MELVYL PSYCINFO DATABASE TELNET STATISTICS
Time period: 06/09/01 through 06/15/01
1.0 SUMMARY STATISTICS
_______________________
1.1 Total sessions:
____________________
Zero results may indicate no access to the database
Location Library Remote Total
________ _______ ______ _____
Berkeley 16 127 143
Davis 140 0 140
Irvine 36 0 36
Los Angeles 10 128 138
Riverside 8 42 50
San Diego 11 92 103
San Francisco 52 0 52
Santa Barbara 3 20 23
Santa Cruz 7 10 17
Lawrence Berkeley 0 0 0
Lawrence Livermore 0 0 0
Los Alamos 0 0 0
Other - UC 3 46 49
Other-Network UC n/a 134 134
_______ ______ _____
286 599 885
Per hour usage:
Time Sessions Finds Records Displayed
__________ __________ __________ _________________
12-2 a.m. 15 83 500
2-4 a.m. 23 407 1,674
4-6 a.m. 20 278 695
6-8 a.m. 20 79 575
8-10 a.m. 106 354 2,457
10-12 a.m. 164 605 7,825
12-2 p.m. 148 581 5,995
2-4 p.m. 172 678 7,280
4-6 p.m. 107 386 3,056
6-8 p.m. 59 238 2,641
8-10 p.m. 32 157 1,970
10-12 p.m. 19 67 997
__________ __________ __________ _________________
Total: 885 3,913 35,665
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 137 560 697
Davis 906 2 908
Irvine 120 0 120
Los Angeles 22 501 523
Riverside 61 127 188
San Diego 46 346 392
San Francisco 147 0 147
Santa Barbara 7 54 61
Santa Cruz 22 30 52
Lawrence Berkeley 0 0 0
Lawrence Livermore 0 0 0
Los Alamos 0 0 0
Other - UC 15 239 254
Other-Network UC n/a 571 571
_______ ______ _____
1,483 2,430 3,913
1.3 Records displayed
______________________
Zero results may indicate no access to the database
Number of Records Displayed by location:
Location Library Remote Total
________ _______ ______ _____
Berkeley 1,001 5,041 6,042
Davis 5,978 7 5,985
Irvine 938 0 938
Los Angeles 327 5,916 6,243
Riverside 999 919 1,918
San Diego 156 3,300 3,456
San Francisco 2,838 0 2,838
Santa Barbara 33 355 388
Santa Cruz 847 323 1,170
Lawrence Berkeley 0 0 0
Lawrence Livermore 0 0 0
Los Alamos 0 0 0
Other - UC 48 2,180 2,228
Other-Network UC n/a 4,459 4,459
_______ ______ _____
13,165 22,500 35,665
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 0.9
Display response time from receipt of command at
DLA until transmission of a complete screen:
Average in seconds 0.1
Standard deviation in seconds 0.1
2.0 PSYCINFO Database Detailed Statistics
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Median session length (minutes:seconds) 8:14
Average session length (minutes:seconds) 12:41
Longest session recorded (minutes:seconds) 177:43
Average number of searches completed per session 4.4
Retrievals per search - median 5.0
Retrievals per search - average 454.3
Retrievals per search - standard deviation 5108.5
Percent of searches completed with 0 results 26.6%
Percent of searches entered that are long 3.6%
Percent of long searches completed
(includes partial results) 74.8%
Commands entered, by type, excluding errors:
Total Percentage
__________ __________
FIND 3,543 32.3%
DISPLAY (excluding automatic displays) 4,522 41.3%
BROWSE 3 0.0%
SELECT 0 0.0%
HELP 61 0.6%
EXPLAIN 62 0.6%
SET/RESET 271 2.5%
SHOW 15 0.1%
ADD ON (AND, OR, AND NOT) 370 3.4%
LOGON or LOGOFF 1,371 12.5%
COMMENT 0 0.0%
SAVE 443 4.0%
USE 1 0.0%
OTHER 300 2.7%
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 1,705 34.9% 318 18.6% 12 51.4 160.8
TITLE WORD 271 5.6% 74 27.3% 7 209.7 1660.1
EXACT TITLE 23 0.5% 6 26.1% 1 18.6 48.5
JOURNAL 60 1.2% 16 26.7% 456 1931.7 3398.5
EXACT JOURNAL 35 0.7% 12 34.3% 39 2716.9 6225.5
SUBJECT 116 2.4% 64 55.2% 240 4542.0 11116.6
EXACT SUBJECT 513 10.5% 372 72.5% 2 63.8 375.0
KEYWORD 1,036 21.2% 172 16.6% 34 1385.7 10220.1
FORM/PUB TYPE 14 0.3% 1 7.1% 126 609.2 1024.7
DATE 724 14.8% 401 55.4% 3 52.7 290.8
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. 2 0.0% 0 0.0% 838 838.0 1121.5
CONFERENCE 4 0.1% 3 75.0% 5 5.0 0.0
LANGUAGE 4 0.1% 0 0.0% 330 279.3 101.5
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 12 0.2% 0 0.0% 1 1.0 0.0
PERIODICAL 36 0.7% 6 16.7% 3 7.4 10.0
EXACT PE 22 0.5% 4 18.2% 3 7.6 10.6
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 303 6.2% 193 63.7% 2 105.5 492.6
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 1,019 29.0% 464 45.5% 4 69.9 356.9
Single 2,490 71.0% 496 19.9% 29 833.7 7083.8
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 3 100% 2 66.7% 1 1.0 0.0
EXACT SUBJECT 0 0.0% 0 0.0% 0 0.0 0.0
DISPLAY commands, by type, excluding automatic displays:
REVIEW 1.4%
SHORT 89.4%
LONG 1.6%
TAGS 1.6%
FIELDS 3.0%
BROWSE REVIEW 0.0%
BROWSE LONG 0.0%
PERIODICALS 1.5%
COMMENTS 0.0%
Other 1.5%
2.2 Error, EXPLAIN and HELP statistics
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Percent of commands that contained errors 10.1%
Ten most frequent errors:
1. DISPLAY command - no FIND results 30.5%
2. NS command - no next screen 25.1%
3. First word of command is invalid 18.0%
4. FIND command with invalid index name 5.7%
5. PS command - no previous screen 3.7%
6. DISPLAY command contains invalid word 2.3%
7. Valid command at an inappropriate time 2.2%
8. DISPLAY command-record numbers too large 1.5%
9. Add-on search, no index name after verb 1.4%
10. Search term missing from search command 1.2%
11. All others 8.4%
Ten most frequent EXPLAIN requests:
1. GUIDE 29.0%
2. LOCATE (INS/PSY DBS) 14.5%
3. FIND (PSY DB) 9.7%
4. DATABASES 8.1%
5. MAIL 6.5%
6. SUBJECT INDEX (PSY DB) 4.8%
7. Unrecognized term 4.8%
8. MAGS TEXT 3.2%
9. COMMANDS (ABI/PSY DBS) 1.6%
10. DISPLAY (INS/PSY DBS) 1.6%
11. All others 16.1%
Ten most frequent HELP situations:
1. Help requested from SET DB command 25.2%
2. First word of command is invalid 16.3%
3. FIND command with zero results 8.9%
4. FIND command with invalid index name 7.3%
5. DISPLAY command - middle of >1 screen 7.3%
6. PS command - no previous screen 4.1%
7. FIND command retrieves 1 book 4.1%
8. DISPLAY command-first of >1 screen 3.3%
9. MAIL command entered w/o email address 3.3%
10. FIND command retrieves >1 book 2.4%
11. All others 17.9%
Ten most frequent SHOW requests:
1. MAIL STATUS 40.0%
2. HISTORY 40.0%
3. SEARCH 13.3%
4. GLOSSARY 6.7%
11. All others 0.0%
PSYmm/dd psy MELVYL PSYCINFO DATABASE TELNET STATISTICS (weekly)