MELVYL PSYCINFO DATABASE TELNET STATISTICS
Time period: 01/05/02 through 01/11/02
1.0 SUMMARY STATISTICS
_______________________
1.1 Total sessions:
____________________
Zero results may indicate no access to the database
Location Library Remote Total
________ _______ ______ _____
Berkeley 6 117 123
Davis 73 0 73
Irvine 27 0 27
Los Angeles 2 82 84
Riverside 5 19 24
San Diego 9 58 67
San Francisco 31 0 31
Santa Barbara 0 17 17
Santa Cruz 0 17 17
Lawrence Berkeley 0 0 0
Lawrence Livermore 0 0 0
Los Alamos 0 0 0
Other - UC 1 18 19
Other-Network UC n/a 139 139
_______ ______ _____
154 467 621
Per hour usage:
Time Sessions Finds Records Displayed
__________ __________ __________ _________________
12-2 a.m. 2 11 108
2-4 a.m. 16 230 1,085
4-6 a.m. 6 19 120
6-8 a.m. 17 56 462
8-10 a.m. 84 270 1,531
10-12 a.m. 126 467 3,415
12-2 p.m. 100 426 4,047
2-4 p.m. 145 512 4,003
4-6 p.m. 65 267 3,638
6-8 p.m. 20 101 1,217
8-10 p.m. 25 84 665
10-12 p.m. 15 68 322
__________ __________ __________ _________________
Total: 621 2,511 20,613
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 7 517 524
Davis 387 0 387
Irvine 134 0 134
Los Angeles 3 247 250
Riverside 16 52 68
San Diego 58 205 263
San Francisco 221 0 221
Santa Barbara 0 103 103
Santa Cruz 0 43 43
Lawrence Berkeley 0 0 0
Lawrence Livermore 0 0 0
Los Alamos 0 0 0
Other - UC 7 135 142
Other-Network UC n/a 376 376
_______ ______ _____
833 1,678 2,511
1.3 Records displayed
______________________
Zero results may indicate no access to the database
Number of Records Displayed by location:
Location Library Remote Total
________ _______ ______ _____
Berkeley 39 4,804 4,843
Davis 2,393 0 2,393
Irvine 1,110 0 1,110
Los Angeles 25 2,781 2,806
Riverside 493 587 1,080
San Diego 80 1,294 1,374
San Francisco 1,355 0 1,355
Santa Barbara 0 1,375 1,375
Santa Cruz 0 434 434
Lawrence Berkeley 0 0 0
Lawrence Livermore 0 0 0
Los Alamos 0 0 0
Other - UC 25 728 753
Other-Network UC n/a 3,090 3,090
_______ ______ _____
5,520 15,093 20,613
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 1.8
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 PSYCINFO Database Detailed Statistics
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Median session length (minutes:seconds) 9:23
Average session length (minutes:seconds) 13:09
Longest session recorded (minutes:seconds) 179:35
Average number of searches completed per session 4.0
Retrievals per search - median 8.0
Retrievals per search - average 854.1
Retrievals per search - standard deviation 6627.8
Percent of searches completed with 0 results 22.8%
Percent of searches entered that are long 2.8%
Percent of long searches completed
(includes partial results) 77.5%
Commands entered, by type, excluding errors:
Total Percentage
__________ __________
FIND 2,135 28.0%
DISPLAY (excluding automatic displays) 3,129 41.1%
BROWSE 19 0.2%
SELECT 5 0.1%
HELP 50 0.7%
EXPLAIN 37 0.5%
SET/RESET 170 2.2%
SHOW 37 0.5%
ADD ON (AND, OR, AND NOT) 374 4.9%
LOGON or LOGOFF 952 12.5%
COMMENT 0 0.0%
SAVE 495 6.5%
USE 0 0.0%
OTHER 241 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 1,026 37.7% 162 15.8% 16 56.6 147.4
TITLE WORD 265 9.7% 76 28.7% 6 68.2 172.5
EXACT TITLE 22 0.8% 7 31.8% 2 20.3 53.3
JOURNAL 54 2.0% 14 25.9% 621 2894.9 5390.4
EXACT JOURNAL 23 0.8% 5 21.7% 373 1375.5 3459.1
SUBJECT 102 3.7% 36 35.3% 955 9836.4 23748.5
EXACT SUBJECT 217 8.0% 167 77.0% 7 439.6 2497.2
KEYWORD 456 16.7% 55 12.1% 63 2694.1 12026.7
FORM/PUB TYPE 13 0.5% 1 7.7% 30 109.2 172.3
DATE 382 14.0% 188 49.2% 8 37.6 183.8
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. 0 0.0% 0 0.0% 0 0.0 0.0
CONFERENCE 0 0.0% 0 0.0% 0 0.0 0.0
LANGUAGE 4 0.1% 0 0.0% 378 4358.8 8154.6
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 7 0.3% 0 0.0% 1 1.0 0.0
PERIODICAL 20 0.7% 2 10.0% 10 16.8 17.3
EXACT PE 4 0.1% 0 0.0% 2 36.8 69.5
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 128 4.7% 86 67.2% 8 920.4 5748.6
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 467 22.0% 198 42.4% 7 348.9 2809.1
Single 1,652 78.0% 311 18.8% 30 1364.1 8670.7
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:
SUBJECT 17 89.5% 3 17.6% 5 8.6 9.4
EXACT SUBJECT 2 10.5% 1 50.0% 2 2.0 0.0
DISPLAY commands, by type, excluding automatic displays:
REVIEW 1.9%
SHORT 90.0%
LONG 0.9%
TAGS 0.7%
FIELDS 3.2%
BROWSE REVIEW 0.4%
BROWSE LONG 0.1%
PERIODICALS 1.2%
COMMENTS 0.0%
Other 1.7%
2.2 Error, EXPLAIN and HELP statistics
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Percent of commands that contained errors 8.8%
Ten most frequent errors:
1. NS command - no next screen 27.9%
2. DISPLAY command - no FIND results 23.7%
3. First word of command is invalid 20.1%
4. FIND command with invalid index name 5.7%
5. DISPLAY command contains invalid word 3.8%
6. PS command - no previous screen 3.0%
7. 1281 2.7%
8. Search term missing from search command 1.6%
9. DISPLAY command-record numbers too large 1.4%
10. NS of SHOW/EXP command-no next screen 1.1%
11. All others 8.9%
Ten most frequent EXPLAIN requests:
1. GUIDE 18.9%
2. FIND (PSY DB) 16.2%
3. INDEXES (PSY DB) 13.5%
4. SEARCH (PSY DB) 5.4%
5. BROWSE (PSY DB) 5.4%
6. SUBJECT INDEX (PSY DB) 5.4%
7. PUBLICATION TYPE (PSY DB) 5.4%
8. LIMIT (PSY DB) 5.4%
9. Unrecognized term 5.4%
10. COMMANDS (ABI/PSY DBS) 2.7%
11. All others 16.2%
Ten most frequent HELP situations:
1. First word of command is invalid 21.8%
2. Help requested from SET DB command 16.1%
3. FIND command with invalid index name 11.5%
4. FIND command with zero results 10.3%
5. PS command - no previous screen 8.0%
6. DISPLAY command - middle of >1 screen 4.6%
7. F/BR command with invalid search term 3.4%
8. 3 HELP commands issued from same code 3.4%
9. DISPLAY command-first of >1 screen 3.4%
10. BROWSE search with >1 result 3.4%
11. All others 13.8%
Ten most frequent SHOW requests:
1. HISTORY 66.7%
2. SEARCH 18.5%
3. MAIL STATUS 11.1%
4. MAIL SETTINGS 3.7%
11. All others 0.0%
PSYmm/dd psy MELVYL PSYCINFO DATABASE TELNET STATISTICS (weekly)