MELVYL PSYCINFO DATABASE TELNET STATISTICS
Time period: 06/22/02 through 06/28/02
1.0 SUMMARY STATISTICS
_______________________
1.1 Total sessions:
____________________
Zero results may indicate no access to the database
Location Library Remote Total
________ _______ ______ _____
Berkeley 12 116 128
Davis 71 0 71
Irvine 26 0 26
Los Angeles 0 50 50
Riverside 0 24 24
San Diego 4 43 47
San Francisco 12 0 12
Santa Barbara 0 11 11
Santa Cruz 0 8 8
Lawrence Berkeley 0 0 0
Lawrence Livermore 0 0 0
Los Alamos 0 0 0
Other - UC 0 24 24
Other-Network UC n/a 102 102
_______ ______ _____
125 378 503
Per hour usage:
Time Sessions Finds Records Displayed
__________ __________ __________ _________________
12-2 a.m. 14 48 239
2-4 a.m. 30 326 2,499
4-6 a.m. 2 2 5
6-8 a.m. 15 93 697
8-10 a.m. 58 185 1,602
10-12 a.m. 85 320 2,211
12-2 p.m. 97 420 3,529
2-4 p.m. 85 333 1,595
4-6 p.m. 66 253 2,420
6-8 p.m. 20 97 1,165
8-10 p.m. 20 94 1,003
10-12 p.m. 11 48 1,610
__________ __________ __________ _________________
Total: 503 2,219 18,575
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 29 454 483
Davis 489 0 489
Irvine 79 0 79
Los Angeles 0 252 252
Riverside 0 61 61
San Diego 24 168 192
San Francisco 68 0 68
Santa Barbara 0 33 33
Santa Cruz 0 98 98
Lawrence Berkeley 0 0 0
Lawrence Livermore 0 0 0
Los Alamos 0 0 0
Other - UC 0 127 127
Other-Network UC n/a 337 337
_______ ______ _____
689 1,530 2,219
1.3 Records displayed
______________________
Zero results may indicate no access to the database
Number of Records Displayed by location:
Location Library Remote Total
________ _______ ______ _____
Berkeley 256 3,866 4,122
Davis 2,268 0 2,268
Irvine 470 0 470
Los Angeles 0 2,768 2,768
Riverside 0 370 370
San Diego 52 2,097 2,149
San Francisco 283 0 283
Santa Barbara 0 126 126
Santa Cruz 0 934 934
Lawrence Berkeley 0 0 0
Lawrence Livermore 0 0 0
Los Alamos 0 0 0
Other - UC 0 2,836 2,836
Other-Network UC n/a 2,249 2,249
_______ ______ _____
3,329 15,246 18,575
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) 7:10
Average session length (minutes:seconds) 11:49
Longest session recorded (minutes:seconds) 186:31
Average number of searches completed per session 4.4
Retrievals per search - median 5.0
Retrievals per search - average 415.2
Retrievals per search - standard deviation 5724.2
Percent of searches completed with 0 results 25.6%
Percent of searches entered that are long 4.9%
Percent of long searches completed
(includes partial results) 75.2%
Commands entered, by type, excluding errors:
Total Percentage
__________ __________
FIND 2,029 33.1%
DISPLAY (excluding automatic displays) 2,572 41.9%
BROWSE 2 0.0%
SELECT 0 0.0%
HELP 38 0.6%
EXPLAIN 53 0.9%
SET/RESET 154 2.5%
SHOW 7 0.1%
ADD ON (AND, OR, AND NOT) 190 3.1%
LOGON or LOGOFF 785 12.8%
COMMENT 0 0.0%
SAVE 142 2.3%
USE 0 0.0%
OTHER 167 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 1,085 40.1% 205 18.9% 11 52.7 182.7
TITLE WORD 232 8.6% 61 26.3% 13 121.8 296.5
EXACT TITLE 18 0.7% 10 55.6% 1 259.6 730.7
JOURNAL 30 1.1% 7 23.3% 160 1171.8 2451.1
EXACT JOURNAL 30 1.1% 9 30.0% 776 2088.2 3461.5
SUBJECT 78 2.9% 36 46.2% 39 4564.1 19262.9
EXACT SUBJECT 245 9.0% 168 68.6% 2 6.7 12.7
KEYWORD 368 13.6% 63 17.1% 23 1845.5 13379.3
FORM/PUB TYPE 22 0.8% 3 13.6% 6 150.3 386.1
DATE 395 14.6% 187 47.3% 3 21.4 87.5
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. 15 0.6% 6 40.0% 306 993.6 2031.5
CONFERENCE 0 0.0% 0 0.0% 0 0.0 0.0
LANGUAGE 14 0.5% 2 14.3% 9 164.9 457.9
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 21 0.8% 0 0.0% 4 14.2 22.0
EXACT PE 4 0.1% 0 0.0% 4 3.3 1.5
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 145 5.4% 71 49.0% 2 9.0 17.4
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 516 25.7% 215 41.7% 4 39.6 166.4
Single 1,490 74.3% 312 20.9% 21 750.9 7791.6
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 2 100% 1 50.0% 2 2.0 0.0
EXACT SUBJECT 0 0.0% 0 0.0% 0 0.0 0.0
DISPLAY commands, by type, excluding automatic displays:
REVIEW 3.8%
SHORT 84.2%
LONG 1.5%
TAGS 1.3%
FIELDS 6.1%
BROWSE REVIEW 0.0%
BROWSE LONG 0.0%
PERIODICALS 1.4%
COMMENTS 0.0%
Other 1.6%
2.2 Error, EXPLAIN and HELP statistics
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Percent of commands that contained errors 10.1%
Ten most frequent errors:
1. NS command - no next screen 32.9%
2. DISPLAY command - no FIND results 26.1%
3. First word of command is invalid 16.2%
4. FIND command with invalid index name 6.2%
5. DISPLAY command contains invalid word 3.8%
6. PS command - no previous screen 2.8%
7. DISPLAY command-record numbers too large 1.6%
8. Valid command at an inappropriate time 1.0%
9. Search term missing from search command 1.0%
10. BROWSE command with invalid index name 1.0%
11. All others 7.4%
Ten most frequent EXPLAIN requests:
1. LOCATE (INS/PSY DBS) 56.6%
2. GUIDE 13.2%
3. INDEXES (PSY DB) 11.3%
4. COMMANDS (ABI/PSY DBS) 5.7%
5. FIND (PSY DB) 5.7%
6. MAGS TEXT 1.9%
7. MAIL 1.9%
8. Unrecognized term 1.9%
9. SAVE 1.9%
11. All others 0.0%
Ten most frequent HELP situations:
1. Help requested from SET DB command 14.3%
2. FIND command with zero results 12.1%
3. First word of command is invalid 11.0%
4. DISPLAY command-first of >1 screen 11.0%
5. DISPLAY command - middle of >1 screen 9.9%
6. DISPLAY command - last of >1 screen 8.8%
7. FIND command with invalid index name 5.5%
8. DISPLAY command-complete in one screen 5.5%
9. FIND command retrieves 1 book 4.4%
10. F/BR command with invalid search term 2.2%
11. All others 15.4%
Ten most frequent SHOW requests:
1. SEARCH 42.9%
2. HISTORY 42.9%
3. PSYCINFO NEWS 14.3%
11. All others 0.0%
PSYmm/dd psy MELVYL PSYCINFO DATABASE TELNET STATISTICS (weekly)