MELSRV BIOSIS DATABASES Z39.50 SERVER STATISTICS
Time period: 05/26/01 through 06/01/01
1.0 SUMMARY STATISTICS
_______________________
Relative use of BIOSIS databases:
Number of
Searches Records Presented
________ _________________
BIOSIS 17,750 481,204
BIO88 3,376 51,158
Per hour usage:
Time Searches Records Presented
_______________ _____________ _________________
12-2 a.m. 572 11,464
2-4 a.m. 466 6,330
4-6 a.m. 102 3,436
6-8 a.m. 340 11,442
8-10 a.m. 1,255 31,736
10-12 a.m. 2,807 76,419
12-2 p.m. 3,753 89,944
2-4 p.m. 4,106 106,057
4-6 p.m. 3,723 91,809
6-8 p.m. 1,715 42,358
8-10 p.m. 1,408 38,401
10-12 p.m. 879 22,966
__________ _____________ _________________
Total: 21,126 532,362
1.1 SEARCH commands
____________________
Zero results may indicate no access to the database
Number of SEARCH commands issued by location:
Location Total
________ _____
Berkeley 368
Davis 567
Irvine 8
Los Angeles 124
Riverside 90
San Diego 82
San Francisco 34
Santa Barbara 231
Santa Cruz 45
Lawrence Berkeley 6
Lawrence Livermore 0
Los Alamos 0
MELWEB 16,537
Searchlight 2,646
Other - UC 164
Other-Network UC 224
_____
21,126
1.2 Records Presented
______________________
Zero results may indicate no access to the database
Number of Records Presented by location:
Location Total
________ _____
Berkeley 2,788
Davis 7,356
Irvine 100
Los Angeles 1,526
Riverside 15,180
San Diego 464
San Francisco 884
Santa Barbara 2,077
Santa Cruz 629
Lawrence Berkeley 568
Lawrence Livermore 0
Los Alamos 0
MELWEB 485,512
Searchlight 10,406
Other - UC 1,638
Other-Network UC 3,234
_____
532,362
1.3 Response time
__________________
Search response time from receipt of search request
DLA until transmission of search response:
Average in seconds 1.9
Standard deviation in seconds 7.6
Present response time from receipt of present request
DLA until transmission of a present response:
Average in seconds 0.2
Standard deviation in seconds 0.5
2.0 BIOSIS Databases Detailed Statistics
_________________________________________
Median session length (minutes:seconds) 21:31
Average session length (minutes:seconds) 20:26
Longest session recorded (minutes:seconds) 175:03
Average number of searches completed per session 0.0
Retrievals per search - median 8.0
Retrievals per search - average 996.4
Retrievals per search - standard deviation 13387
Percent of searches completed with 0 results 20.1%
Percent of searches entered that are long 0.2%
Percent of long searches completed
(includes partial results) 100%
Commands entered, by type, excluding errors:
Total Percentage
__________ __________
SEARCH 21,126 12.8%
PRESENT 135,106 82.0%
INIT or CLOSE 8,174 5.0%
OTHER 384 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 5,523 18.3% 1,008 18.3% 8 127.3 1331.3
TITLE WORD 2,864 9.5% 937 32.7% 5 325.4 2186.5
EXACT TITLE 215 0.7% 119 55.3% 1 32.9 193.6
KEYWORD 13,398 44.4% 2,369 17.7% 23 1483.1 17490.2
JOURNAL 1,219 4.0% 442 36.3% 8 2973.7 17636.8
EXACT JOURNAL 249 0.8% 107 43.0% 716 2330.3 3999.7
SOURCE 0 0.0% 0 0.0% 0 0.0 0.0
CONFERENCE 5 0.0% 3 60.0% 13 12.5 16.3
BIOSYS NAMES 14 0.0% 11 78.6% 25 75.0 108.1
BIOSYS CODES 3 0.0% 0 0.0% 23 17.3 11.6
SUPERTAXA 44 0.1% 4 9.1% 26 1629.7 9290.5
MAJ CONCEPT CDES 3 0.0% 0 0.0% 89,291 85007.0 24283.1
CONCEPT CODES 13 0.0% 2 15.4% 33 132.5 218.2
PUBLICATION TYPE 48 0.2% 7 14.6% 42 1650.1 9170.5
DATE 156 0.5% 33 21.2% 5 119.6 430.6
LANGUAGE 53 0.2% 10 18.9% 45 1609.4 8957.6
ADDED 673 2.2% 496 73.7% 5 12.6 22.3
AUTHOR AFFIL. 211 0.7% 38 18.0% 12 224.6 1170.7
ACCESSION NO. 1 0.0% 1 100% 0 0.0 0.0
ISSN 5 0.0% 2 40.0% 41 1471.3 2509.5
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 9 0.0% 3 33.3% 89 392.7 524.1
AT 286 0.9% 61 21.3% 16 261.1 738.8
Other indexes 5,169 17.1% 959 18.6% 26 1229.2 9660.9
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 6,762 32.0% 1,760 26.0% 11 779.5 7343.3
Single 14,364 68.0% 2,477 17.2% 20 1442.8 17182.2
PRESENT commands, by type:
MARC 52.9%
OPAC 34.4%
SBImm/dd srv.bio MELSRV BIOSIS DATABASES Z39.50 SERVER STATISTICS (weekly)