MELVYL PSYCINFO DATABASE TELNET STATISTICS
Time period: 02/17/01 through 02/23/01
1.0 SUMMARY STATISTICS
_______________________
1.1 Total sessions:
____________________
Zero results may indicate no access to the database
Location Library Remote Total
________ _______ ______ _____
Berkeley 72 191 263
Davis 311 1 312
Irvine 79 0 79
Los Angeles 35 94 129
Riverside 24 23 47
San Diego 9 145 154
San Francisco 86 0 86
Santa Barbara 15 43 58
Santa Cruz 18 29 47
Lawrence Berkeley 0 0 0
Lawrence Livermore 0 0 0
Los Alamos 0 0 0
Other - UC 0 35 35
Other-Network UC n/a 144 144
_______ ______ _____
649 705 1,354
Per hour usage:
Time Sessions Finds Records Displayed
__________ __________ __________ _________________
12-2 a.m. 10 46 436
2-4 a.m. 6 22 455
4-6 a.m. 167 604 1,896
6-8 a.m. 24 135 2,022
8-10 a.m. 108 359 4,369
10-12 a.m. 170 565 5,187
12-2 p.m. 227 902 7,735
2-4 p.m. 258 933 9,967
4-6 p.m. 213 977 9,409
6-8 p.m. 84 606 4,392
8-10 p.m. 43 246 4,917
10-12 p.m. 44 138 1,385
__________ __________ __________ _________________
Total: 1,354 5,533 52,170
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 278 891 1,169
Davis 1,112 2 1,114
Irvine 340 0 340
Los Angeles 92 313 405
Riverside 90 59 149
San Diego 15 1,049 1,064
San Francisco 291 0 291
Santa Barbara 83 218 301
Santa Cruz 73 73 146
Lawrence Berkeley 0 0 0
Lawrence Livermore 0 0 0
Los Alamos 0 0 0
Other - UC 0 111 111
Other-Network UC n/a 443 443
_______ ______ _____
2,374 3,159 5,533
1.3 Records displayed
______________________
Zero results may indicate no access to the database
Number of Records Displayed by location:
Location Library Remote Total
________ _______ ______ _____
Berkeley 3,469 9,980 13,449
Davis 6,471 2 6,473
Irvine 4,985 0 4,985
Los Angeles 1,473 2,789 4,262
Riverside 1,102 895 1,997
San Diego 233 7,926 8,159
San Francisco 2,857 0 2,857
Santa Barbara 499 1,332 1,831
Santa Cruz 2,083 1,195 3,278
Lawrence Berkeley 0 0 0
Lawrence Livermore 0 0 0
Los Alamos 0 0 0
Other - UC 0 1,531 1,531
Other-Network UC n/a 3,348 3,348
_______ ______ _____
23,172 28,998 52,170
1.4 Response time
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Search response time from receipt of command at
DLA until transmission of response:
Average in seconds 0.6
Standard deviation in seconds 1.9
Display response time from receipt of command at
DLA until transmission of a complete screen:
Average in seconds 0.1
Standard deviation in seconds 0.2
2.0 PSYCINFO Database Detailed Statistics
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Median session length (minutes:seconds) 5:07
Average session length (minutes:seconds) 12:06
Longest session recorded (minutes:seconds) 267:22
Average number of searches completed per session 4.0
Retrievals per search - median 7.0
Retrievals per search - average 3335.4
Retrievals per search - standard deviation 17219
Percent of searches completed with 0 results 24.9%
Percent of searches entered that are long 2.7%
Percent of long searches completed
(includes partial results) 69.1%
Commands entered, by type, excluding errors:
Total Percentage
__________ __________
FIND 4,763 29.2%
DISPLAY (excluding automatic displays) 6,107 37.5%
BROWSE 27 0.2%
SELECT 6 0.0%
HELP 228 1.4%
EXPLAIN 213 1.3%
SET/RESET 535 3.3%
SHOW 59 0.4%
ADD ON (AND, OR, AND NOT) 768 4.7%
LOGON or LOGOFF 2,040 12.5%
COMMENT 0 0.0%
SAVE 1,166 7.2%
USE 2 0.0%
OTHER 409 2.5%
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 2,061 34.2% 407 19.7% 14 54.8 155.3
TITLE WORD 570 9.5% 164 28.8% 8 78.9 241.9
EXACT TITLE 69 1.1% 20 29.0% 1 21.5 59.6
JOURNAL 106 1.8% 37 34.9% 688 3470.7 7026.7
EXACT JOURNAL 78 1.3% 16 20.5% 248 1014.0 1827.9
SUBJECT 350 5.8% 184 52.6% 356 4632.9 14931.9
EXACT SUBJECT 453 7.5% 326 72.0% 2 571.4 3970.1
KEYWORD 1,106 18.4% 194 17.5% 49 1340.1 8665.6
FORM/PUB TYPE 17 0.3% 3 17.6% 13 709.4 2547.4
DATE 691 11.5% 344 49.8% 4 81.6 278.5
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. 5 0.1% 2 40.0% 50 413.7 672.8
CONFERENCE 0 0.0% 0 0.0% 0 0.0 0.0
LANGUAGE 6 0.1% 1 16.7% 118 203.6 273.9
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 148 2.5% 0 0.0% 1 1.0 0.0
PERIODICAL 85 1.4% 17 20.0% 4 16.5 68.8
EXACT PE 4 0.1% 0 0.0% 2 1.8 1.0
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 275 4.6% 160 58.2% 2 418.8 1853.2
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 1,043 22.1% 435 41.7% 5 91.2 468.9
Single 3,672 77.9% 839 22.8% 27 871.1 6374.1
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:
SUBJECT 19 70.4% 8 42.1% 2 3.5 3.3
EXACT SUBJECT 8 29.6% 5 62.5% 2 2.0 1.0
DISPLAY commands, by type, excluding automatic displays:
REVIEW 1.6%
SHORT 87.8%
LONG 1.3%
TAGS 2.2%
FIELDS 2.6%
BROWSE REVIEW 0.2%
BROWSE LONG 0.1%
PERIODICALS 2.0%
COMMENTS 0.0%
Other 2.2%
2.2 Error, EXPLAIN and HELP statistics
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Percent of commands that contained errors 10.7%
Ten most frequent errors:
1. NS command - no next screen 27.7%
2. First word of command is invalid 24.0%
3. DISPLAY command - no FIND results 17.8%
4. FIND command with invalid index name 7.2%
5. PS command - no previous screen 3.3%
6. DISPLAY command contains invalid word 3.2%
7. Search term missing from search command 2.4%
8. Valid command at an inappropriate time 1.9%
9. DISPLAY command-record numbers too large 1.4%
10. Add-on search, no index name after verb 1.0%
11. All others 10.1%
Ten most frequent EXPLAIN requests:
1. GUIDE 17.8%
2. LOCATE (INS/PSY DBS) 16.0%
3. COMMANDS (ABI/PSY DBS) 8.5%
4. FIND (PSY DB) 7.0%
5. INDEXES (PSY DB) 6.6%
6. MAIL 6.1%
7. ADDON SEARCH 5.6%
8. DISPLAY (INS/PSY DBS) 4.7%
9. Unrecognized term 3.3%
10. SEARCH (PSY DB) 2.3%
11. All others 22.1%
Ten most frequent HELP situations:
1. Help requested from SET DB command 18.6%
2. First word of command is invalid 15.0%
3. FIND command with zero results 8.6%
4. FIND command with invalid index name 7.7%
5. DISPLAY command - middle of >1 screen 6.6%
6. FIND command retrieves >1 book 5.9%
7. DISPLAY command-first of >1 screen 5.4%
8. DISPLAY command-complete in one screen 2.9%
9. PS command - no previous screen 2.7%
10. Add-on without index name after verb 2.5%
11. All others 24.0%
Ten most frequent SHOW requests:
1. SEARCH 48.3%
2. HISTORY 36.2%
3. PSYCINFO NEWS 8.6%
4. SETTINGS (INS/PSY DBS) 3.4%
5. MELVYL 1.7%
6. DISPLAY (MED/INS/PSY DBS) 1.7%
11. All others 0.0%
PSYmm/dd psy MELVYL PSYCINFO DATABASE TELNET STATISTICS (weekly)