MELVYL PSYCINFO DATABASE TELNET STATISTICS
Time period: 08/18/01 through 08/24/01
1.0 SUMMARY STATISTICS
_______________________
1.1 Total sessions:
____________________
Zero results may indicate no access to the database
Location Library Remote Total
________ _______ ______ _____
Berkeley 17 109 126
Davis 143 1 144
Irvine 39 0 39
Los Angeles 1 113 114
Riverside 3 15 18
San Diego 8 82 90
San Francisco 41 0 41
Santa Barbara 6 47 53
Santa Cruz 3 9 12
Lawrence Berkeley 0 0 0
Lawrence Livermore 0 0 0
Los Alamos 0 0 0
Other - UC 0 43 43
Other-Network UC n/a 129 129
_______ ______ _____
261 548 809
Per hour usage:
Time Sessions Finds Records Displayed
__________ __________ __________ _________________
12-2 a.m. 6 35 531
2-4 a.m. 20 251 1,014
4-6 a.m. 29 301 1,709
6-8 a.m. 21 62 1,390
8-10 a.m. 87 326 2,727
10-12 a.m. 146 637 4,867
12-2 p.m. 138 543 4,784
2-4 p.m. 173 607 6,456
4-6 p.m. 98 411 6,268
6-8 p.m. 47 149 1,145
8-10 p.m. 18 65 297
10-12 p.m. 26 151 882
__________ __________ __________ _________________
Total: 809 3,538 32,070
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 57 319 376
Davis 977 2 979
Irvine 138 0 138
Los Angeles 0 487 487
Riverside 7 66 73
San Diego 24 291 315
San Francisco 147 0 147
Santa Barbara 21 151 172
Santa Cruz 4 56 60
Lawrence Berkeley 0 0 0
Lawrence Livermore 0 0 0
Los Alamos 0 0 0
Other - UC 0 228 228
Other-Network UC n/a 563 563
_______ ______ _____
1,375 2,163 3,538
1.3 Records displayed
______________________
Zero results may indicate no access to the database
Number of Records Displayed by location:
Location Library Remote Total
________ _______ ______ _____
Berkeley 646 2,642 3,288
Davis 5,616 12 5,628
Irvine 1,974 0 1,974
Los Angeles 0 5,782 5,782
Riverside 166 1,326 1,492
San Diego 98 3,288 3,386
San Francisco 2,222 0 2,222
Santa Barbara 26 3,174 3,200
Santa Cruz 42 460 502
Lawrence Berkeley 0 0 0
Lawrence Livermore 0 0 0
Los Alamos 0 0 0
Other - UC 0 1,153 1,153
Other-Network UC n/a 3,443 3,443
_______ ______ _____
10,790 21,280 32,070
1.4 Response time
__________________
Search response time from receipt of command at
DLA until transmission of response:
Average in seconds 0.4
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) 6:17
Average session length (minutes:seconds) 13:06
Longest session recorded (minutes:seconds) 491:14
Average number of searches completed per session 4.3
Retrievals per search - median 6.0
Retrievals per search - average 497.7
Retrievals per search - standard deviation 4702.1
Percent of searches completed with 0 results 23.3%
Percent of searches entered that are long 2.8%
Percent of long searches completed
(includes partial results) 65.3%
Commands entered, by type, excluding errors:
Total Percentage
__________ __________
FIND 3,174 30.5%
DISPLAY (excluding automatic displays) 4,567 43.9%
BROWSE 42 0.4%
SELECT 7 0.1%
HELP 67 0.6%
EXPLAIN 69 0.7%
SET/RESET 275 2.6%
SHOW 28 0.3%
ADD ON (AND, OR, AND NOT) 364 3.5%
LOGON or LOGOFF 1,222 11.7%
COMMENT 0 0.0%
SAVE 376 3.6%
USE 2 0.0%
OTHER 266 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 1,553 36.2% 270 17.4% 15 66.2 310.0
TITLE WORD 264 6.2% 78 29.5% 8 56.4 116.7
EXACT TITLE 27 0.6% 14 51.9% 1 71.0 221.6
JOURNAL 39 0.9% 12 30.8% 571 1610.6 2395.4
EXACT JOURNAL 39 0.9% 11 28.2% 462 1708.7 3551.7
SUBJECT 152 3.5% 57 37.5% 810 4332.0 9151.2
EXACT SUBJECT 461 10.7% 229 49.7% 1 196.7 2446.5
KEYWORD 691 16.1% 114 16.5% 38 867.2 3846.6
FORM/PUB TYPE 25 0.6% 2 8.0% 18 1389.1 5612.7
DATE 683 15.9% 271 39.7% 3 17.2 72.0
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. 5 0.1% 4 80.0% 3,419 3419.0 0.0
CONFERENCE 0 0.0% 0 0.0% 0 0.0 0.0
LANGUAGE 4 0.1% 0 0.0% 55 55.0 32.3
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 17 0.4% 0 0.0% 1 1.0 0.0
PERIODICAL 35 0.8% 9 25.7% 11 38.3 72.7
EXACT PE 7 0.2% 0 0.0% 2 5.4 6.4
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 287 6.7% 74 25.8% 1 2806.1 15468.4
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 854 27.2% 315 36.9% 3 338.5 3612.0
Single 2,286 72.8% 445 19.5% 29 771.5 5647.0
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 40 95.2% 6 15.0% 1 5.0 10.8
EXACT SUBJECT 2 4.8% 0 0.0% 1 1.0 0.0
DISPLAY commands, by type, excluding automatic displays:
REVIEW 2.8%
SHORT 83.1%
LONG 1.1%
TAGS 2.8%
FIELDS 6.9%
BROWSE REVIEW 0.7%
BROWSE LONG 0.3%
PERIODICALS 1.1%
COMMENTS 0.0%
Other 1.3%
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 27.1%
2. DISPLAY command - no FIND results 23.6%
3. First word of command is invalid 19.2%
4. FIND command with invalid index name 7.1%
5. DISPLAY command contains invalid word 4.9%
6. PS command - no previous screen 2.9%
7. Valid command at an inappropriate time 2.7%
8. Search term missing from search command 1.7%
9. Add-on search, no index name after verb 1.4%
10. Add-on search with no previous result 0.7%
11. All others 8.8%
Ten most frequent EXPLAIN requests:
1. GUIDE 21.7%
2. LOCATE (INS/PSY DBS) 13.0%
3. FIND (PSY DB) 11.6%
4. INDEXES (PSY DB) 7.2%
5. COMMANDS (ABI/PSY DBS) 5.8%
6. DISPLAY (INS/PSY DBS) 5.8%
7. Unrecognized term 5.8%
8. MAIL 4.3%
9. ADDON SEARCH 4.3%
10. PUBLICATION TYPE (PSY DB) 2.9%
11. All others 17.4%
Ten most frequent HELP situations:
1. Help requested from SET DB command 20.6%
2. First word of command is invalid 11.8%
3. DISPLAY command - middle of >1 screen 10.3%
4. Add-on without index name after verb 7.4%
5. FIND command with invalid index name 6.6%
6. FIND command retrieves >1 book 5.1%
7. DISPLAY command-first of >1 screen 4.4%
8. DISPLAY command - last of >1 screen 4.4%
9. FIND command with zero results 2.9%
10. MAIL command entered w/o email address 2.9%
11. All others 23.5%
Ten most frequent SHOW requests:
1. HISTORY 42.9%
2. SEARCH 28.6%
3. SETTINGS (INS/PSY DBS) 7.1%
4. PUBLICATION TYPES (PSY DB) 7.1%
5. PSYCINFO NEWS 7.1%
6. MAIL STATUS 7.1%
11. All others 0.0%
PSYmm/dd psy MELVYL PSYCINFO DATABASE TELNET STATISTICS (weekly)