MELSRV INSPEC DATABASES Z39.50 SERVER STATISTICS
Time period: 05/01/99 through 05/31/99
1.0 SUMMARY STATISTICS
_______________________
Relative use of INSPEC databases:
Number of
Searches Records Presented
________ _________________
INS (current) 36,898 1,423,436
INS90 7,022 107,693
INS85 4,701 75,036
INS80 2,736 35,994
INS69 3,038 64,431
Per hour usage:
Time Searches Records Presented
_______________ _____________ _________________
12-2 a.m. 1,507 47,043
2-4 a.m. 660 15,350
4-6 a.m. 282 7,622
6-8 a.m. 548 14,758
8-10 a.m. 3,019 98,494
10-12 a.m. 8,347 262,487
12-2 p.m. 8,102 251,676
2-4 p.m. 10,838 344,895
4-6 p.m. 9,833 302,025
6-8 p.m. 4,949 161,781
8-10 p.m. 3,172 93,034
10-12 p.m. 3,138 107,425
__________ _____________ _________________
Total: 54,395 1,706,590
1.1 SEARCH commands
____________________
Zero results may indicate no access to the database
Number of SEARCH commands issued by location:
Location Total
________ _____
Berkeley 362
Davis 22
Irvine 42
Los Angeles 39
Riverside 15
San Diego 1,244
San Francisco 30
Santa Barbara 193
Santa Cruz 474
Lawrence Berkeley 183
Lawrence Livermore 306
Los Alamos 0
MELWEB 49,351
Other - UC 1,744
Other-Network UC 390
_____
54,395
1.2 Records Presented
______________________
Zero results may indicate no access to the database
Number of Records Presented by location:
Location Total
________ _____
Berkeley 4,174
Davis 56
Irvine 57
Los Angeles 1,144
Riverside 12,976
San Diego 724
San Francisco 64
Santa Barbara 2,457
Santa Cruz 0
Lawrence Berkeley 1,322
Lawrence Livermore 4,933
Los Alamos 0
MELWEB 1,634,078
Other - UC 25,533
Other-Network UC 19,072
_____
1,706,590
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 7.4
Present response time from receipt of present request
DLA until transmission of a present response:
Average in seconds 0.3
Standard deviation in seconds 1.1
2.0 INSPEC Databases Detailed Statistics
_________________________________________
Median session length (minutes:seconds) 23:35
Average session length (minutes:seconds) 25:34
Longest session recorded (minutes:seconds) 274:12
Average number of searches completed per session 0.0
Retrievals per search - median 5.0
Retrievals per search - average 377.9
Retrievals per search - standard deviation 3877.1
Percent of searches completed with 0 results 25.9%
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 54,395 13.2%
PRESENT 342,210 83.0%
INIT or CLOSE 15,385 3.7%
OTHER 500 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 21,975 30.7% 5,583 25.4% 10 82.8 754.1
TITLE WORD 11,452 16.0% 3,768 32.9% 4 152.4 2429.0
EXACT TITLE 749 1.0% 384 51.3% 1 21.3 142.6
JOURNAL 3,387 4.7% 1,609 47.5% 6 745.7 8918.0
EXACT JOURNAL 913 1.3% 415 45.5% 435 2793.3 6465.9
SUBJECT 3,024 4.2% 1,090 36.0% 11 348.1 2516.0
EXACT SUBJECT 826 1.2% 172 20.8% 6 424.3 1980.5
THESAURUS 19 0.0% 9 47.4% 56 44.3 41.4
EXACT THESAURUS 264 0.4% 27 10.2% 40 1503.0 3947.3
KEYWORD 18,993 26.6% 3,861 20.3% 26 948.5 6195.1
SUBFILE 205 0.3% 54 26.3% 24 171.2 467.4
FORM 833 1.2% 207 24.8% 16 148.4 486.5
DATE 965 1.3% 252 26.1% 10 85.6 296.4
ADDED 258 0.4% 176 68.2% 3 55.0 394.4
ARTICLE 142 0.2% 37 26.1% 28 184.1 333.3
AUTHOR AFFIL. 772 1.1% 325 42.1% 9 107.9 574.7
CONFERENCE 255 0.4% 135 52.9% 27 1259.3 10059.5
LANGUAGE 2,754 3.9% 620 22.5% 32 609.4 2360.5
CHEMICAL NAME 461 0.6% 233 50.5% 11 179.3 1267.7
ISSN 5 0.0% 4 80.0% 12 12.0 0.0
ISBN 6 0.0% 6 100% 0 0.0 0.0
ID NUMBER 3 0.0% 0 0.0% 1 1.0 0.0
PRODUCT NUMBER 7 0.0% 5 71.4% 222 222.0 311.1
STANDARD NUMBER 22 0.0% 12 54.5% 1 1.6 1.3
ISN 0 0.0% 0 0.0% 0 0.0 0.0
AT 3,195 4.5% 849 26.6% 18 479.5 2535.5
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 13,590 25.0% 4,547 33.5% 8 298.8 2320.6
Single 40,805 75.0% 9,567 23.4% 16 571.6 4951.0
PRESENT commands, by type:
MARC 43.3%
OPAC 31.8%