MELSRV BIOSIS DATABASES Z39.50 SERVER STATISTICS
Time period: 12/02/00 through 12/08/00
1.0 SUMMARY STATISTICS
_______________________
Relative use of BIOSIS databases:
Number of
Searches Records Presented
________ _________________
BIOSIS 13,948 371,951
BIO88 3,129 49,566
Per hour usage:
Time Searches Records Presented
_______________ _____________ _________________
12-2 a.m. 561 5,502
2-4 a.m. 132 2,490
4-6 a.m. 121 2,013
6-8 a.m. 294 8,596
8-10 a.m. 976 27,872
10-12 a.m. 2,320 54,758
12-2 p.m. 2,916 73,902
2-4 p.m. 3,837 92,580
4-6 p.m. 2,747 67,535
6-8 p.m. 1,408 40,407
8-10 p.m. 1,101 28,310
10-12 p.m. 664 17,552
__________ _____________ _________________
Total: 17,077 421,517
1.1 SEARCH commands
____________________
Zero results may indicate no access to the database
Number of SEARCH commands issued by location:
Location Total
________ _____
Berkeley 242
Davis 371
Irvine 5
Los Angeles 95
Riverside 153
San Diego 161
San Francisco 10
Santa Barbara 85
Santa Cruz 149
Lawrence Berkeley 12
Lawrence Livermore 0
Los Alamos 0
MELWEB 13,260
Searchlight 2,279
Other - UC 21
Other-Network UC 234
_____
17,077
1.2 Records Presented
______________________
Zero results may indicate no access to the database
Number of Records Presented by location:
Location Total
________ _____
Berkeley 3,215
Davis 6,679
Irvine 39
Los Angeles 1,692
Riverside 3,493
San Diego 2,086
San Francisco 151
Santa Barbara 1,078
Santa Cruz 4,017
Lawrence Berkeley 149
Lawrence Livermore 0
Los Alamos 0
MELWEB 384,294
Searchlight 10,479
Other - UC 149
Other-Network UC 3,996
_____
421,517
1.3 Response time
__________________
Search response time from receipt of search request
DLA until transmission of search response:
Average in seconds 1.7
Standard deviation in seconds 6.0
Present response time from receipt of present request
DLA until transmission of a present response:
Average in seconds 0.2
Standard deviation in seconds 0.4
2.0 BIOSIS Databases Detailed Statistics
_________________________________________
Median session length (minutes:seconds) 21:17
Average session length (minutes:seconds) 19:09
Longest session recorded (minutes:seconds) 277:33
Average number of searches completed per session 0.0
Retrievals per search - median 7.0
Retrievals per search - average 883.0
Retrievals per search - standard deviation 9951.7
Percent of searches completed with 0 results 20.6%
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 17,077 13.6%
PRESENT 101,056 80.6%
INIT or CLOSE 7,182 5.7%
OTHER 123 0.1%
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 5,204 21.9% 1,001 19.2% 11 116.1 1167.9
TITLE WORD 1,996 8.4% 587 29.4% 4 496.1 6353.7
EXACT TITLE 163 0.7% 97 59.5% 1 67.0 238.7
KEYWORD 10,263 43.3% 1,964 19.1% 19 1199.1 11663.1
JOURNAL 1,142 4.8% 407 35.6% 6 2719.6 16753.7
EXACT JOURNAL 202 0.9% 100 49.5% 10 946.7 2086.9
SOURCE 0 0.0% 0 0.0% 0 0.0 0.0
CONFERENCE 3 0.0% 3 100% 0 0.0 0.0
BIOSYS NAMES 29 0.1% 21 72.4% 13 1086.6 2977.3
BIOSYS CODES 0 0.0% 0 0.0% 0 0.0 0.0
SUPERTAXA 35 0.1% 6 17.1% 23 4380.7 21449.5
MAJ CONCEPT CDES 6 0.0% 0 0.0% 52,124 45932.0 25751.9
CONCEPT CODES 7 0.0% 1 14.3% 660 56339.8 92963.5
PUBLICATION TYPE 21 0.1% 4 19.0% 4 158.2 422.9
DATE 141 0.6% 30 21.3% 5 143.2 903.2
LANGUAGE 40 0.2% 14 35.0% 8 4725.6 16147.7
ADDED 546 2.3% 333 61.0% 2 7.1 22.0
AUTHOR AFFIL. 91 0.4% 28 30.8% 8 73.6 415.3
ACCESSION NO. 0 0.0% 0 0.0% 0 0.0 0.0
ISSN 0 0.0% 0 0.0% 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 2 0.0% 0 0.0% 17 17.0 21.2
AT 251 1.1% 74 29.5% 15 438.9 2052.0
Other indexes 3,569 15.1% 734 20.6% 17 1112.8 11066.4
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 5,002 29.3% 1,383 27.6% 8 525.2 6201.5
Single 12,075 70.7% 2,141 17.7% 20 1326.6 12479.1
PRESENT commands, by type:
MARC 52.7%
OPAC 30.1%
SBImm/dd srv.bio MELSRV BIOSIS DATABASES Z39.50 SERVER STATISTICS (weekly)