MELSRV INSPEC DATABASES Z39.50 SERVER STATISTICS
Time period: 01/01/99 through 01/31/99
1.0 SUMMARY STATISTICS
_______________________
Relative use of INSPEC databases:
Number of
Searches Records Presented
________ _________________
INS (current) 28,533 1,011,481
INS90 5,483 94,379
INS85 3,601 71,778
INS80 2,084 43,545
INS69 1,985 43,662
Per hour usage:
Time Searches Records Presented
_______________ _____________ _________________
12-2 a.m. 925 40,380
2-4 a.m. 327 9,115
4-6 a.m. 218 9,667
6-8 a.m. 415 16,908
8-10 a.m. 2,435 62,446
10-12 a.m. 6,790 219,748
12-2 p.m. 6,679 196,755
2-4 p.m. 8,975 272,897
4-6 p.m. 7,136 196,757
6-8 p.m. 3,497 100,180
8-10 p.m. 2,414 79,774
10-12 p.m. 1,875 60,218
__________ _____________ _________________
Total: 41,686 1,264,845
1.1 SEARCH commands
____________________
Zero results may indicate no access to the database
Number of SEARCH commands issued by location:
Location Total
________ _____
Berkeley 105
Davis 197
Irvine 50
Los Angeles 52
Riverside 9
San Diego 632
San Francisco 70
Santa Barbara 212
Santa Cruz 3
Lawrence Berkeley 204
Lawrence Livermore 203
Los Alamos 0
MELWEB 39,484
Other - UC 305
Other-Network UC 160
_____
41,686
1.2 Records Presented
______________________
Zero results may indicate no access to the database
Number of Records Presented by location:
Location Total
________ _____
Berkeley 1,006
Davis 1,400
Irvine 501
Los Angeles 893
Riverside 125
San Diego 1,145
San Francisco 427
Santa Barbara 1,422
Santa Cruz 0
Lawrence Berkeley 2,870
Lawrence Livermore 2,790
Los Alamos 0
MELWEB 1,248,779
Other - UC 597
Other-Network UC 2,890
_____
1,264,845
1.3 Response time
__________________
Search response time from receipt of search request
DLA until transmission of search response:
Average in seconds 1.8
Standard deviation in seconds 6.4
Present response time from receipt of present request
DLA until transmission of a present response:
Average in seconds 0.2
Standard deviation in seconds 0.6
2.0 INSPEC Databases Detailed Statistics
_________________________________________
Median session length (minutes:seconds) 23:30
Average session length (minutes:seconds) 25:17
Longest session recorded (minutes:seconds) 251:16
Average number of searches completed per session 0.0
Retrievals per search - median 5.0
Retrievals per search - average 466.6
Retrievals per search - standard deviation 4670.3
Percent of searches completed with 0 results 26.5%
Percent of searches entered that are long 0.7%
Percent of long searches completed
(includes partial results) 100%
Commands entered, by type, excluding errors:
Total Percentage
__________ __________
SEARCH 41,686 13.3%
PRESENT 259,168 82.8%
INIT or CLOSE 11,706 3.7%
OTHER 471 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 18,090 32.8% 4,780 26.4% 10 93.9 1151.6
TITLE WORD 8,193 14.9% 2,879 35.1% 4 85.2 461.6
EXACT TITLE 649 1.2% 270 41.6% 1 22.6 151.0
JOURNAL 2,583 4.7% 1,226 47.5% 7 1438.3 7303.7
EXACT JOURNAL 712 1.3% 327 45.9% 307 2790.9 6903.9
SUBJECT 2,349 4.3% 825 35.1% 20 556.1 5143.6
EXACT SUBJECT 526 1.0% 107 20.3% 7 361.6 1341.7
THESAURUS 54 0.1% 28 51.9% 158 2871.3 5973.3
EXACT THESAURUS 210 0.4% 26 12.4% 82 1220.8 3895.4
KEYWORD 13,714 24.9% 2,748 20.0% 31 1228.2 8114.9
SUBFILE 143 0.3% 19 13.3% 46 231.3 574.1
FORM 705 1.3% 198 28.1% 25 225.9 770.9
DATE 776 1.4% 239 30.8% 14 150.0 500.3
ADDED 56 0.1% 27 48.2% 9 15.7 22.2
ARTICLE 510 0.9% 81 15.9% 35 484.2 4605.3
AUTHOR AFFIL. 822 1.5% 346 42.1% 12 283.9 1871.0
CONFERENCE 181 0.3% 61 33.7% 113 3790.1 23216.0
LANGUAGE 2,106 3.8% 436 20.7% 42 1044.0 4502.1
CHEMICAL NAME 377 0.7% 243 64.5% 12 152.5 426.2
ISSN 4 0.0% 3 75.0% 16 16.0 0.0
ISBN 7 0.0% 5 71.4% 1 1.0 0.0
ID NUMBER 0 0.0% 0 0.0% 0 0.0 0.0
PRODUCT NUMBER 3 0.0% 3 100% 0 0.0 0.0
STANDARD NUMBER 0 0.0% 0 0.0% 0 0.0 0.0
ISN 0 0.0% 0 0.0% 0 0.0 0.0
AT 2,385 4.3% 650 27.3% 21 1039.7 5417.2
Other indexes 2 0.0% 0 0.0% 11,303 11303.0 0.0
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 10,642 25.5% 3,586 33.7% 10 537.3 4316.8
Single 31,044 74.5% 7,458 24.0% 16 664.0 5730.2
PRESENT commands, by type:
MARC 36.4%
OPAC 22.0%