (weekly)