MELVYL PSYCINFO DATABASE TELNET STATISTICS
Time period: 05/19/01 through 05/25/01
1.0 SUMMARY STATISTICS
_______________________
1.1 Total sessions:
____________________
Zero results may indicate no access to the database
Location Library Remote Total
________ _______ ______ _____
Berkeley 39 129 168
Davis 133 0 133
Irvine 126 0 126
Los Angeles 1 145 146
Riverside 17 24 41
San Diego 8 108 116
San Francisco 64 0 64
Santa Barbara 8 30 38
Santa Cruz 18 30 48
Lawrence Berkeley 0 0 0
Lawrence Livermore 0 0 0
Los Alamos 0 0 0
Other - UC 0 25 25
Other-Network UC n/a 133 133
_______ ______ _____
414 624 1,038
Per hour usage:
Time Sessions Finds Records Displayed
__________ __________ __________ _________________
12-2 a.m. 9 52 1,970
2-4 a.m. 16 221 629
4-6 a.m. 20 260 656
6-8 a.m. 24 76 453
8-10 a.m. 92 295 2,949
10-12 a.m. 154 574 4,771
12-2 p.m. 169 583 5,859
2-4 p.m. 226 860 8,626
4-6 p.m. 147 545 5,452
6-8 p.m. 73 253 3,155
8-10 p.m. 62 214 3,709
10-12 p.m. 46 199 2,283
__________ __________ __________ _________________
Total: 1,038 4,132 40,512
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 124 387 511
Davis 819 1 820
Irvine 603 0 603
Los Angeles 1 603 604
Riverside 39 109 148
San Diego 26 326 352
San Francisco 209 0 209
Santa Barbara 32 119 151
Santa Cruz 46 108 154
Lawrence Berkeley 0 0 0
Lawrence Livermore 0 0 0
Los Alamos 0 0 0
Other - UC 0 67 67
Other-Network UC n/a 513 513
_______ ______ _____
1,899 2,233 4,132
1.3 Records displayed
______________________
Zero results may indicate no access to the database
Number of Records Displayed by location:
Location Library Remote Total
________ _______ ______ _____
Berkeley 3,077 3,485 6,562
Davis 3,970 1 3,971
Irvine 4,477 0 4,477
Los Angeles 38 5,691 5,729
Riverside 761 1,179 1,940
San Diego 120 3,226 3,346
San Francisco 2,261 0 2,261
Santa Barbara 69 1,092 1,161
Santa Cruz 621 1,712 2,333
Lawrence Berkeley 0 0 0
Lawrence Livermore 0 0 0
Los Alamos 0 0 0
Other - UC 0 477 477
Other-Network UC n/a 8,255 8,255
_______ ______ _____
15,394 25,118 40,512
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 1.2
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 PSYCINFO Database Detailed Statistics
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Median session length (minutes:seconds) 8:17
Average session length (minutes:seconds) 13:24
Longest session recorded (minutes:seconds) 158:30
Average number of searches completed per session 3.9
Retrievals per search - median 7.0
Retrievals per search - average 739.0
Retrievals per search - standard deviation 5728.8
Percent of searches completed with 0 results 25.1%
Percent of searches entered that are long 2.3%
Percent of long searches completed
(includes partial results) 68.8%
Commands entered, by type, excluding errors:
Total Percentage
__________ __________
FIND 3,635 30.3%
DISPLAY (excluding automatic displays) 4,936 41.1%
BROWSE 9 0.1%
SELECT 3 0.0%
HELP 103 0.9%
EXPLAIN 100 0.8%
SET/RESET 323 2.7%
SHOW 25 0.2%
ADD ON (AND, OR, AND NOT) 497 4.1%
LOGON or LOGOFF 1,545 12.9%
COMMENT 0 0.0%
SAVE 530 4.4%
USE 3 0.0%
OTHER 313 2.6%
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 1,487 31.5% 269 18.1% 15 77.1 484.1
TITLE WORD 333 7.0% 108 32.4% 12 146.3 719.7
EXACT TITLE 32 0.7% 10 31.3% 4 22.0 72.3
JOURNAL 38 0.8% 17 44.7% 86 4553.2 18226.2
EXACT JOURNAL 82 1.7% 15 18.3% 687 2075.2 3647.0
SUBJECT 282 6.0% 140 49.6% 1,360 6071.4 12541.2
EXACT SUBJECT 466 9.9% 329 70.6% 2 59.5 417.5
KEYWORD 990 20.9% 137 13.8% 55 1691.3 9157.3
FORM/PUB TYPE 5 0.1% 0 0.0% 112 85.0 66.0
DATE 648 13.7% 354 54.6% 4 12.5 26.3
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. 4 0.1% 0 0.0% 16 44.3 65.7
CONFERENCE 0 0.0% 0 0.0% 0 0.0 0.0
LANGUAGE 4 0.1% 0 0.0% 104 87.5 38.5
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 14 0.3% 0 0.0% 1 1.0 0.0
PERIODICAL 53 1.1% 9 17.0% 8 75.3 235.5
EXACT PE 9 0.2% 0 0.0% 1 1.8 1.6
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 278 5.9% 152 54.7% 2 18.2 69.8
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 826 22.9% 411 49.8% 5 16.5 41.6
Single 2,778 77.1% 553 19.9% 34 1200.1 6929.0
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:
SUBJECT 9 100% 2 22.2% 1 1.9 2.3
EXACT SUBJECT 0 0.0% 0 0.0% 0 0.0 0.0
DISPLAY commands, by type, excluding automatic displays:
REVIEW 1.4%
SHORT 88.4%
LONG 0.6%
TAGS 1.5%
FIELDS 4.5%
BROWSE REVIEW 0.1%
BROWSE LONG 0.0%
PERIODICALS 2.0%
COMMENTS 0.0%
Other 1.4%
2.2 Error, EXPLAIN and HELP statistics
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Percent of commands that contained errors 10.6%
Ten most frequent errors:
1. NS command - no next screen 31.0%
2. DISPLAY command - no FIND results 23.9%
3. First word of command is invalid 20.4%
4. FIND command with invalid index name 5.2%
5. PS command - no previous screen 3.6%
6. DISPLAY command contains invalid word 2.2%
7. DISPLAY command-record numbers too large 2.1%
8. Valid command at an inappropriate time 1.1%
9. Add-on search, no index name after verb 1.1%
10. Command contains escape or arrow key 0.9%
11. All others 8.5%
Ten most frequent EXPLAIN requests:
1. GUIDE 26.0%
2. LOCATE (INS/PSY DBS) 23.0%
3. MAIL 8.0%
4. DISPLAY (INS/PSY DBS) 8.0%
5. FIND (PSY DB) 6.0%
6. COMMANDS (ABI/PSY DBS) 4.0%
7. Unrecognized term 4.0%
8. PRINT 3.0%
9. FIND LOCATION 2.0%
10. INDEXES (PSY DB) 2.0%
11. All others 14.0%
Ten most frequent HELP situations:
1. Help requested from SET DB command 21.2%
2. First word of command is invalid 12.3%
3. FIND command with invalid index name 7.4%
4. DISPLAY command - middle of >1 screen 7.4%
5. FIND command with zero results 6.9%
6. DISPLAY command-complete in one screen 6.4%
7. DISPLAY command - last of >1 screen 5.4%
8. FIND command retrieves >1 book 4.4%
9. DISPLAY command-first of >1 screen 4.4%
10. NS command - no next screen 3.9%
11. All others 20.2%
Ten most frequent SHOW requests:
1. HISTORY 60.0%
2. SEARCH 20.0%
3. SETTINGS (INS/PSY DBS) 4.0%
4. PSYCINFO NEWS 4.0%
5. SYSTEM NEWS 4.0%
6. MAIL SETTINGS 4.0%
7. DISPLAY (MED/INS/PSY DBS) 4.0%
11. All others 0.0%
PSYmm/dd psy MELVYL PSYCINFO DATABASE TELNET STATISTICS (weekly)