MELVYL PSYCINFO DATABASE TELNET STATISTICS
Time period: 07/14/01 through 07/20/01
1.0 SUMMARY STATISTICS
_______________________
1.1 Total sessions:
____________________
Zero results may indicate no access to the database
Location Library Remote Total
________ _______ ______ _____
Berkeley 34 169 203
Davis 146 2 148
Irvine 42 0 42
Los Angeles 0 129 129
Riverside 12 34 46
San Diego 6 116 122
San Francisco 70 0 70
Santa Barbara 0 17 17
Santa Cruz 17 29 46
Lawrence Berkeley 0 0 0
Lawrence Livermore 0 0 0
Los Alamos 0 0 0
Other - UC 1 36 37
Other-Network UC n/a 103 103
_______ ______ _____
328 635 963
Per hour usage:
Time Sessions Finds Records Displayed
__________ __________ __________ _________________
12-2 a.m. 12 48 1,013
2-4 a.m. 21 240 839
4-6 a.m. 17 256 676
6-8 a.m. 16 45 278
8-10 a.m. 83 226 2,198
10-12 a.m. 202 573 5,338
12-2 p.m. 145 566 5,238
2-4 p.m. 209 743 6,667
4-6 p.m. 154 727 5,112
6-8 p.m. 42 232 3,326
8-10 p.m. 28 94 1,690
10-12 p.m. 34 126 1,352
__________ __________ __________ _________________
Total: 963 3,876 33,727
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 140 622 762
Davis 853 5 858
Irvine 125 0 125
Los Angeles 0 523 523
Riverside 51 114 165
San Diego 17 408 425
San Francisco 298 0 298
Santa Barbara 0 76 76
Santa Cruz 65 111 176
Lawrence Berkeley 0 0 0
Lawrence Livermore 0 0 0
Los Alamos 0 0 0
Other - UC 2 127 129
Other-Network UC n/a 339 339
_______ ______ _____
1,551 2,325 3,876
1.3 Records displayed
______________________
Zero results may indicate no access to the database
Number of Records Displayed by location:
Location Library Remote Total
________ _______ ______ _____
Berkeley 1,096 5,768 6,864
Davis 5,325 19 5,344
Irvine 687 0 687
Los Angeles 0 6,631 6,631
Riverside 490 1,010 1,500
San Diego 20 2,881 2,901
San Francisco 3,758 0 3,758
Santa Barbara 0 751 751
Santa Cruz 686 1,624 2,310
Lawrence Berkeley 0 0 0
Lawrence Livermore 0 0 0
Los Alamos 0 0 0
Other - UC 8 998 1,006
Other-Network UC n/a 1,975 1,975
_______ ______ _____
12,070 21,657 33,727
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 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) 7:41
Average session length (minutes:seconds) 12:30
Longest session recorded (minutes:seconds) 247:42
Average number of searches completed per session 4.0
Retrievals per search - median 6.0
Retrievals per search - average 489.9
Retrievals per search - standard deviation 4616.6
Percent of searches completed with 0 results 26.1%
Percent of searches entered that are long 3.2%
Percent of long searches completed
(includes partial results) 75.6%
Commands entered, by type, excluding errors:
Total Percentage
__________ __________
FIND 3,412 30.4%
DISPLAY (excluding automatic displays) 4,585 40.9%
BROWSE 18 0.2%
SELECT 1 0.0%
HELP 87 0.8%
EXPLAIN 105 0.9%
SET/RESET 360 3.2%
SHOW 24 0.2%
ADD ON (AND, OR, AND NOT) 464 4.1%
LOGON or LOGOFF 1,353 12.1%
COMMENT 0 0.0%
SAVE 524 4.7%
USE 0 0.0%
OTHER 297 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 1,526 33.8% 258 16.9% 15 69.7 215.0
TITLE WORD 447 9.9% 145 32.4% 8 143.7 631.8
EXACT TITLE 26 0.6% 7 26.9% 2 30.0 87.6
JOURNAL 111 2.5% 40 36.0% 126 914.0 2879.1
EXACT JOURNAL 36 0.8% 11 30.6% 112 210.2 311.8
SUBJECT 296 6.6% 142 48.0% 534 4010.5 9836.1
EXACT SUBJECT 462 10.2% 283 61.3% 2 600.0 3925.3
KEYWORD 614 13.6% 83 13.5% 41 1333.0 10071.3
FORM/PUB TYPE 15 0.3% 1 6.7% 242 532.2 634.6
DATE 639 14.2% 304 47.6% 3 17.4 70.2
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. 1 0.0% 0 0.0% 13,326 13326.0 0.0
CONFERENCE 0 0.0% 0 0.0% 0 0.0 0.0
LANGUAGE 6 0.1% 1 16.7% 91 372.6 432.5
ISSN 1 0.0% 1 100% 0 0.0 0.0
ISBN 0 0.0% 0 0.0% 0 0.0 0.0
ID NUMBER 19 0.4% 0 0.0% 1 1.0 0.0
PERIODICAL 32 0.7% 9 28.1% 2 44.4 120.1
EXACT PE 7 0.2% 1 14.3% 3 5.7 6.0
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 273 6.1% 120 44.0% 2 13.7 52.2
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 839 24.8% 350 41.7% 4 28.2 137.9
Single 2,543 75.2% 575 22.6% 31 830.8 6151.5
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 18 100% 3 16.7% 5 8.3 9.4
EXACT SUBJECT 0 0.0% 0 0.0% 0 0.0 0.0
DISPLAY commands, by type, excluding automatic displays:
REVIEW 3.4%
SHORT 86.9%
LONG 0.6%
TAGS 1.2%
FIELDS 4.5%
BROWSE REVIEW 0.3%
BROWSE LONG 0.1%
PERIODICALS 1.0%
COMMENTS 0.0%
Other 2.0%
2.2 Error, EXPLAIN and HELP statistics
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Percent of commands that contained errors 10.2%
Ten most frequent errors:
1. NS command - no next screen 32.0%
2. DISPLAY command - no FIND results 23.6%
3. First word of command is invalid 20.2%
4. FIND command with invalid index name 6.3%
5. PS command - no previous screen 3.6%
6. DISPLAY command contains invalid word 2.6%
7. DISPLAY command-record numbers too large 1.4%
8. Add-on search, no index name after verb 1.2%
9. Search term missing from search command 1.0%
10. NS of SHOW/EXP command-no next screen 0.9%
11. All others 7.0%
Ten most frequent EXPLAIN requests:
1. LOCATE (INS/PSY DBS) 22.9%
2. GUIDE 11.4%
3. FIND (PSY DB) 10.5%
4. INDEXES (PSY DB) 7.6%
5. COMMANDS (ABI/PSY DBS) 6.7%
6. DISPLAY (INS/PSY DBS) 6.7%
7. MAIL 4.8%
8. SUBJECT INDEX (PSY DB) 2.9%
9. SAVE 2.9%
10. SEARCH (PSY DB) 1.9%
11. All others 21.9%
Ten most frequent HELP situations:
1. First word of command is invalid 15.1%
2. Help requested from SET DB command 13.5%
3. NS command - no next screen 10.9%
4. DISPLAY command - middle of >1 screen 9.9%
5. FIND command with invalid index name 7.3%
6. FIND command with zero results 7.3%
7. DISPLAY command-first of >1 screen 6.3%
8. DISPLAY command - last of >1 screen 4.2%
9. FIND command retrieves >1 book 3.6%
10. 362 3.1%
11. All others 18.8%
Ten most frequent SHOW requests:
1. HISTORY 47.8%
2. SEARCH 21.7%
3. MAIL STATUS 17.4%
4. SETTINGS (INS/PSY DBS) 4.3%
5. PSYCINFO NEWS 4.3%
6. GLOSSARY 4.3%
11. All others 0.0%
PSYmm/dd psy MELVYL PSYCINFO DATABASE TELNET STATISTICS (weekly)