MELSRV INSPEC DATABASES Z39.50 SERVER STATISTICS
Time period: 03/01/01 through 03/31/01
1.0 SUMMARY STATISTICS
_______________________
Relative use of INSPEC databases:
Number of
Searches Records Presented
________ _________________
INS (current) 45,719 1,683,532
INS90 16,719 141,102
INS85 13,932 65,576
INS80 13,089 45,323
INS69 13,226 61,022
Per hour usage:
Time Searches Records Presented
_______________ _____________ _________________
12-2 a.m. 2,795 55,376
2-4 a.m. 1,261 27,566
4-6 a.m. 657 16,953
6-8 a.m. 1,015 34,644
8-10 a.m. 6,081 131,179
10-12 a.m. 15,352 294,864
12-2 p.m. 15,436 289,258
2-4 p.m. 19,736 357,193
4-6 p.m. 18,210 355,938
6-8 p.m. 10,489 213,868
8-10 p.m. 6,557 126,134
10-12 p.m. 5,096 93,582
__________ _____________ _________________
Total: 102,685 1,996,555
1.1 SEARCH commands
____________________
Zero results may indicate no access to the database
Number of SEARCH commands issued by location:
Location Total
________ _____
Berkeley 374
Davis 339
Irvine 152
Los Angeles 344
Riverside 20
San Diego 983
San Francisco 106
Santa Barbara 330
Santa Cruz 13
Lawrence Berkeley 72
Lawrence Livermore 50
Los Alamos 0
MELWEB 81,714
Searchlight 17,780
Other - UC 80
Other-Network UC 328
_____
102,685
1.2 Records Presented
______________________
Zero results may indicate no access to the database
Number of Records Presented by location:
Location Total
________ _____
Berkeley 4,894
Davis 2,398
Irvine 3,417
Los Angeles 2,471
Riverside 86
San Diego 5,294
San Francisco 438
Santa Barbara 2,480
Santa Cruz 990
Lawrence Berkeley 1,496
Lawrence Livermore 4,305
Los Alamos 0
MELWEB 1,947,402
Searchlight 8,347
Other - UC 1,694
Other-Network UC 10,843
_____
1,996,555
1.3 Response time
__________________
Search response time from receipt of search request
DLA until transmission of search response:
Average in seconds 1.2
Standard deviation in seconds 6.3
Present response time from receipt of present request
DLA until transmission of a present response:
Average in seconds 0.2
Standard deviation in seconds 0.5
2.0 INSPEC Databases Detailed Statistics
_________________________________________
Median session length (minutes:seconds) 20:58
Average session length (minutes:seconds) 17:21
Longest session recorded (minutes:seconds) 230:31
Average number of searches completed per session 0.0
Retrievals per search - median 3.0
Retrievals per search - average 347.4
Retrievals per search - standard deviation 3875.0
Percent of searches completed with 0 results 34.4%
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 102,685 19.8%
PRESENT 359,907 69.3%
INIT or CLOSE 55,786 10.7%
OTHER 1,183 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 33,370 26.2% 10,550 31.6% 9 65.5 505.7
TITLE WORD 21,623 17.0% 9,107 42.1% 3 100.8 1588.9
EXACT TITLE 1,091 0.9% 500 45.8% 1 27.3 270.4
JOURNAL 5,116 4.0% 2,537 49.6% 9 2302.9 9527.5
EXACT JOURNAL 1,104 0.9% 439 39.8% 590 5512.5 11761.6
SUBJECT 4,342 3.4% 1,944 44.8% 10 257.5 1932.9
EXACT SUBJECT 748 0.6% 187 25.0% 7 464.2 3983.4
THESAURUS 9 0.0% 6 66.7% 2 3.0 2.6
EXACT THESAURUS 163 0.1% 18 11.0% 21 984.9 2903.5
KEYWORD 47,647 37.5% 16,114 33.8% 17 709.8 5960.3
SUBFILE 148 0.1% 44 29.7% 17 354.8 1018.9
FORM 1,392 1.1% 486 34.9% 18 409.4 3199.5
DATE 1,068 0.8% 315 29.5% 8 70.4 446.6
ADDED 350 0.3% 206 58.9% 3 11.4 17.9
ARTICLE 101 0.1% 15 14.9% 67 401.7 872.2
AUTHOR AFFIL. 1,138 0.9% 573 50.3% 11 85.0 488.5
CONFERENCE 250 0.2% 109 43.6% 266 752.3 3757.3
LANGUAGE 3,117 2.5% 968 31.1% 22 597.9 3428.6
CHEMICAL NAME 748 0.6% 426 56.9% 14 399.7 3245.8
ISSN 16 0.0% 12 75.0% 69 69.0 0.0
ISBN 16 0.0% 8 50.0% 217 205.9 127.0
ID NUMBER 0 0.0% 0 0.0% 0 0.0 0.0
PRODUCT NUMBER 1 0.0% 1 100% 0 0.0 0.0
STANDARD NUMBER 19 0.0% 9 47.4% 1 1.0 0.0
ISN 0 0.0% 0 0.0% 0 0.0 0.0
AT 3,585 2.8% 1,209 33.7% 17 691.0 4473.9
Other indexes 17 0.0% 16 94.1% 2 2.0 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 20,634 20.1% 8,813 42.7% 6 244.3 2305.2
Single 82,051 79.9% 26,552 32.4% 13 590.7 5149.0
PRESENT commands, by type:
MARC 39.2%
OPAC 33.2%
SINmm/dd srv.ins MELSRV INSPEC DATABASES Z39.50 SERVER STATISTICS (weekly)