MELSRV INSPEC DATABASES Z39.50 SERVER STATISTICS
Time period: 02/01/00 through 02/29/00
1.0 SUMMARY STATISTICS
_______________________
Relative use of INSPEC databases:
Number of
Searches Records Presented
________ _________________
INS (current) 44,150 1,818,607
INS90 12,086 168,464
INS85 8,944 79,648
INS80 7,728 50,917
INS69 7,791 69,714
Per hour usage:
Time Searches Records Presented
_______________ _____________ _________________
12-2 a.m. 1,952 44,351
2-4 a.m. 918 17,899
4-6 a.m. 369 8,854
6-8 a.m. 828 25,849
8-10 a.m. 4,737 128,714
10-12 a.m. 12,060 319,878
12-2 p.m. 12,386 343,314
2-4 p.m. 15,868 433,979
4-6 p.m. 14,975 409,039
6-8 p.m. 7,558 217,049
8-10 p.m. 5,010 136,365
10-12 p.m. 4,038 102,059
__________ _____________ _________________
Total: 80,699 2,187,350
1.1 SEARCH commands
____________________
Zero results may indicate no access to the database
Number of SEARCH commands issued by location:
Location Total
________ _____
Berkeley 1,150
Davis 48
Irvine 124
Los Angeles 119
Riverside 10
San Diego 1,515
San Francisco 94
Santa Barbara 154
Santa Cruz 3
Lawrence Berkeley 157
Lawrence Livermore 183
Los Alamos 0
MELWEB 76,116
Searchlight 459
Other - UC 110
Other-Network UC 457
_____
80,699
1.2 Records Presented
______________________
Zero results may indicate no access to the database
Number of Records Presented by location:
Location Total
________ _____
Berkeley 29,265
Davis 221
Irvine 1,702
Los Angeles 1,669
Riverside 94
San Diego 1,174
San Francisco 611
Santa Barbara 2,152
Santa Cruz 7
Lawrence Berkeley 2,548
Lawrence Livermore 8,194
Los Alamos 0
MELWEB 2,118,873
Searchlight 7,568
Other - UC 1
Other-Network UC 13,271
_____
2,187,350
1.3 Response time
__________________
Search response time from receipt of search request
DLA until transmission of search response:
Average in seconds 2.1
Standard deviation in seconds 8.6
Present response time from receipt of present request
DLA until transmission of a present response:
Average in seconds 0.3
Standard deviation in seconds 0.8
2.0 INSPEC Databases Detailed Statistics
_________________________________________
Median session length (minutes:seconds) 22:24
Average session length (minutes:seconds) 23:04
Longest session recorded (minutes:seconds) 217:08
Average number of searches completed per session 0.0
Retrievals per search - median 4.0
Retrievals per search - average 365.8
Retrievals per search - standard deviation 3940.3
Percent of searches completed with 0 results 29.5%
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 80,699 16.1%
PRESENT 385,874 76.8%
INIT or CLOSE 34,840 6.9%
OTHER 812 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 29,557 28.0% 8,738 29.6% 8 59.2 398.9
TITLE WORD 18,961 18.0% 6,977 36.8% 4 73.2 570.1
EXACT TITLE 1,385 1.3% 702 50.7% 1 23.3 181.3
JOURNAL 5,266 5.0% 2,549 48.4% 6 1250.6 10758.5
EXACT JOURNAL 1,348 1.3% 548 40.7% 328 3194.2 8182.5
SUBJECT 4,276 4.1% 1,770 41.4% 12 248.0 1182.8
EXACT SUBJECT 917 0.9% 187 20.4% 5 179.8 861.3
THESAURUS 41 0.0% 29 70.7% 8 38.1 81.1
EXACT THESAURUS 343 0.3% 52 15.2% 32 944.4 3175.0
KEYWORD 29,854 28.3% 7,074 23.7% 23 893.1 6096.2
SUBFILE 257 0.2% 105 40.9% 28 1071.1 10799.9
FORM 1,095 1.0% 363 33.1% 22 334.9 1877.0
DATE 1,082 1.0% 342 31.6% 21 202.1 1481.3
ADDED 508 0.5% 351 69.1% 3 13.3 24.6
ARTICLE 114 0.1% 31 27.2% 37 401.8 1258.3
AUTHOR AFFIL. 920 0.9% 447 48.6% 9 76.9 443.2
CONFERENCE 294 0.3% 105 35.7% 54 1118.3 5101.2
LANGUAGE 3,399 3.2% 843 24.8% 32 628.8 3595.7
CHEMICAL NAME 616 0.6% 341 55.4% 9 282.6 1093.7
ISSN 4 0.0% 1 25.0% 452 705.0 727.3
ISBN 1 0.0% 1 100% 0 0.0 0.0
ID NUMBER 4 0.0% 2 50.0% 1 1.0 0.0
PRODUCT NUMBER 0 0.0% 0 0.0% 0 0.0 0.0
STANDARD NUMBER 37 0.0% 33 89.2% 2 1.5 0.6
ISN 0 0.0% 0 0.0% 0 0.0 0.0
AT 5,083 4.8% 1,581 31.1% 16 452.1 2851.1
Other indexes 17 0.0% 12 70.6% 20 587.2 1154.9
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 19,880 24.6% 7,581 38.1% 6 247.8 2364.9
Single 60,819 75.4% 16,189 26.6% 14 593.1 5138.7
PRESENT commands, by type:
MARC 39.2%
OPAC 36.5%
SINmm/dd srv.ins MELSRV INSPEC DATABASES Z39.50 SERVER STATISTICS (weekly)