MELVYL INSPEC DATABASES TELNET STATISTICS
Time period: 12/01/00 through 12/31/00
1.0 SUMMARY STATISTICS
_______________________
1.1 Total sessions:
____________________
Zero results may indicate no access to the database
Location Library Remote Total
________ _______ ______ _____
Berkeley 12 1,466 1,478
Davis 158 6 164
Irvine 248 0 248
Los Angeles 34 594 628
Riverside 12 59 71
San Diego 189 517 706
San Francisco 66 0 66
Santa Barbara 49 246 295
Santa Cruz 16 78 94
Lawrence Berkeley 0 239 239
Lawrence Livermore 0 151 151
Los Alamos 0 0 0
Other - UC 2 222 224
Other-Network UC n/a 1,477 1,477
_______ ______ _____
786 5,055 5,841
Relative use of INSPEC databases:
Number of Number of Number of
Sessions FIND commands Records Displayed
_________ _____________ _________________
INS (current) 3,755 9,394 79,441
INS90 814 1,446 7,524
INS85 531 882 4,394
INS80 381 680 3,415
INS69 360 815 4,735
Per hour usage:
Time Sessions Finds Records Displayed
__________ __________ __________ _________________
12-2 a.m. 135 367 2,978
2-4 a.m. 110 199 963
4-6 a.m. 110 271 1,757
6-8 a.m. 211 519 4,146
8-10 a.m. 765 1,645 11,508
10-12 a.m. 933 2,145 16,937
12-2 p.m. 855 1,790 13,078
2-4 p.m. 1,032 2,357 19,681
4-6 p.m. 928 2,049 14,378
6-8 p.m. 384 917 7,240
8-10 p.m. 206 456 2,782
10-12 p.m. 172 502 4,061
__________ __________ __________ _________________
Total: 5,841 13,217 99,509
1.2 FIND commands
__________________
Zero results may indicate no access to the database
Number of FIND commands issued by location:
Location Library Remote Total
________ _______ ______ _____
Berkeley 16 3,332 3,348
Davis 383 14 397
Irvine 956 0 956
Los Angeles 59 1,340 1,399
Riverside 17 109 126
San Diego 458 1,330 1,788
San Francisco 221 0 221
Santa Barbara 139 585 724
Santa Cruz 41 145 186
Lawrence Berkeley 0 555 555
Lawrence Livermore 0 377 377
Los Alamos 0 0 0
Other - UC 4 480 484
Other-Network UC n/a 2,656 2,656
_______ ______ _____
2,294 10,923 13,217
1.3 Records displayed
______________________
Zero results may indicate no access to the database
Number of Records Displayed by location:
Location Library Remote Total
________ _______ ______ _____
Berkeley 65 23,362 23,427
Davis 4,207 224 4,431
Irvine 11,609 0 11,609
Los Angeles 808 10,455 11,263
Riverside 53 1,165 1,218
San Diego 1,631 10,785 12,416
San Francisco 1,444 0 1,444
Santa Barbara 721 5,564 6,285
Santa Cruz 261 790 1,051
Lawrence Berkeley 0 4,767 4,767
Lawrence Livermore 0 3,189 3,189
Los Alamos 0 0 0
Other - UC 1 4,044 4,045
Other-Network UC n/a 14,364 14,364
_______ ______ _____
20,800 78,709 99,509
1.4 Response time
__________________
Search response time from receipt of command at
DLA until transmission of response:
Average in seconds 0.8
Standard deviation in seconds 4.1
Display response time from receipt of command at
DLA until transmission of a complete screen:
Average in seconds 0.1
Standard deviation in seconds 0.1
2.0 INSPEC Databases Detailed Statistics
_________________________________________
Median session length (minutes:seconds) 7:11
Average session length (minutes:seconds) 12:19
Longest session recorded (minutes:seconds) 628:31
Average number of searches completed per session 2.2
Retrievals per search - median 6.0
Retrievals per search - average 582.7
Retrievals per search - standard deviation 11970
Percent of searches completed with 0 results 28.0%
Percent of searches entered that are long 5.3%
Percent of long searches completed
(includes partial results) 75.1%
Commands entered, by type, excluding errors:
Total Percentage
__________ __________
FIND 12,166 31.7%
DISPLAY (excluding automatic displays) 13,635 35.6%
BROWSE 41 0.1%
SELECT 0 0.0%
HELP 300 0.8%
EXPLAIN 482 1.3%
SET/RESET 3,457 9.0%
SHOW 130 0.3%
ADD ON (AND, OR, AND NOT) 1,051 2.7%
LOGON or LOGOFF 5,084 13.3%
COMMENT 0 0.0%
SAVE 467 1.2%
USE 16 0.0%
OTHER 1,556 4.1%
FINDs completed: RETRIEVALS PER NON-
TOTAL ZERO RESULTS ZERO RESULT SEARCHES
_____________ ______________ ______________________
% of % of
all all for Std.
No. FINDs No. Index Median Avg. Dev.
______ ______ ______ _______ ______ _______ _______
By index:
PERSONAL AUTHOR 5,931 44.5% 1,414 23.8% 16 82.0 315.7
TITLE WORD 2,882 21.6% 1,302 45.2% 6 216.0 2330.2
EXACT TITLE 54 0.4% 34 63.0% 1 84.2 223.4
JOURNAL 367 2.8% 155 42.2% 140 2099.5 7130.6
EXACT JOURNAL 126 0.9% 62 49.2% 12 1104.6 4619.6
SUBJECT 448 3.4% 107 23.9% 37 477.7 3230.7
EXACT SUBJECT 39 0.3% 8 20.5% 7 2276.7 5180.0
THESAURUS 14 0.1% 4 28.6% 368 4415.0 5541.4
EXACT THESAURUS 2 0.0% 0 0.0% 1,835 1835.0 1391.6
KEYWORD 2,517 18.9% 517 20.5% 30 2261.6 25032.0
SUBFILE 17 0.1% 1 5.9% 40 55.3 70.4
FORM 86 0.6% 23 26.7% 12 70.9 177.0
DATE 175 1.3% 53 30.3% 15 252.5 902.7
ADDED 23 0.2% 10 43.5% 7 10.8 10.5
ARTICLE 0 0.0% 0 0.0% 0 0.0 0.0
AUTHOR AFFIL. 151 1.1% 43 28.5% 16 328.5 1226.6
CONFERENCE 47 0.4% 25 53.2% 139 615.2 1231.2
LANGUAGE 2 0.0% 0 0.0% 5 5.0 1.4
CHEMICAL NAME 16 0.1% 5 31.3% 54 113.5 146.4
ISSN 3 0.0% 2 66.7% 14 14.0 0.0
ISBN 1 0.0% 0 0.0% 201 201.0 0.0
ID NUMBER 3 0.0% 0 0.0% 1 1.0 0.0
PERIODICAL 375 2.8% 94 25.1% 6 189.2 1650.6
EXACT PE 26 0.2% 7 26.9% 3 48.4 145.7
RPE 0 0.0% 0 0.0% 0 0.0 0.0
XRP 0 0.0% 0 0.0% 0 0.0 0.0
COMMENTS 0 0.0% 0 0.0% 0 0.0 0.0
Other indexes 17 0.1% 2 11.8% 9 25.2 32.9
RETRIEVALS PER NON-
TOTAL ZERO RESULTS ZERO RESULT SEARCHES
_____________ ______________ ______________________
% of % of
all all for Std.
No. FINDs No. Index Median Avg. Dev.
______ ______ ______ _______ ______ _______ _______
By number of indexes:
Multiple 1,276 10.6% 479 37.5% 8 248.5 2242.2
Single 10,742 89.4% 2,903 27.0% 19 736.6 12773.3
BROWSEs completed: RETRIEVALS PER NON-
TOTAL ZERO RESULTS ZERO RESULT SEARCHES
_____________ ______________ ______________________
% of % of
all all for Std.
No. BROWSEs No. Index Median Avg. Dev.
______ _______ ______ _______ ______ _______ _______
By index:
THESAURUS 39 95.1% 13 33.3% 7 11.3 15.9
EXACT THESAURUS 2 4.9% 2 100% 0 0.0 0.0
DISPLAY commands, by type, excluding automatic displays:
REVIEW 2.8%
SHORT 84.4%
LONG 2.7%
TAGS 0.2%
FIELDS 4.7%
BROWSE REVIEW 0.2%
BROWSE LONG 0.0%
PERIODICALS 3.9%
COMMENTS 0.0%
Other 1.1%
2.2 Error, EXPLAIN and HELP statistics
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Percent of commands that contained errors 9.1%
Ten most frequent errors:
1. NS command - no next screen 42.2%
2. First word of command is invalid 29.2%
3. FIND command with invalid index name 6.2%
4. DISPLAY command contains invalid word 3.2%
5. Max. # of ports to a Z39 db are in use 2.5%
6. NS of SHOW/EXP command-no next screen 1.7%
7. PS command - no previous screen 1.5%
8. Search term missing from search command 1.3%
9. Valid command at an inappropriate time 1.3%
10. Command contains escape or arrow key 0.8%
11. All others 10.0%
Ten most frequent EXPLAIN requests:
1. FIND (INSPEC DBS) 15.1%
2. INSPEC DATABASES 10.0%
3. GUIDE (INSPEC DBS) 8.7%
4. LOCATE (INS/PSY DBS) 6.2%
5. DATABASES 6.2%
6. INDEXES (INSPEC DBS) 5.6%
7. Unrecognized term 5.6%
8. INSPEC BACKFILES 5.2%
9. COMMANDS (INS/PSY/ABI/BIO DBS) 4.1%
10. 1752 3.7%
11. All others 29.5%
Ten most frequent HELP situations:
1. Help requested from SET DB command 21.9%
2. First word of command is invalid 14.1%
3. DISPLAY command - middle of >1 screen 7.9%
4. FIND command with zero results 6.4%
5. FIND command with invalid index name 5.9%
6. DISPLAY command-first of >1 screen 5.9%
7. FIND command retrieves >1 book 5.5%
8. NS command - no next screen 5.0%
9. DISPLAY command - last of >1 screen 4.3%
10. DISPLAY command-complete in one screen 3.7%
11. All others 19.4%
Ten most frequent SHOW requests:
1. HISTORY 47.4%
2. MAIL STATUS 13.8%
3. SEARCH 11.2%
4. INSPEC LOADING STATISTICS 7.8%
5. GLOSSARY 7.8%
6. UPDATE 3.4%
7. SETTINGS (INS/PSY DBS) 2.6%
8. INSPEC NEWS 2.6%
9. DATABASES 1.7%
10. INSPEC STATISTICS 0.9%
11. All others 0.9%
INSmm/dd ins MELVYL INSPEC DATABASES TELNET STATISTICS (weekly)