MELSRV INSPEC DATABASES Z39.50 SERVER STATISTICS
Time period: 12/02/00 through 12/08/00
1.0 SUMMARY STATISTICS
_______________________
Relative use of INSPEC databases:
Number of
Searches Records Presented
________ _________________
INS (current) 9,910 415,208
INS90 3,463 29,141
INS85 2,927 14,711
INS80 2,753 8,315
INS69 2,799 13,782
Per hour usage:
Time Searches Records Presented
_______________ _____________ _________________
12-2 a.m. 791 14,823
2-4 a.m. 317 7,228
4-6 a.m. 163 5,650
6-8 a.m. 169 3,038
8-10 a.m. 977 25,411
10-12 a.m. 3,318 62,870
12-2 p.m. 3,322 58,705
2-4 p.m. 4,683 104,398
4-6 p.m. 3,605 82,601
6-8 p.m. 2,129 61,892
8-10 p.m. 1,314 25,811
10-12 p.m. 1,064 28,730
__________ _____________ _________________
Total: 21,852 481,157
1.1 SEARCH commands
____________________
Zero results may indicate no access to the database
Number of SEARCH commands issued by location:
Location Total
________ _____
Berkeley 61
Davis 25
Irvine 9
Los Angeles 52
Riverside 0
San Diego 41
San Francisco 15
Santa Barbara 52
Santa Cruz 16
Lawrence Berkeley 31
Lawrence Livermore 18
Los Alamos 0
MELWEB 17,684
Searchlight 3,759
Other - UC 23
Other-Network UC 66
_____
21,852
1.2 Records Presented
______________________
Zero results may indicate no access to the database
Number of Records Presented by location:
Location Total
________ _____
Berkeley 1,131
Davis 501
Irvine 26
Los Angeles 954
Riverside 0
San Diego 248
San Francisco 98
Santa Barbara 598
Santa Cruz 539
Lawrence Berkeley 369
Lawrence Livermore 402
Los Alamos 0
MELWEB 471,101
Searchlight 4,175
Other - UC 357
Other-Network UC 658
_____
481,157
1.3 Response time
__________________
Search response time from receipt of search request
DLA until transmission of search response:
Average in seconds 1.5
Standard deviation in seconds 10.4
Present response time from receipt of present request
DLA until transmission of a present response:
Average in seconds 0.2
Standard deviation in seconds 0.3
2.0 INSPEC Databases Detailed Statistics
_________________________________________
Median session length (minutes:seconds) 21:00
Average session length (minutes:seconds) 17:43
Longest session recorded (minutes:seconds) 203:38
Average number of searches completed per session 0.0
Retrievals per search - median 3.0
Retrievals per search - average 397.9
Retrievals per search - standard deviation 4553.2
Percent of searches completed with 0 results 33.3%
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 21,852 18.9%
PRESENT 81,336 70.5%
INIT or CLOSE 12,001 10.4%
OTHER 199 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 6,717 24.9% 2,028 30.2% 10 64.6 381.3
TITLE WORD 4,166 15.5% 1,554 37.3% 3 227.7 4401.1
EXACT TITLE 311 1.2% 142 45.7% 1 12.8 95.9
JOURNAL 1,028 3.8% 496 48.2% 10 2276.5 9296.1
EXACT JOURNAL 296 1.1% 131 44.3% 350 3133.8 7275.7
SUBJECT 1,137 4.2% 541 47.6% 7 228.3 1413.8
EXACT SUBJECT 155 0.6% 31 20.0% 4 73.9 257.5
THESAURUS 14 0.1% 13 92.9% 3,657 3657.0 0.0
EXACT THESAURUS 55 0.2% 7 12.7% 7 433.3 1116.0
KEYWORD 10,572 39.2% 3,547 33.6% 17 836.8 6941.3
SUBFILE 56 0.2% 27 48.2% 14 531.1 1895.8
FORM 222 0.8% 74 33.3% 25 227.8 904.3
DATE 204 0.8% 53 26.0% 17 221.9 1292.7
ADDED 67 0.2% 34 50.7% 4 13.9 17.8
ARTICLE 4 0.0% 1 25.0% 29 143.7 208.2
AUTHOR AFFIL. 247 0.9% 117 47.4% 11 167.1 1123.9
CONFERENCE 78 0.3% 42 53.8% 42 1480.4 6078.5
LANGUAGE 849 3.2% 246 29.0% 27 1042.6 8023.6
CHEMICAL NAME 169 0.6% 88 52.1% 8 67.7 216.6
ISSN 0 0.0% 0 0.0% 0 0.0 0.0
ISBN 1 0.0% 1 100% 0 0.0 0.0
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 0 0.0% 0 0.0% 0 0.0 0.0
ISN 0 0.0% 0 0.0% 0 0.0 0.0
AT 597 2.2% 189 31.7% 12 306.3 1417.6
Other indexes 4 0.0% 4 100% 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 4,170 19.1% 1,718 41.2% 7 329.5 4057.3
Single 17,682 80.9% 5,557 31.4% 13 650.5 5820.4
PRESENT commands, by type:
MARC 35.2%
OPAC 35.7%
SINmm/dd srv.ins MELSRV INSPEC DATABASES Z39.50 SERVER STATISTICS (weekly)