MELSRV INSPEC DATABASES Z39.50 SERVER STATISTICS
Time period: 08/01/99 through 08/31/99
1.0 SUMMARY STATISTICS
_______________________
Relative use of INSPEC databases:
Number of
Searches Records Presented
________ _________________
INS (current) 26,838 1,551,102
INS90 6,993 123,206
INS85 5,090 58,164
INS80 4,248 32,996
INS69 4,408 47,890
Per hour usage:
Time Searches Records Presented
_______________ _____________ _________________
12-2 a.m. 1,385 28,188
2-4 a.m. 738 7,976
4-6 a.m. 831 12,565
6-8 a.m. 768 99,061
8-10 a.m. 2,706 82,451
10-12 a.m. 7,741 317,278
12-2 p.m. 6,979 258,094
2-4 p.m. 10,374 403,341
4-6 p.m. 8,464 311,953
6-8 p.m. 3,516 136,134
8-10 p.m. 2,049 64,549
10-12 p.m. 2,026 91,768
__________ _____________ _________________
Total: 47,577 1,813,358
1.1 SEARCH commands
____________________
Zero results may indicate no access to the database
Number of SEARCH commands issued by location:
Location Total
________ _____
Berkeley 1,135
Davis 62
Irvine 117
Los Angeles 99
Riverside 3
San Diego 4,891
San Francisco 44
Santa Barbara 157
Santa Cruz 182
Lawrence Berkeley 31
Lawrence Livermore 22
Los Alamos 0
MELWEB 40,521
Other - UC 152
Other-Network UC 161
_____
47,577
1.2 Records Presented
______________________
Zero results may indicate no access to the database
Number of Records Presented by location:
Location Total
________ _____
Berkeley 307,784
Davis 761
Irvine 1,942
Los Angeles 1,092
Riverside 876
San Diego 2,277
San Francisco 185
Santa Barbara 4,957
Santa Cruz 0
Lawrence Berkeley 488
Lawrence Livermore 746
Los Alamos 0
MELWEB 1,490,080
Other - UC 208
Other-Network UC 1,962
_____
1,813,358
1.3 Response time
__________________
Search response time from receipt of search request
DLA until transmission of search response:
Average in seconds 1.4
Standard deviation in seconds 10.8
Present response time from receipt of present request
DLA until transmission of a present response:
Average in seconds 0.3
Standard deviation in seconds 1.0
2.0 INSPEC Databases Detailed Statistics
_________________________________________
Median session length (minutes:seconds) 21:51
Average session length (minutes:seconds) 20:39
Longest session recorded (minutes:seconds) 154:58
Average number of searches completed per session 0.0
Retrievals per search - median 3.0
Retrievals per search - average 354.4
Retrievals per search - standard deviation 5297.4
Percent of searches completed with 0 results 29.7%
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 47,577 11.0%
PRESENT 362,322 83.9%
INIT or CLOSE 21,302 4.9%
OTHER 407 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 17,154 28.6% 4,558 26.6% 9 55.5 511.2
TITLE WORD 9,168 15.3% 3,080 33.6% 5 111.2 1538.3
EXACT TITLE 554 0.9% 260 46.9% 1 21.9 240.1
JOURNAL 3,675 6.1% 1,388 37.8% 47 978.0 6291.0
EXACT JOURNAL 586 1.0% 267 45.6% 273 2788.5 6440.8
SUBJECT 1,974 3.3% 702 35.6% 9 205.2 981.2
EXACT SUBJECT 519 0.9% 125 24.1% 4 275.8 2450.4
THESAURUS 7 0.0% 7 100% 0 0.0 0.0
EXACT THESAURUS 171 0.3% 24 14.0% 19 517.3 1227.9
KEYWORD 19,246 32.0% 5,878 30.5% 13 896.9 9489.5
SUBFILE 86 0.1% 14 16.3% 26 782.0 5615.4
FORM 495 0.8% 104 21.0% 19 287.8 2455.1
DATE 464 0.8% 113 24.4% 10 130.1 636.5
ADDED 196 0.3% 139 70.9% 3 10.2 21.5
ARTICLE 49 0.1% 8 16.3% 33 1383.0 7427.7
AUTHOR AFFIL. 894 1.5% 374 41.8% 9 69.2 411.2
CONFERENCE 187 0.3% 96 51.3% 61 631.4 1575.8
LANGUAGE 1,667 2.8% 415 24.9% 19 388.3 1935.6
CHEMICAL NAME 344 0.6% 169 49.1% 8 67.1 191.6
ISSN 2 0.0% 2 100% 0 0.0 0.0
ISBN 2 0.0% 2 100% 0 0.0 0.0
ID NUMBER 1 0.0% 1 100% 0 0.0 0.0
PRODUCT NUMBER 2 0.0% 2 100% 0 0.0 0.0
STANDARD NUMBER 1 0.0% 1 100% 0 0.0 0.0
ISN 0 0.0% 0 0.0% 0 0.0 0.0
AT 2,621 4.4% 616 23.5% 20 366.9 1996.9
Other indexes 9 0.0% 8 88.9% 718 718.0 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 10,365 21.8% 3,421 33.0% 7 189.5 1431.5
Single 37,212 78.2% 10,712 28.8% 12 586.6 7051.2
PRESENT commands, by type:
MARC 53.8%
OPAC 28.5%