MELVYL PSYCINFO DATABASE TELNET STATISTICS
Time period: 10/06/01 through 10/12/01
1.0 SUMMARY STATISTICS
_______________________
1.1 Total sessions:
____________________
Zero results may indicate no access to the database
Location Library Remote Total
________ _______ ______ _____
Berkeley 9 120 129
Davis 103 0 103
Irvine 56 0 56
Los Angeles 0 89 89
Riverside 7 24 31
San Diego 10 101 111
San Francisco 42 0 42
Santa Barbara 1 24 25
Santa Cruz 5 29 34
Lawrence Berkeley 0 0 0
Lawrence Livermore 0 0 0
Los Alamos 0 0 0
Other - UC 1 26 27
Other-Network UC n/a 165 165
_______ ______ _____
234 578 812
Per hour usage:
Time Sessions Finds Records Displayed
__________ __________ __________ _________________
12-2 a.m. 22 55 318
2-4 a.m. 16 37 358
4-6 a.m. 12 52 342
6-8 a.m. 16 98 630
8-10 a.m. 109 340 2,191
10-12 a.m. 143 380 4,746
12-2 p.m. 138 477 3,573
2-4 p.m. 142 420 4,021
4-6 p.m. 100 354 4,520
6-8 p.m. 49 176 1,682
8-10 p.m. 37 102 1,120
10-12 p.m. 28 88 595
__________ __________ __________ _________________
Total: 812 2,579 24,096
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 41 407 448
Davis 368 1 369
Irvine 191 0 191
Los Angeles 0 284 284
Riverside 51 51 102
San Diego 51 349 400
San Francisco 110 0 110
Santa Barbara 1 64 65
Santa Cruz 3 69 72
Lawrence Berkeley 0 0 0
Lawrence Livermore 0 0 0
Los Alamos 0 0 0
Other - UC 1 97 98
Other-Network UC n/a 440 440
_______ ______ _____
817 1,762 2,579
1.3 Records displayed
______________________
Zero results may indicate no access to the database
Number of Records Displayed by location:
Location Library Remote Total
________ _______ ______ _____
Berkeley 473 4,823 5,296
Davis 2,990 7 2,997
Irvine 1,960 0 1,960
Los Angeles 0 3,620 3,620
Riverside 308 574 882
San Diego 48 3,232 3,280
San Francisco 1,195 0 1,195
Santa Barbara 1 495 496
Santa Cruz 25 915 940
Lawrence Berkeley 0 0 0
Lawrence Livermore 0 0 0
Los Alamos 0 0 0
Other - UC 3 457 460
Other-Network UC n/a 2,970 2,970
_______ ______ _____
7,003 17,093 24,096
1.4 Response time
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Search response time from receipt of command at
DLA until transmission of response:
Average in seconds 0.5
Standard deviation in seconds 1.0
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 PSYCINFO Database Detailed Statistics
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Median session length (minutes:seconds) 8:13
Average session length (minutes:seconds) 12:28
Longest session recorded (minutes:seconds) 144:15
Average number of searches completed per session 3.1
Retrievals per search - median 7.0
Retrievals per search - average 373.4
Retrievals per search - standard deviation 3393.7
Percent of searches completed with 0 results 20.5%
Percent of searches entered that are long 3.3%
Percent of long searches completed
(includes partial results) 69.4%
Commands entered, by type, excluding errors:
Total Percentage
__________ __________
FIND 2,324 28.0%
DISPLAY (excluding automatic displays) 3,378 40.7%
BROWSE 18 0.2%
SELECT 0 0.0%
HELP 67 0.8%
EXPLAIN 56 0.7%
SET/RESET 249 3.0%
SHOW 19 0.2%
ADD ON (AND, OR, AND NOT) 255 3.1%
LOGON or LOGOFF 1,138 13.7%
COMMENT 0 0.0%
SAVE 553 6.7%
USE 0 0.0%
OTHER 262 3.2%
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 1,145 42.7% 214 18.7% 12 59.8 197.2
TITLE WORD 297 11.1% 83 27.9% 8 102.9 518.8
EXACT TITLE 20 0.7% 5 25.0% 1 9.0 18.7
JOURNAL 72 2.7% 23 31.9% 45 1269.1 4559.6
EXACT JOURNAL 17 0.6% 7 41.2% 9 824.1 1692.1
SUBJECT 127 4.7% 58 45.7% 142 3410.5 12625.4
EXACT SUBJECT 3 0.1% 2 66.7% 872 872.0 0.0
KEYWORD 743 27.7% 137 18.4% 28 717.1 3989.3
FORM/PUB TYPE 6 0.2% 0 0.0% 111 868.2 1846.1
DATE 176 6.6% 29 16.5% 3 17.1 50.9
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. 3 0.1% 1 33.3% 18 18.0 0.0
CONFERENCE 0 0.0% 0 0.0% 0 0.0 0.0
LANGUAGE 10 0.4% 1 10.0% 62 61.0 45.7
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 46 1.7% 12 26.1% 4 15.0 22.9
EXACT PE 9 0.3% 3 33.3% 3 3.5 2.9
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 5 0.2% 3 60.0% 17,456 17455.5 24684.4
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 343 14.9% 85 24.8% 5 42.8 294.8
Single 1,955 85.1% 401 20.5% 24 540.7 3892.6
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 18 100% 4 22.2% 4 6.4 6.7
EXACT SUBJECT 0 0.0% 0 0.0% 0 0.0 0.0
DISPLAY commands, by type, excluding automatic displays:
REVIEW 2.9%
SHORT 89.0%
LONG 1.1%
TAGS 0.0%
FIELDS 2.1%
BROWSE REVIEW 0.4%
BROWSE LONG 0.3%
PERIODICALS 2.1%
COMMENTS 0.0%
Other 2.0%
2.2 Error, EXPLAIN and HELP statistics
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Percent of commands that contained errors 7.2%
Ten most frequent errors:
1. NS command - no next screen 36.2%
2. First word of command is invalid 27.6%
3. FIND command with invalid index name 9.0%
4. DISPLAY command contains invalid word 3.7%
5. PS command - no previous screen 3.1%
6. DISPLAY command-record numbers too large 2.5%
7. Valid command at an inappropriate time 2.3%
8. Search term missing from search command 2.0%
9. DISPLAY command - no FIND results 1.4%
10. BROWSE command with invalid index name 0.9%
11. All others 11.3%
Ten most frequent EXPLAIN requests:
1. GUIDE 26.8%
2. LOCATE (INS/PSY DBS) 14.3%
3. INDEXES (PSY DB) 10.7%
4. FIND (PSY DB) 7.1%
5. COMMANDS (ABI/PSY DBS) 5.4%
6. PUBLICATION TYPE (PSY DB) 5.4%
7. DATABASES 5.4%
8. DISPLAY (INS/PSY DBS) 3.6%
9. FORMS (PSY DB) 3.6%
10. ADDON SEARCH 3.6%
11. All others 14.3%
Ten most frequent HELP situations:
1. Help requested from SET DB command 31.7%
2. First word of command is invalid 16.3%
3. FIND command with invalid index name 8.9%
4. FIND command with zero results 4.1%
5. DISPLAY command - middle of >1 screen 4.1%
6. Multi-index search with zero results 4.1%
7. NS command - no next screen 3.3%
8. FIND command retrieves >1 book 3.3%
9. DISPLAY command-first of >1 screen 3.3%
10. SET DB command entered w/o modifier 2.4%
11. All others 18.7%
Ten most frequent SHOW requests:
1. HISTORY 57.9%
2. SEARCH 21.1%
3. MAIL SETTINGS 10.5%
4. PUBLICATION TYPES (PSY DB) 5.3%
5. DISPLAY (MED/INS/PSY DBS) 5.3%
11. All others 0.0%
PSYmm/dd psy MELVYL PSYCINFO DATABASE TELNET STATISTICS (weekly)