MELVYL INSPEC DATABASES TELNET STATISTICS
Time period: 03/01/02 through 03/31/02
1.0 SUMMARY STATISTICS
_______________________
1.1 Total sessions:
____________________
Zero results may indicate no access to the database
Location Library Remote Total
________ _______ ______ _____
Berkeley 12 868 880
Davis 243 14 257
Irvine 266 0 266
Los Angeles 0 414 414
Riverside 2 40 42
San Diego 115 457 572
San Francisco 14 0 14
Santa Barbara 4 131 135
Santa Cruz 16 87 103
Lawrence Berkeley 0 152 152
Lawrence Livermore 0 76 76
Los Alamos 0 0 0
Other - UC 2 74 76
Other-Network UC n/a 1,156 1,156
_______ ______ _____
674 3,469 4,143
Relative use of INSPEC databases:
Number of Number of Number of
Sessions FIND commands Records Displayed
_________ _____________ _________________
INS (current) 2,667 6,292 58,539
INS90 540 969 5,848
INS85 353 617 4,981
INS80 293 565 3,076
INS69 290 611 4,634
Per hour usage:
Time Sessions Finds Records Displayed
__________ __________ __________ _________________
12-2 a.m. 106 276 1,639
2-4 a.m. 76 156 1,304
4-6 a.m. 99 208 1,241
6-8 a.m. 191 459 2,980
8-10 a.m. 556 1,137 10,854
10-12 a.m. 768 1,615 14,312
12-2 p.m. 621 1,304 11,903
2-4 p.m. 769 1,764 13,049
4-6 p.m. 487 1,211 11,080
6-8 p.m. 225 432 4,030
8-10 p.m. 121 255 2,204
10-12 p.m. 124 237 2,482
__________ __________ __________ _________________
Total: 4,143 9,054 77,078
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 28 2,036 2,064
Davis 584 23 607
Irvine 679 0 679
Los Angeles 0 946 946
Riverside 3 96 99
San Diego 236 994 1,230
San Francisco 20 0 20
Santa Barbara 4 268 272
Santa Cruz 57 178 235
Lawrence Berkeley 0 384 384
Lawrence Livermore 0 225 225
Los Alamos 0 0 0
Other - UC 3 152 155
Other-Network UC n/a 2,138 2,138
_______ ______ _____
1,614 7,440 9,054
1.3 Records displayed
______________________
Zero results may indicate no access to the database
Number of Records Displayed by location:
Location Library Remote Total
________ _______ ______ _____
Berkeley 152 18,105 18,257
Davis 6,563 5 6,568
Irvine 9,941 0 9,941
Los Angeles 0 9,357 9,357
Riverside 24 507 531
San Diego 2,028 7,948 9,976
San Francisco 45 0 45
Santa Barbara 35 2,260 2,295
Santa Cruz 267 1,623 1,890
Lawrence Berkeley 0 4,350 4,350
Lawrence Livermore 0 1,143 1,143
Los Alamos 0 0 0
Other - UC 101 1,381 1,482
Other-Network UC n/a 11,243 11,243
_______ ______ _____
19,156 57,922 77,078
1.4 Response time
__________________
Search response time from receipt of command at
DLA until transmission of response:
Average in seconds 0.7
Standard deviation in seconds 2.0
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) 10:25
Average session length (minutes:seconds) 15:05
Longest session recorded (minutes:seconds) 595:47
Average number of searches completed per session 2.2
Retrievals per search - median 6.0
Retrievals per search - average 337.1
Retrievals per search - standard deviation 4237.8
Percent of searches completed with 0 results 26.5%
Percent of searches entered that are long 4.8%
Percent of long searches completed
(includes partial results) 72.7%
Commands entered, by type, excluding errors:
Total Percentage
__________ __________
FIND 8,335 30.4%
DISPLAY (excluding automatic displays) 10,218 37.3%
BROWSE 0 0.0%
SELECT 0 0.0%
HELP 188 0.7%
EXPLAIN 279 1.0%
SET/RESET 2,340 8.5%
SHOW 41 0.1%
ADD ON (AND, OR, AND NOT) 719 2.6%
LOGON or LOGOFF 3,850 14.1%
COMMENT 0 0.0%
SAVE 311 1.1%
USE 2 0.0%
OTHER 1,090 4.0%
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 3,911 43.0% 883 22.6% 15 69.5 259.3
TITLE WORD 1,807 19.9% 756 41.8% 5 96.7 877.3
EXACT TITLE 62 0.7% 37 59.7% 1 12.5 41.8
JOURNAL 278 3.1% 104 37.4% 23 3256.3 13346.1
EXACT JOURNAL 101 1.1% 28 27.7% 135 1003.9 1849.3
SUBJECT 281 3.1% 83 29.5% 25 429.4 2261.3
EXACT SUBJECT 24 0.3% 1 4.2% 30 171.4 334.9
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 1,882 20.7% 378 20.1% 21 813.8 4456.9
SUBFILE 0 0.0% 0 0.0% 0 0.0 0.0
FORM 42 0.5% 11 26.2% 14 88.6 146.2
DATE 213 2.3% 45 21.1% 7 208.1 1045.5
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. 74 0.8% 10 13.5% 73 10043.3 37378.1
CONFERENCE 25 0.3% 8 32.0% 955 5300.6 15632.6
LANGUAGE 0 0.0% 0 0.0% 0 0.0 0.0
CHEMICAL NAME 33 0.4% 15 45.5% 26 680.1 2137.7
ISSN 1 0.0% 1 100% 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 323 3.5% 57 17.6% 6 231.7 1948.7
EXACT PE 38 0.4% 5 13.2% 2 13.6 31.0
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 6 0.1% 0 0.0% 22 1040.5 2506.6
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 849 10.3% 246 29.0% 6 239.4 2839.6
Single 7,378 89.7% 1,919 26.0% 17 517.5 5326.7
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 0.0
EXACT THESAURUS 0 0.0% 0 0.0% 0.0 0.0 0.0
DISPLAY commands, by type, excluding automatic displays:
REVIEW 4.4%
SHORT 83.2%
LONG 3.2%
TAGS 0.3%
FIELDS 3.0%
BROWSE REVIEW 0.0%
BROWSE LONG 0.0%
PERIODICALS 4.7%
COMMENTS 0.0%
Other 1.2%
2.2 Error, EXPLAIN and HELP statistics
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Percent of commands that contained errors 8.9%
Ten most frequent errors:
1. NS command - no next screen 46.3%
2. First word of command is invalid 29.0%
3. FIND command with invalid index name 6.6%
4. DISPLAY command contains invalid word 3.3%
5. DISPLAY command-record numbers too large 1.5%
6. Search term missing from search command 1.5%
7. PS command - no previous screen 1.3%
8. DISPLAY command - no FIND results 1.2%
9. Invalid SET DB INS command issued 1.0%
10. Valid command at an inappropriate time 0.9%
11. All others 7.4%
Ten most frequent EXPLAIN requests:
1. INSPEC DATABASES 16.1%
2. FIND (INSPEC DBS) 12.9%
3. GUIDE (INSPEC DBS) 11.8%
4. INDEXES (INSPEC DBS) 5.7%
5. INSPEC BACKFILES 5.4%
6. LOCATE (INS/PSY DBS) 4.3%
7. COMMANDS (INS/PSY/ABI/BIO DBS) 4.3%
8. DATABASES 3.9%
9. Unrecognized term 3.6%
10. MAIL 2.9%
11. All others 29.0%
Ten most frequent HELP situations:
1. Help requested from SET DB command 23.3%
2. First word of command is invalid 12.8%
3. FIND command with invalid index name 7.3%
4. DISPLAY command-first of >1 screen 6.0%
5. NS command - no next screen 5.8%
6. FIND command with zero results 5.4%
7. DISPLAY command - middle of >1 screen 5.1%
8. FIND command retrieves >1 book 3.6%
9. DISPLAY command - last of >1 screen 3.6%
10. DISPLAY command-complete in one screen 3.4%
11. All others 23.6%
Ten most frequent SHOW requests:
1. HISTORY 71.8%
2. GLOSSARY 7.7%
3. SYSTEM NEWS 7.7%
4. INSPEC LOADING STATISTICS 5.1%
5. INSPEC NEWS 2.6%
6. SYSTEM3 NEWS 2.6%
11. All others 2.6%
INSmm/dd ins MELVYL INSPEC DATABASES TELNET STATISTICS (weekly)