MELVYL INSPEC DATABASES TELNET STATISTICS
Time period: 05/18/02 through 05/24/02
1.0 SUMMARY STATISTICS
_______________________
1.1 Total sessions:
____________________
Zero results may indicate no access to the database
Location Library Remote Total
________ _______ ______ _____
Berkeley 9 158 167
Davis 39 5 44
Irvine 51 0 51
Los Angeles 1 109 110
Riverside 0 14 14
San Diego 41 89 130
San Francisco 4 0 4
Santa Barbara 1 11 12
Santa Cruz 4 40 44
Lawrence Berkeley 0 25 25
Lawrence Livermore 0 13 13
Los Alamos 0 0 0
Other - UC 0 39 39
Other-Network UC n/a 167 167
_______ ______ _____
150 670 820
Relative use of INSPEC databases:
Number of Number of Number of
Sessions FIND commands Records Displayed
_________ _____________ _________________
INS (current) 505 1,328 14,882
INS90 110 180 1,026
INS85 84 142 658
INS80 62 97 398
INS69 59 115 851
Per hour usage:
Time Sessions Finds Records Displayed
__________ __________ __________ _________________
12-2 a.m. 25 43 290
2-4 a.m. 27 57 441
4-6 a.m. 7 19 183
6-8 a.m. 19 57 394
8-10 a.m. 106 180 2,267
10-12 a.m. 146 367 4,558
12-2 p.m. 99 241 1,950
2-4 p.m. 169 432 3,805
4-6 p.m. 114 231 1,857
6-8 p.m. 42 119 960
8-10 p.m. 55 100 981
10-12 p.m. 11 16 129
__________ __________ __________ _________________
Total: 820 1,862 17,815
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 13 424 437
Davis 81 7 88
Irvine 187 0 187
Los Angeles 1 202 203
Riverside 0 31 31
San Diego 91 238 329
San Francisco 4 0 4
Santa Barbara 1 23 24
Santa Cruz 22 75 97
Lawrence Berkeley 0 47 47
Lawrence Livermore 0 33 33
Los Alamos 0 0 0
Other - UC 0 72 72
Other-Network UC n/a 310 310
_______ ______ _____
400 1,462 1,862
1.3 Records displayed
______________________
Zero results may indicate no access to the database
Number of Records Displayed by location:
Location Library Remote Total
________ _______ ______ _____
Berkeley 35 3,946 3,981
Davis 556 13 569
Irvine 3,703 0 3,703
Los Angeles 0 2,732 2,732
Riverside 0 350 350
San Diego 713 2,134 2,847
San Francisco 0 0 0
Santa Barbara 24 417 441
Santa Cruz 18 289 307
Lawrence Berkeley 0 266 266
Lawrence Livermore 0 210 210
Los Alamos 0 0 0
Other - UC 0 642 642
Other-Network UC n/a 1,767 1,767
_______ ______ _____
5,049 12,766 17,815
1.4 Response time
__________________
Search response time from receipt of command at
DLA until transmission of response:
Average in seconds 0.9
Standard deviation in seconds 2.5
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) 11:26
Average session length (minutes:seconds) 13:43
Longest session recorded (minutes:seconds) 250:18
Average number of searches completed per session 2.2
Retrievals per search - median 7.0
Retrievals per search - average 238.2
Retrievals per search - standard deviation 1620.6
Percent of searches completed with 0 results 25.4%
Percent of searches entered that are long 4.7%
Percent of long searches completed
(includes partial results) 71.3%
Commands entered, by type, excluding errors:
Total Percentage
__________ __________
FIND 1,758 31.3%
DISPLAY (excluding automatic displays) 2,215 39.4%
BROWSE 1 0.0%
SELECT 1 0.0%
HELP 41 0.7%
EXPLAIN 49 0.9%
SET/RESET 441 7.9%
SHOW 22 0.4%
ADD ON (AND, OR, AND NOT) 104 1.9%
LOGON or LOGOFF 788 14.0%
COMMENT 0 0.0%
SAVE 6 0.1%
USE 0 0.0%
OTHER 191 3.4%
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 832 43.3% 207 24.9% 16 79.3 292.4
TITLE WORD 293 15.2% 108 36.9% 13 86.4 297.3
EXACT TITLE 14 0.7% 7 50.0% 1 96.9 252.7
JOURNAL 40 2.1% 13 32.5% 16 671.4 1489.4
EXACT JOURNAL 17 0.9% 7 41.2% 7 171.4 368.8
SUBJECT 86 4.5% 20 23.3% 14 380.1 925.4
EXACT SUBJECT 3 0.2% 0 0.0% 544 372.0 315.4
THESAURUS 1 0.1% 0 0.0% 3,168 3168.0 0.0
EXACT THESAURUS 0 0.0% 0 0.0% 0 0.0 0.0
KEYWORD 475 24.7% 86 18.1% 25 792.3 3379.6
SUBFILE 0 0.0% 0 0.0% 0 0.0 0.0
FORM 0 0.0% 0 0.0% 0 0.0 0.0
DATE 20 1.0% 4 20.0% 25 73.0 104.2
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. 59 3.1% 16 27.1% 34 129.5 257.7
CONFERENCE 12 0.6% 4 33.3% 286 948.4 1276.3
LANGUAGE 0 0.0% 0 0.0% 0 0.0 0.0
CHEMICAL NAME 14 0.7% 8 57.1% 6 58.2 94.6
ISSN 0 0.0% 0 0.0% 0 0.0 0.0
ISBN 0 0.0% 0 0.0% 0 0.0 0.0
ID NUMBER 0 0.0% 0 0.0% 0 0.0 0.0
PERIODICAL 36 1.9% 5 13.9% 4 37.1 93.4
EXACT PE 14 0.7% 1 7.1% 2 18.5 54.4
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 7 0.4% 0 0.0% 6 8.0 7.7
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 187 10.8% 57 30.5% 7 38.5 79.3
Single 1,546 89.2% 372 24.1% 20 366.0 2014.8
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 0 0.0% 0 0.0% 0 0.0 0.0
EXACT THESAURUS 1 100% 0 0.0% 3 3.0 0.0
DISPLAY commands, by type, excluding automatic displays:
REVIEW 3.8%
SHORT 81.5%
LONG 8.4%
TAGS 0.3%
FIELDS 2.0%
BROWSE REVIEW 0.0%
BROWSE LONG 0.0%
PERIODICALS 3.1%
COMMENTS 0.0%
Other 1.0%
2.2 Error, EXPLAIN and HELP statistics
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Percent of commands that contained errors 7.8%
Ten most frequent errors:
1. NS command - no next screen 47.4%
2. First word of command is invalid 27.4%
3. FIND command with invalid index name 6.5%
4. DISPLAY command contains invalid word 3.6%
5. NS of SHOW/EXP command-no next screen 1.7%
6. Valid command at an inappropriate time 1.1%
7. DISPLAY command - no FIND results 1.1%
8. DISPLAY command-record numbers too large 1.1%
9. PS command - no previous screen 1.1%
10. Invalid SET DB INS command issued 0.8%
11. All others 8.4%
Ten most frequent EXPLAIN requests:
1. FIND (INSPEC DBS) 18.4%
2. GUIDE (INSPEC DBS) 16.3%
3. COMMANDS (INS/PSY/ABI/BIO DBS) 10.2%
4. INDEXES (INSPEC DBS) 8.2%
5. Unrecognized term 8.2%
6. MAIL 6.1%
7. INSPEC BACKFILES 6.1%
8. LOCATE (INS/PSY DBS) 4.1%
9. 1752 4.1%
10. DISPLAY TAGS 2.0%
11. All others 16.3%
Ten most frequent HELP situations:
1. Help requested from SET DB command 26.7%
2. First word of command is invalid 16.7%
3. FIND command with invalid index name 8.9%
4. DISPLAY command - last of >1 screen 7.8%
5. FIND command with zero results 4.4%
6. DISPLAY command-first of >1 screen 4.4%
7. DISPLAY command - middle of >1 screen 4.4%
8. MAIL command entered w/o email address 4.4%
9. 243 3.3%
10. NS of SHOW/EXP command-no next screen 3.3%
11. All others 15.6%
Ten most frequent SHOW requests:
1. HISTORY 47.4%
2. MAIL STATUS 21.1%
3. INSPEC NEWS 10.5%
4. IAC NEWS 5.3%
5. SETTINGS (INS/PSY DBS) 5.3%
6. MAIL SETTINGS 5.3%
7. DATABASES 5.3%
11. All others 0.0%
INSmm/dd ins MELVYL INSPEC DATABASES TELNET STATISTICS (weekly)