MELSRV INSPEC DATABASES Z39.50 SERVER STATISTICS
Time period: 10/01/00 through 10/31/00
1.0 SUMMARY STATISTICS
_______________________
Relative use of INSPEC databases:
Number of
Searches Records Presented
________ _________________
INS (current) 49,960 1,777,741
INS90 17,193 144,755
INS85 14,255 67,778
INS80 13,704 38,026
INS69 14,996 69,294
Per hour usage:
Time Searches Records Presented
_______________ _____________ _________________
12-2 a.m. 4,279 48,666
2-4 a.m. 1,532 18,234
4-6 a.m. 416 11,096
6-8 a.m. 755 20,067
8-10 a.m. 6,400 110,528
10-12 a.m. 17,106 322,795
12-2 p.m. 17,778 335,977
2-4 p.m. 22,692 460,454
4-6 p.m. 19,443 389,555
6-8 p.m. 8,959 182,650
8-10 p.m. 6,291 110,405
10-12 p.m. 4,457 87,167
__________ _____________ _________________
Total: 110,108 2,097,594
1.1 SEARCH commands
____________________
Zero results may indicate no access to the database
Number of SEARCH commands issued by location:
Location Total
________ _____
Berkeley 2,674
Davis 192
Irvine 85
Los Angeles 235
Riverside 13
San Diego 386
San Francisco 80
Santa Barbara 151
Santa Cruz 143
Lawrence Berkeley 220
Lawrence Livermore 299
Los Alamos 0
MELWEB 85,070
Searchlight 20,144
Other - UC 49
Other-Network UC 367
_____
110,108
1.2 Records Presented
______________________
Zero results may indicate no access to the database
Number of Records Presented by location:
Location Total
________ _____
Berkeley 3,840
Davis 2,733
Irvine 3,668
Los Angeles 4,320
Riverside 198
San Diego 2,489
San Francisco 398
Santa Barbara 3,345
Santa Cruz 3,138
Lawrence Berkeley 2,041
Lawrence Livermore 3,367
Los Alamos 0
MELWEB 2,037,631
Searchlight 16,161
Other - UC 43
Other-Network UC 14,222
_____
2,097,594
1.3 Response time
__________________
Search response time from receipt of search request
DLA until transmission of search response:
Average in seconds 1.0
Standard deviation in seconds 5.8
Present response time from receipt of present request
DLA until transmission of a present response:
Average in seconds 0.2
Standard deviation in seconds 0.6
2.0 INSPEC Databases Detailed Statistics
_________________________________________
Median session length (minutes:seconds) 20:50
Average session length (minutes:seconds) 16:56
Longest session recorded (minutes:seconds) 218:13
Average number of searches completed per session 0.0
Retrievals per search - median 2.0
Retrievals per search - average 505.6
Retrievals per search - standard deviation 9276.7
Percent of searches completed with 0 results 35.0%
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 110,108 20.0%
PRESENT 382,526 69.3%
INIT or CLOSE 57,733 10.5%
OTHER 1,418 0.3%
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 34,574 25.3% 10,310 29.8% 9 60.1 496.1
TITLE WORD 22,225 16.3% 8,880 40.0% 3 61.0 352.3
EXACT TITLE 1,228 0.9% 641 52.2% 1 36.7 371.4
JOURNAL 5,158 3.8% 2,542 49.3% 6 1369.8 10331.7
EXACT JOURNAL 1,420 1.0% 605 42.6% 379 3641.2 8867.1
SUBJECT 4,725 3.5% 2,037 43.1% 10 364.3 1845.0
EXACT SUBJECT 1,084 0.8% 265 24.4% 7 310.4 1229.1
THESAURUS 36 0.0% 21 58.3% 14 1720.7 2810.0
EXACT THESAURUS 396 0.3% 68 17.2% 24 516.4 1839.0
KEYWORD 49,623 36.3% 16,667 33.6% 19 1352.7 16406.7
SUBFILE 265 0.2% 64 24.1% 34 833.4 8215.6
FORM 1,646 1.2% 612 37.2% 19 329.7 1549.8
DATE 1,202 0.9% 464 38.6% 10 105.0 433.5
ADDED 614 0.4% 362 59.0% 3 12.1 21.7
ARTICLE 176 0.1% 44 25.0% 37 471.3 2019.8
AUTHOR AFFIL. 1,014 0.7% 420 41.4% 12 107.9 606.8
CONFERENCE 442 0.3% 207 46.8% 28 4201.0 28479.5
LANGUAGE 3,931 2.9% 1,178 30.0% 27 666.3 4962.9
CHEMICAL NAME 352 0.3% 192 54.5% 13 70.0 194.4
ISSN 8 0.0% 7 87.5% 202 202.0 0.0
ISBN 29 0.0% 21 72.4% 63 75.5 47.5
ID NUMBER 2,478 1.8% 2,317 93.5% 1 1.0 0.0
PRODUCT NUMBER 11 0.0% 11 100% 0 0.0 0.0
STANDARD NUMBER 30 0.0% 24 80.0% 1 1.0 0.0
ISN 0 0.0% 0 0.0% 0 0.0 0.0
AT 4,039 3.0% 1,263 31.3% 16 598.5 4960.1
Other indexes 7 0.0% 7 100% 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 21,877 19.9% 8,771 40.1% 6 242.1 2522.7
Single 88,231 80.1% 29,738 33.7% 14 897.6 12658.3
PRESENT commands, by type:
MARC 39.1%
OPAC 35.0%
SINmm/dd srv.ins MELSRV INSPEC DATABASES Z39.50 SERVER STATISTICS (weekly)