MELVYL PSYCINFO DATABASE TELNET STATISTICS
Time period: 09/29/01 through 10/05/01
1.0 SUMMARY STATISTICS
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1.1 Total sessions:
____________________
Zero results may indicate no access to the database
Location Library Remote Total
________ _______ ______ _____
Berkeley 28 135 163
Davis 81 0 81
Irvine 39 0 39
Los Angeles 1 87 88
Riverside 6 18 24
San Diego 5 105 110
San Francisco 39 0 39
Santa Barbara 5 24 29
Santa Cruz 4 27 31
Lawrence Berkeley 0 0 0
Lawrence Livermore 0 0 0
Los Alamos 0 0 0
Other - UC 0 19 19
Other-Network UC n/a 163 163
_______ ______ _____
208 578 786
Per hour usage:
Time Sessions Finds Records Displayed
__________ __________ __________ _________________
12-2 a.m. 15 59 568
2-4 a.m. 4 28 147
4-6 a.m. 5 26 246
6-8 a.m. 21 72 1,056
8-10 a.m. 74 232 2,168
10-12 a.m. 159 427 4,155
12-2 p.m. 117 400 4,915
2-4 p.m. 162 526 5,685
4-6 p.m. 125 449 5,598
6-8 p.m. 55 192 2,265
8-10 p.m. 24 91 1,307
10-12 p.m. 25 63 872
__________ __________ __________ _________________
Total: 786 2,565 28,982
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 61 432 493
Davis 267 1 268
Irvine 123 0 123
Los Angeles 1 408 409
Riverside 5 50 55
San Diego 16 311 327
San Francisco 117 0 117
Santa Barbara 15 131 146
Santa Cruz 16 81 97
Lawrence Berkeley 0 0 0
Lawrence Livermore 0 0 0
Los Alamos 0 0 0
Other - UC 0 57 57
Other-Network UC n/a 473 473
_______ ______ _____
621 1,944 2,565
1.3 Records displayed
______________________
Zero results may indicate no access to the database
Number of Records Displayed by location:
Location Library Remote Total
________ _______ ______ _____
Berkeley 632 5,999 6,631
Davis 3,430 27 3,457
Irvine 1,379 0 1,379
Los Angeles 6 5,449 5,455
Riverside 15 478 493
San Diego 11 2,849 2,860
San Francisco 1,984 0 1,984
Santa Barbara 114 1,053 1,167
Santa Cruz 264 1,075 1,339
Lawrence Berkeley 0 0 0
Lawrence Livermore 0 0 0
Los Alamos 0 0 0
Other - UC 0 591 591
Other-Network UC n/a 3,626 3,626
_______ ______ _____
7,835 21,147 28,982
1.4 Response time
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Search response time from receipt of command at
DLA until transmission of response:
Average in seconds 0.4
Standard deviation in seconds 0.8
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) 7:44
Average session length (minutes:seconds) 12:52
Longest session recorded (minutes:seconds) 212:26
Average number of searches completed per session 3.2
Retrievals per search - median 12.0
Retrievals per search - average 810.3
Retrievals per search - standard deviation 7055.1
Percent of searches completed with 0 results 18.9%
Percent of searches entered that are long 3.9%
Percent of long searches completed
(includes partial results) 63.4%
Commands entered, by type, excluding errors:
Total Percentage
__________ __________
FIND 2,257 27.0%
DISPLAY (excluding automatic displays) 3,626 43.4%
BROWSE 1 0.0%
SELECT 0 0.0%
HELP 60 0.7%
EXPLAIN 93 1.1%
SET/RESET 240 2.9%
SHOW 24 0.3%
ADD ON (AND, OR, AND NOT) 308 3.7%
LOGON or LOGOFF 1,119 13.4%
COMMENT 0 0.0%
SAVE 327 3.9%
USE 0 0.0%
OTHER 299 3.6%
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 1,226 49.7% 208 17.0% 17 68.8 193.8
TITLE WORD 306 12.4% 93 30.4% 10 127.2 466.2
EXACT TITLE 31 1.3% 13 41.9% 2 12.4 23.8
JOURNAL 59 2.4% 15 25.4% 182 3141.5 4753.1
EXACT JOURNAL 35 1.4% 14 40.0% 846 1614.3 3369.3
SUBJECT 55 2.2% 29 52.7% 2,537 22385.8 48120.8
EXACT SUBJECT 10 0.4% 2 20.0% 857 5319.3 8708.6
KEYWORD 578 23.4% 76 13.1% 58 2072.9 10027.3
FORM/PUB TYPE 4 0.2% 1 25.0% 7 36.3 54.3
DATE 83 3.4% 6 7.2% 5 17.9 45.9
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. 9 0.4% 0 0.0% 49 791.9 1239.0
CONFERENCE 0 0.0% 0 0.0% 0 0.0 0.0
LANGUAGE 2 0.1% 0 0.0% 808 807.5 1031.7
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 44 1.8% 3 6.8% 4 57.8 283.2
EXACT PE 22 0.9% 10 45.5% 5 99.4 327.7
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 4 0.2% 0 0.0% 31 35.3 20.6
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 239 10.8% 46 19.2% 5 22.2 114.2
Single 1,983 89.2% 377 19.0% 33 1208.0 8777.8
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 1 100% 0 0.0% 74 74.0 0.0
EXACT SUBJECT 0 0.0% 0 0.0% 0 0.0 0.0
DISPLAY commands, by type, excluding automatic displays:
REVIEW 3.1%
SHORT 89.4%
LONG 1.3%
TAGS 0.1%
FIELDS 2.3%
BROWSE REVIEW 0.0%
BROWSE LONG 0.0%
PERIODICALS 2.6%
COMMENTS 0.0%
Other 1.2%
2.2 Error, EXPLAIN and HELP statistics
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Percent of commands that contained errors 7.7%
Ten most frequent errors:
1. NS command - no next screen 35.1%
2. First word of command is invalid 29.2%
3. FIND command with invalid index name 8.0%
4. DISPLAY command contains invalid word 4.1%
5. PS command - no previous screen 3.6%
6. Valid command at an inappropriate time 2.3%
7. DISPLAY command - no FIND results 1.9%
8. Search term missing from search command 1.9%
9. Add-on search, no index name after verb 1.6%
10. DISPLAY command-record numbers too large 1.0%
11. All others 11.4%
Ten most frequent EXPLAIN requests:
1. GUIDE 12.9%
2. INDEXES (PSY DB) 11.8%
3. FIND (PSY DB) 10.8%
4. LOCATE (INS/PSY DBS) 9.7%
5. DATABASES 7.5%
6. COMMANDS (ABI/PSY DBS) 5.4%
7. Unrecognized term 5.4%
8. MAIL 4.3%
9. ADDON SEARCH 4.3%
10. DISPLAY (INS/PSY DBS) 3.2%
11. All others 24.7%
Ten most frequent HELP situations:
1. Help requested from SET DB command 20.3%
2. First word of command is invalid 13.7%
3. FIND command with invalid index name 8.5%
4. DISPLAY command-first of >1 screen 8.5%
5. FIND command with zero results 6.5%
6. DISPLAY command - middle of >1 screen 6.5%
7. PS command - no previous screen 4.6%
8. FIND command retrieves >1 book 3.9%
9. Help from invalid subsystem request 3.9%
10. Add-on search retrieves >1 record 3.3%
11. All others 20.3%
Ten most frequent SHOW requests:
1. MAIL STATUS 45.8%
2. HISTORY 33.3%
3. SEARCH 16.7%
4. PSYCINFO NEWS 4.2%
11. All others 0.0%
PSYmm/dd psy MELVYL PSYCINFO DATABASE TELNET STATISTICS (weekly)