MELSRV INSPEC DATABASES Z39.50 SERVER STATISTICS
Time period: 07/01/99 through 07/31/99
1.0 SUMMARY STATISTICS
_______________________
Relative use of INSPEC databases:
Number of
Searches Records Presented
________ _________________
INS (current) 29,573 1,521,004
INS90 9,167 163,721
INS85 6,089 70,013
INS80 4,803 38,732
INS69 4,898 59,109
Per hour usage:
Time Searches Records Presented
_______________ _____________ _________________
12-2 a.m. 1,051 40,332
2-4 a.m. 692 14,086
4-6 a.m. 236 7,840
6-8 a.m. 381 14,395
8-10 a.m. 3,502 117,802
10-12 a.m. 9,292 312,914
12-2 p.m. 9,096 306,399
2-4 p.m. 11,593 382,249
4-6 p.m. 10,490 378,375
6-8 p.m. 4,188 140,846
8-10 p.m. 2,240 70,242
10-12 p.m. 1,769 67,099
__________ _____________ _________________
Total: 54,530 1,852,579
1.1 SEARCH commands
____________________
Zero results may indicate no access to the database
Number of SEARCH commands issued by location:
Location Total
________ _____
Berkeley 253
Davis 9
Irvine 53
Los Angeles 140
Riverside 26
San Diego 1,060
San Francisco 15
Santa Barbara 254
Santa Cruz 288
Lawrence Berkeley 259
Lawrence Livermore 52
Los Alamos 0
MELWEB 51,705
Other - UC 209
Other-Network UC 207
_____
54,530
1.2 Records Presented
______________________
Zero results may indicate no access to the database
Number of Records Presented by location:
Location Total
________ _____
Berkeley 8,262
Davis 305
Irvine 1,937
Los Angeles 1,556
Riverside 230
San Diego 1,051
San Francisco 30
Santa Barbara 6,806
Santa Cruz 37
Lawrence Berkeley 2,490
Lawrence Livermore 669
Los Alamos 0
MELWEB 1,822,063
Other - UC 4,070
Other-Network UC 3,073
_____
1,852,579
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 11.6
Present response time from receipt of present request
DLA until transmission of a present response:
Average in seconds 0.3
Standard deviation in seconds 0.6
2.0 INSPEC Databases Detailed Statistics
_________________________________________
Median session length (minutes:seconds) 23:06
Average session length (minutes:seconds) 25:51
Longest session recorded (minutes:seconds) 234:20
Average number of searches completed per session 0.0
Retrievals per search - median 4.0
Retrievals per search - average 289.2
Retrievals per search - standard deviation 2886.5
Percent of searches completed with 0 results 26.8%
Percent of searches entered that are long 0.6%
Percent of long searches completed
(includes partial results) 100%
Commands entered, by type, excluding errors:
Total Percentage
__________ __________
SEARCH 54,530 13.8%
PRESENT 318,365 80.8%
INIT or CLOSE 20,117 5.1%
OTHER 792 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 23,168 32.9% 6,068 26.2% 9 53.8 327.4
TITLE WORD 10,518 14.9% 3,652 34.7% 4 94.0 846.7
EXACT TITLE 1,068 1.5% 491 46.0% 1 21.6 256.7
JOURNAL 3,632 5.2% 1,637 45.1% 7 1138.0 6101.3
EXACT JOURNAL 885 1.3% 378 42.7% 242 2438.1 6259.2
SUBJECT 2,355 3.3% 785 33.3% 10 167.6 1061.9
EXACT SUBJECT 586 0.8% 136 23.2% 5 243.3 861.2
THESAURUS 19 0.0% 11 57.9% 17 1417.6 3868.9
EXACT THESAURUS 152 0.2% 22 14.5% 23 825.7 2898.5
KEYWORD 18,944 26.9% 4,078 21.5% 21 676.6 4628.9
SUBFILE 123 0.2% 19 15.4% 43 327.6 1083.7
FORM 525 0.7% 110 20.9% 17 194.4 684.8
DATE 798 1.1% 221 27.7% 10 209.3 1268.6
ADDED 291 0.4% 225 77.3% 3 8.5 13.3
ARTICLE 75 0.1% 20 26.7% 76 240.5 380.8
AUTHOR AFFIL. 966 1.4% 348 36.0% 10 48.9 329.8
CONFERENCE 267 0.4% 128 47.9% 56 1985.0 13190.7
LANGUAGE 2,366 3.4% 502 21.2% 23 584.4 3430.5
CHEMICAL NAME 396 0.6% 195 49.2% 8 102.9 839.4
ISSN 0 0.0% 0 0.0% 0 0.0 0.0
ISBN 4 0.0% 3 75.0% 24 24.0 0.0
ID NUMBER 13 0.0% 2 15.4% 1 1.0 0.0
PRODUCT NUMBER 6 0.0% 6 100% 0 0.0 0.0
STANDARD NUMBER 10 0.0% 9 90.0% 1 1.0 0.0
ISN 0 0.0% 0 0.0% 0 0.0 0.0
AT 3,203 4.6% 840 26.2% 12 264.2 1898.3
Other indexes 3 0.0% 3 100% 0 0.0 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 13,053 23.9% 4,346 33.3% 7 207.5 1905.1
Single 41,477 76.1% 10,248 24.7% 14 447.2 3670.2
PRESENT commands, by type:
MARC 34.9%
OPAC 39.6%