MELVYL INSPEC DATABASES TELNET STATISTICS
Time period: 06/01/02 through 06/07/02
1.0 SUMMARY STATISTICS
_______________________
1.1 Total sessions:
____________________
Zero results may indicate no access to the database
Location Library Remote Total
________ _______ ______ _____
Berkeley 2 134 136
Davis 44 1 45
Irvine 46 0 46
Los Angeles 0 85 85
Riverside 0 7 7
San Diego 45 98 143
San Francisco 1 0 1
Santa Barbara 0 39 39
Santa Cruz 2 25 27
Lawrence Berkeley 0 14 14
Lawrence Livermore 0 23 23
Los Alamos 0 0 0
Other - UC 2 24 26
Other-Network UC n/a 190 190
_______ ______ _____
142 640 782
Relative use of INSPEC databases:
Number of Number of Number of
Sessions FIND commands Records Displayed
_________ _____________ _________________
INS (current) 486 1,169 8,851
INS90 98 170 1,306
INS85 78 144 1,102
INS80 61 105 445
INS69 59 122 2,376
Per hour usage:
Time Sessions Finds Records Displayed
__________ __________ __________ _________________
12-2 a.m. 9 23 95
2-4 a.m. 11 25 156
4-6 a.m. 16 39 161
6-8 a.m. 25 70 577
8-10 a.m. 93 232 1,776
10-12 a.m. 142 322 2,174
12-2 p.m. 119 227 1,486
2-4 p.m. 131 327 3,798
4-6 p.m. 131 230 2,222
6-8 p.m. 47 105 1,118
8-10 p.m. 29 50 266
10-12 p.m. 29 60 251
__________ __________ __________ _________________
Total: 782 1,710 14,080
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 1 283 284
Davis 84 1 85
Irvine 113 0 113
Los Angeles 0 195 195
Riverside 0 22 22
San Diego 118 235 353
San Francisco 2 0 2
Santa Barbara 0 74 74
Santa Cruz 3 48 51
Lawrence Berkeley 0 31 31
Lawrence Livermore 0 44 44
Los Alamos 0 0 0
Other - UC 1 51 52
Other-Network UC n/a 404 404
_______ ______ _____
322 1,388 1,710
1.3 Records displayed
______________________
Zero results may indicate no access to the database
Number of Records Displayed by location:
Location Library Remote Total
________ _______ ______ _____
Berkeley 39 4,121 4,160
Davis 473 4 477
Irvine 711 0 711
Los Angeles 0 1,611 1,611
Riverside 0 94 94
San Diego 695 1,543 2,238
San Francisco 0 0 0
Santa Barbara 0 352 352
Santa Cruz 40 192 232
Lawrence Berkeley 0 761 761
Lawrence Livermore 0 179 179
Los Alamos 0 0 0
Other - UC 7 387 394
Other-Network UC n/a 2,871 2,871
_______ ______ _____
1,965 12,115 14,080
1.4 Response time
__________________
Search response time from receipt of command at
DLA until transmission of response:
Average in seconds 0.5
Standard deviation in seconds 1.1
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
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Median session length (minutes:seconds) 8:40
Average session length (minutes:seconds) 15:14
Longest session recorded (minutes:seconds) 311:59
Average number of searches completed per session 2.1
Retrievals per search - median 4.0
Retrievals per search - average 159.2
Retrievals per search - standard deviation 1007.3
Percent of searches completed with 0 results 29.5%
Percent of searches entered that are long 6.7%
Percent of long searches completed
(includes partial results) 70.2%
Commands entered, by type, excluding errors:
Total Percentage
__________ __________
FIND 1,569 31.1%
DISPLAY (excluding automatic displays) 1,838 36.5%
BROWSE 2 0.0%
SELECT 0 0.0%
HELP 26 0.5%
EXPLAIN 46 0.9%
SET/RESET 419 8.3%
SHOW 7 0.1%
ADD ON (AND, OR, AND NOT) 141 2.8%
LOGON or LOGOFF 750 14.9%
COMMENT 0 0.0%
SAVE 27 0.5%
USE 0 0.0%
OTHER 216 4.3%
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 724 43.2% 190 26.2% 17 134.4 878.3
TITLE WORD 360 21.5% 166 46.1% 5 83.6 360.3
EXACT TITLE 12 0.7% 5 41.7% 4 44.3 93.7
JOURNAL 37 2.2% 15 40.5% 139 1275.1 3756.2
EXACT JOURNAL 19 1.1% 9 47.4% 83 886.1 2609.3
SUBJECT 87 5.2% 25 28.7% 39 129.5 383.7
EXACT SUBJECT 2 0.1% 0 0.0% 1,844 1843.5 2107.9
THESAURUS 0 0.0% 0 0.0% 0 0.0 0.0
EXACT THESAURUS 0 0.0% 0 0.0% 0 0.0 0.0
KEYWORD 260 15.5% 59 22.7% 20 426.0 1737.9
SUBFILE 2 0.1% 0 0.0% 61 60.5 40.3
FORM 0 0.0% 0 0.0% 0 0.0 0.0
DATE 29 1.7% 11 37.9% 11 261.1 521.8
ADDED 0 0.0% 0 0.0% 0 0.0 0.0
ARTICLE 0 0.0% 0 0.0% 0 0.0 0.0
AUTHOR AFFIL. 11 0.7% 1 9.1% 45 176.8 379.7
CONFERENCE 2 0.1% 0 0.0% 691 691.0 0.0
LANGUAGE 0 0.0% 0 0.0% 0 0.0 0.0
CHEMICAL NAME 2 0.1% 0 0.0% 37 36.5 47.4
ISSN 6 0.4% 4 66.7% 8,311 8311.0 0.0
ISBN 1 0.1% 1 100% 0 0.0 0.0
ID NUMBER 0 0.0% 0 0.0% 0 0.0 0.0
PERIODICAL 100 6.0% 17 17.0% 6 197.7 915.4
EXACT PE 20 1.2% 0 0.0% 2 45.7 180.4
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 0 0.0% 0 0.0% 0 0.0 0.0
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 131 8.5% 56 42.7% 4 96.5 306.2
Single 1,411 91.5% 390 27.6% 16 244.9 1273.0
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 2 100% 0 0.0% 2 1.5 0.7
EXACT THESAURUS 0 0.0% 0 0.0% 0 0.0 0.0
DISPLAY commands, by type, excluding automatic displays:
REVIEW 5.8%
SHORT 79.3%
LONG 2.4%
TAGS 0.9%
FIELDS 1.6%
BROWSE REVIEW 0.0%
BROWSE LONG 0.0%
PERIODICALS 8.9%
COMMENTS 0.0%
Other 1.1%
2.2 Error, EXPLAIN and HELP statistics
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Percent of commands that contained errors 9.8%
Ten most frequent errors:
1. NS command - no next screen 40.0%
2. First word of command is invalid 24.4%
3. 167 9.7%
4. FIND command with invalid index name 6.2%
5. NS of SHOW/EXP command-no next screen 2.8%
6. DISPLAY command contains invalid word 2.6%
7. DISPLAY command - no FIND results 2.0%
8. Valid command at an inappropriate time 1.8%
9. Add-on search, no index name after verb 1.8%
10. PS command - no previous screen 0.9%
11. All others 7.7%
Ten most frequent EXPLAIN requests:
1. FIND (INSPEC DBS) 17.4%
2. INSPEC BACKFILES 15.2%
3. INDEXES (INSPEC DBS) 13.0%
4. GUIDE (INSPEC DBS) 8.7%
5. 1752 8.7%
6. INSPEC DATABASES 6.5%
7. COMMANDS (INS/PSY/ABI/BIO DBS) 6.5%
8. DISPLAY (INS/PSY DBS) 4.3%
9. Unrecognized term 4.3%
10. LOCATE (INS/PSY DBS) 2.2%
11. All others 13.0%
Ten most frequent HELP situations:
1. Help requested from SET DB command 22.2%
2. FIND command with zero results 11.1%
3. First word of command is invalid 8.3%
4. NS command - no next screen 8.3%
5. FIND command with invalid index name 8.3%
6. Multi-index search with zero results 6.9%
7. FIND command retrieves >1 book 5.6%
8. Add-on without index name after verb 4.2%
9. DISPLAY command - last of >1 screen 4.2%
10. NS of SHOW/EXP command-no next screen 4.2%
11. All others 16.7%
Ten most frequent SHOW requests:
1. HISTORY 42.9%
2. SEARCH 28.6%
3. INSPEC NEWS 14.3%
4. SYSTEM NEWS 14.3%
11. All others 0.0%
INSmm/dd ins MELVYL INSPEC DATABASES TELNET STATISTICS (weekly)