MELVYL INSPEC DATABASES TELNET STATISTICS
Time period: 03/03/01 through 03/09/01
1.0 SUMMARY STATISTICS
_______________________
1.1 Total sessions:
____________________
Zero results may indicate no access to the database
Location Library Remote Total
________ _______ ______ _____
Berkeley 9 370 379
Davis 47 3 50
Irvine 83 0 83
Los Angeles 6 188 194
Riverside 6 8 14
San Diego 62 202 264
San Francisco 21 0 21
Santa Barbara 18 69 87
Santa Cruz 6 34 40
Lawrence Berkeley 0 66 66
Lawrence Livermore 0 70 70
Los Alamos 0 0 0
Other - UC 0 47 47
Other-Network UC n/a 392 392
_______ ______ _____
258 1,449 1,707
Relative use of INSPEC databases:
Number of Number of Number of
Sessions FIND commands Records Displayed
_________ _____________ _________________
INS (current) 1,102 2,615 20,922
INS90 211 385 2,532
INS85 147 285 1,321
INS80 132 250 1,203
INS69 115 269 1,620
Per hour usage:
Time Sessions Finds Records Displayed
__________ __________ __________ _________________
12-2 a.m. 57 109 858
2-4 a.m. 14 36 405
4-6 a.m. 42 116 878
6-8 a.m. 49 137 815
8-10 a.m. 141 304 1,373
10-12 a.m. 271 733 5,372
12-2 p.m. 235 566 3,989
2-4 p.m. 322 638 3,334
4-6 p.m. 247 510 4,041
6-8 p.m. 172 378 4,846
8-10 p.m. 90 167 1,063
10-12 p.m. 67 110 624
__________ __________ __________ _________________
Total: 1,707 3,804 27,598
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 13 869 882
Davis 110 6 116
Irvine 213 0 213
Los Angeles 8 437 445
Riverside 17 12 29
San Diego 171 496 667
San Francisco 54 0 54
Santa Barbara 45 148 193
Santa Cruz 13 59 72
Lawrence Berkeley 0 182 182
Lawrence Livermore 0 145 145
Los Alamos 0 0 0
Other - UC 0 119 119
Other-Network UC n/a 687 687
_______ ______ _____
644 3,160 3,804
1.3 Records displayed
______________________
Zero results may indicate no access to the database
Number of Records Displayed by location:
Location Library Remote Total
________ _______ ______ _____
Berkeley 59 5,916 5,975
Davis 551 11 562
Irvine 3,192 0 3,192
Los Angeles 56 2,335 2,391
Riverside 59 73 132
San Diego 596 3,596 4,192
San Francisco 223 0 223
Santa Barbara 85 1,693 1,778
Santa Cruz 193 431 624
Lawrence Berkeley 0 3,199 3,199
Lawrence Livermore 0 1,047 1,047
Los Alamos 0 0 0
Other - UC 0 653 653
Other-Network UC n/a 3,630 3,630
_______ ______ _____
5,014 22,584 27,598
1.4 Response time
__________________
Search response time from receipt of command at
DLA until transmission of response:
Average in seconds 1.1
Standard deviation in seconds 5.8
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) 6:52
Average session length (minutes:seconds) 12:57
Longest session recorded (minutes:seconds) 431:49
Average number of searches completed per session 2.2
Retrievals per search - median 6.0
Retrievals per search - average 904.9
Retrievals per search - standard deviation 16848
Percent of searches completed with 0 results 26.8%
Percent of searches entered that are long 5.6%
Percent of long searches completed
(includes partial results) 77.1%
Commands entered, by type, excluding errors:
Total Percentage
__________ __________
FIND 3,435 31.4%
DISPLAY (excluding automatic displays) 3,779 34.6%
BROWSE 8 0.1%
SELECT 0 0.0%
HELP 68 0.6%
EXPLAIN 141 1.3%
SET/RESET 986 9.0%
SHOW 51 0.5%
ADD ON (AND, OR, AND NOT) 369 3.4%
LOGON or LOGOFF 1,531 14.0%
COMMENT 0 0.0%
SAVE 96 0.9%
USE 6 0.1%
OTHER 461 4.2%
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 1,649 42.8% 361 21.9% 15 98.8 353.6
TITLE WORD 787 20.4% 375 47.6% 6 126.6 661.1
EXACT TITLE 42 1.1% 26 61.9% 2 17.4 50.3
JOURNAL 133 3.5% 62 46.6% 9 1528.3 9455.5
EXACT JOURNAL 32 0.8% 18 56.3% 286 2323.4 4518.5
SUBJECT 117 3.0% 34 29.1% 28 968.9 2910.3
EXACT SUBJECT 8 0.2% 0 0.0% 104 2398.1 5413.9
THESAURUS 5 0.1% 2 40.0% 10 3748.3 6475.0
EXACT THESAURUS 0 0.0% 0 0.0% 0 0.0 0.0
KEYWORD 758 19.7% 106 14.0% 30 2827.1 30355.8
SUBFILE 1 0.0% 0 0.0% 8 8.0 0.0
FORM 29 0.8% 3 10.3% 22 192.6 364.9
DATE 45 1.2% 14 31.1% 15 115.5 307.7
ADDED 11 0.3% 6 54.5% 15 38.0 36.0
ARTICLE 0 0.0% 0 0.0% 0 0.0 0.0
AUTHOR AFFIL. 34 0.9% 6 17.6% 12 21.6 24.9
CONFERENCE 10 0.3% 3 30.0% 116 165.0 215.9
LANGUAGE 3 0.1% 0 0.0% 245 909.7 1151.2
CHEMICAL NAME 39 1.0% 1 2.6% 18 487.1 1517.6
ISSN 1 0.0% 0 0.0% 3,070 3070.0 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 120 3.1% 19 15.8% 6 104.5 589.9
EXACT PE 19 0.5% 2 10.5% 3 4.6 4.6
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 11 0.3% 3 27.3% 356 841.8 1014.4
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 435 12.8% 132 30.3% 6 140.3 865.5
Single 2,954 87.2% 776 26.3% 19 1028.0 16749.7
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 8 100% 3 37.5% 1 7.8 9.3
EXACT THESAURUS 0 0.0% 0 0.0% 0 0.0 0.0
DISPLAY commands, by type, excluding automatic displays:
REVIEW 4.3%
SHORT 81.8%
LONG 3.3%
TAGS 0.5%
FIELDS 3.8%
BROWSE REVIEW 0.1%
BROWSE LONG 0.0%
PERIODICALS 5.2%
COMMENTS 0.0%
Other 0.9%
2.2 Error, EXPLAIN and HELP statistics
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Percent of commands that contained errors 8.6%
Ten most frequent errors:
1. NS command - no next screen 42.9%
2. First word of command is invalid 30.8%
3. FIND command with invalid index name 5.6%
4. DISPLAY command contains invalid word 3.1%
5. Search term missing from search command 2.2%
6. NS of SHOW/EXP command-no next screen 1.5%
7. Invalid SET DB INS command issued 1.5%
8. DISPLAY command - no FIND results 1.4%
9. PS command - no previous screen 1.3%
10. Command contains escape or arrow key 1.0%
11. All others 8.9%
Ten most frequent EXPLAIN requests:
1. FIND (INSPEC DBS) 12.1%
2. GUIDE (INSPEC DBS) 10.6%
3. INSPEC DATABASES 9.9%
4. INDEXES (INSPEC DBS) 9.2%
5. INSPEC BACKFILES 7.1%
6. DATABASES 6.4%
7. COMMANDS (INS/PSY/ABI/BIO DBS) 5.0%
8. LOCATE (INS/PSY DBS) 4.3%
9. Unrecognized term 4.3%
10. MAIL 2.8%
11. All others 28.4%
Ten most frequent HELP situations:
1. Help requested from SET DB command 30.6%
2. First word of command is invalid 10.0%
3. FIND command retrieves >1 book 8.6%
4. FIND command with zero results 6.2%
5. DISPLAY command - middle of >1 screen 6.2%
6. FIND command with invalid index name 5.7%
7. DISPLAY command-complete in one screen 5.7%
8. NS command - no next screen 4.3%
9. DISPLAY command - last of >1 screen 4.3%
10. DISPLAY command-first of >1 screen 2.9%
11. All others 15.3%
Ten most frequent SHOW requests:
1. HISTORY 70.6%
2. INSPEC NEWS 7.8%
3. INSPEC LOADING STATISTICS 5.9%
4. MAIL STATUS 5.9%
5. SEARCH 3.9%
6. SETTINGS (INS/PSY DBS) 2.0%
7. LIBRARY SETTINGS 2.0%
8. MAIL SETTINGS 2.0%
11. All others 0.0%
INSmm/dd ins MELVYL INSPEC DATABASES TELNET STATISTICS (weekly)