MELSRV INSPEC DATABASES Z39.50 SERVER STATISTICS
Time period: 12/01/01 through 12/31/01
1.0 SUMMARY STATISTICS
_______________________
Relative use of INSPEC databases:
Number of
Searches Records Presented
________ _________________
INS (current) 30,342 1,104,044
INS90 10,058 83,111
INS85 8,463 46,500
INS80 7,889 27,611
INS69 8,260 45,341
Per hour usage:
Time Searches Records Presented
_______________ _____________ _________________
12-2 a.m. 2,194 29,056
2-4 a.m. 839 15,229
4-6 a.m. 401 11,165
6-8 a.m. 701 11,315
8-10 a.m. 3,325 66,643
10-12 a.m. 9,479 223,691
12-2 p.m. 10,358 196,113
2-4 p.m. 13,543 267,234
4-6 p.m. 11,747 236,264
6-8 p.m. 5,573 118,829
8-10 p.m. 3,663 73,815
10-12 p.m. 3,189 57,253
__________ _____________ _________________
Total: 65,012 1,306,607
1.1 SEARCH commands
____________________
Zero results may indicate no access to the database
Number of SEARCH commands issued by location:
Location Total
________ _____
Berkeley 300
Davis 150
Irvine 139
Los Angeles 155
Riverside 1
San Diego 426
San Francisco 11
Santa Barbara 365
Santa Cruz 12
Lawrence Berkeley 91
Lawrence Livermore 121
Los Alamos 0
MELWEB 0
Searchlight 7,660
Other - UC 55,399
Other-Network UC 182
_____
65,012
1.2 Records Presented
______________________
Zero results may indicate no access to the database
Number of Records Presented by location:
Location Total
________ _____
Berkeley 3,812
Davis 1,951
Irvine 2,702
Los Angeles 1,433
Riverside 0
San Diego 1,561
San Francisco 38
Santa Barbara 4,384
Santa Cruz 159
Lawrence Berkeley 1,465
Lawrence Livermore 1,215
Los Alamos 0
MELWEB 0
Searchlight 0
Other - UC 1,285,052
Other-Network UC 2,835
_____
1,306,607
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 6.7
Present response time from receipt of present request
DLA until transmission of a present response:
Average in seconds 0.2
Standard deviation in seconds 0.3
2.0 INSPEC Databases Detailed Statistics
_________________________________________
Median session length (minutes:seconds) 21:19
Average session length (minutes:seconds) 19:09
Longest session recorded (minutes:seconds) 250:44
Average number of searches completed per session 0.0
Retrievals per search - median 2.0
Retrievals per search - average 353.2
Retrievals per search - standard deviation 4159.1
Percent of searches completed with 0 results 34.0%
Percent of searches entered that are long 0.8%
Percent of long searches completed
(includes partial results) 100%
Commands entered, by type, excluding errors:
Total Percentage
__________ __________
SEARCH 65,012 19.4%
PRESENT 235,643 70.4%
INIT or CLOSE 33,724 10.1%
OTHER 418 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 22,785 28.9% 6,811 29.9% 9 54.1 344.9
TITLE WORD 14,375 18.3% 6,117 42.6% 3 74.2 489.0
EXACT TITLE 1,251 1.6% 765 61.1% 1 6.9 56.6
JOURNAL 2,785 3.5% 1,288 46.2% 7 1613.8 8856.5
EXACT JOURNAL 691 0.9% 278 40.2% 389 4919.8 12970.7
SUBJECT 2,296 2.9% 1,149 50.0% 9 465.4 2894.5
EXACT SUBJECT 378 0.5% 113 29.9% 9 253.5 926.1
THESAURUS 11 0.0% 6 54.5% 3 3.0 2.0
EXACT THESAURUS 90 0.1% 12 13.3% 18 1469.2 6540.7
KEYWORD 28,121 35.7% 9,090 32.3% 15 862.2 6880.8
SUBFILE 62 0.1% 10 16.1% 31 392.7 1386.5
FORM 566 0.7% 167 29.5% 17 234.9 839.8
DATE 751 1.0% 206 27.4% 10 307.7 943.8
ADDED 350 0.4% 189 54.0% 3 13.0 21.6
ARTICLE 42 0.1% 5 11.9% 32 752.0 1791.3
AUTHOR AFFIL. 695 0.9% 284 40.9% 10 68.8 457.7
CONFERENCE 155 0.2% 55 35.5% 16 492.4 1208.7
LANGUAGE 1,444 1.8% 412 28.5% 17 534.0 2842.6
CHEMICAL NAME 381 0.5% 197 51.7% 8 93.9 439.8
ISSN 9 0.0% 2 22.2% 1,121 1401.3 1047.9
ISBN 10 0.0% 3 30.0% 26 143.3 177.9
ID NUMBER 0 0.0% 0 0.0% 0 0.0 0.0
PRODUCT NUMBER 0 0.0% 0 0.0% 0 0.0 0.0
STANDARD NUMBER 4 0.0% 4 100% 0 0.0 0.0
ISN 0 0.0% 0 0.0% 0 0.0 0.0
AT 1,483 1.9% 556 37.5% 14 303.1 1401.0
Other indexes 14 0.0% 12 85.7% 1 1.0 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 12,037 18.5% 4,979 41.4% 5 146.0 1202.8
Single 52,975 81.5% 17,102 32.3% 12 611.4 5559.9
PRESENT commands, by type:
MARC 37.7%
OPAC 36.1%
SINmm/dd srv.ins MELSRV INSPEC DATABASES Z39.50 SERVER STATISTICS (weekly)