MELVYL PSYCINFO DATABASE TELNET STATISTICS
Time period: 11/24/01 through 11/30/01
1.0 SUMMARY STATISTICS
_______________________
1.1 Total sessions:
____________________
Zero results may indicate no access to the database
Location Library Remote Total
________ _______ ______ _____
Berkeley 18 146 164
Davis 114 2 116
Irvine 39 0 39
Los Angeles 5 120 125
Riverside 3 37 40
San Diego 12 84 96
San Francisco 53 0 53
Santa Barbara 4 43 47
Santa Cruz 11 23 34
Lawrence Berkeley 0 0 0
Lawrence Livermore 0 0 0
Los Alamos 0 0 0
Other - UC 5 16 21
Other-Network UC n/a 158 158
_______ ______ _____
264 629 893
Per hour usage:
Time Sessions Finds Records Displayed
__________ __________ __________ _________________
12-2 a.m. 13 28 229
2-4 a.m. 19 274 1,163
4-6 a.m. 3 4 20
6-8 a.m. 19 58 865
8-10 a.m. 94 306 2,266
10-12 a.m. 168 483 3,653
12-2 p.m. 147 625 5,613
2-4 p.m. 159 613 5,555
4-6 p.m. 133 451 4,489
6-8 p.m. 73 371 2,949
8-10 p.m. 30 122 717
10-12 p.m. 35 95 1,433
__________ __________ __________ _________________
Total: 893 3,430 28,952
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 55 500 555
Davis 614 16 630
Irvine 123 0 123
Los Angeles 13 517 530
Riverside 10 97 107
San Diego 52 336 388
San Francisco 159 0 159
Santa Barbara 11 158 169
Santa Cruz 36 87 123
Lawrence Berkeley 0 0 0
Lawrence Livermore 0 0 0
Los Alamos 0 0 0
Other - UC 6 65 71
Other-Network UC n/a 575 575
_______ ______ _____
1,079 2,351 3,430
1.3 Records displayed
______________________
Zero results may indicate no access to the database
Number of Records Displayed by location:
Location Library Remote Total
________ _______ ______ _____
Berkeley 389 4,841 5,230
Davis 4,371 140 4,511
Irvine 1,297 0 1,297
Los Angeles 266 6,203 6,469
Riverside 101 710 811
San Diego 110 2,442 2,552
San Francisco 1,689 0 1,689
Santa Barbara 24 855 879
Santa Cruz 90 936 1,026
Lawrence Berkeley 0 0 0
Lawrence Livermore 0 0 0
Los Alamos 0 0 0
Other - UC 8 493 501
Other-Network UC n/a 3,987 3,987
_______ ______ _____
8,345 20,607 28,952
1.4 Response time
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Search response time from receipt of command at
DLA until transmission of response:
Average in seconds 0.6
Standard deviation in seconds 5.3
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) 8:05
Average session length (minutes:seconds) 12:55
Longest session recorded (minutes:seconds) 109:01
Average number of searches completed per session 3.8
Retrievals per search - median 6.0
Retrievals per search - average 444.2
Retrievals per search - standard deviation 5742.8
Percent of searches completed with 0 results 28.3%
Percent of searches entered that are long 2.5%
Percent of long searches completed
(includes partial results) 70.9%
Commands entered, by type, excluding errors:
Total Percentage
__________ __________
FIND 3,142 30.6%
DISPLAY (excluding automatic displays) 4,403 42.9%
BROWSE 16 0.2%
SELECT 3 0.0%
HELP 83 0.8%
EXPLAIN 120 1.2%
SET/RESET 307 3.0%
SHOW 36 0.4%
ADD ON (AND, OR, AND NOT) 287 2.8%
LOGON or LOGOFF 1,254 12.2%
COMMENT 0 0.0%
SAVE 349 3.4%
USE 0 0.0%
OTHER 279 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 1,352 34.5% 287 21.2% 15 52.9 137.1
TITLE WORD 350 8.9% 117 33.4% 7 86.0 483.8
EXACT TITLE 50 1.3% 20 40.0% 1 29.6 110.6
JOURNAL 147 3.8% 53 36.1% 55 874.6 1936.4
EXACT JOURNAL 55 1.4% 23 41.8% 263 1286.9 2213.4
SUBJECT 227 5.8% 126 55.5% 1,262 4152.2 9483.1
EXACT SUBJECT 258 6.6% 187 72.5% 3 420.7 1900.8
KEYWORD 839 21.4% 152 18.1% 26 1076.5 11796.9
FORM/PUB TYPE 9 0.2% 0 0.0% 28 137.4 291.3
DATE 412 10.5% 223 54.1% 4 19.4 46.1
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% 2 2.0 0.0
CONFERENCE 0 0.0% 0 0.0% 0 0.0 0.0
LANGUAGE 5 0.1% 0 0.0% 193 1679.8 3351.6
ISSN 2 0.1% 1 50.0% 463 463.0 0.0
ISBN 0 0.0% 0 0.0% 0 0.0 0.0
ID NUMBER 2 0.1% 0 0.0% 1 1.0 0.0
PERIODICAL 45 1.1% 10 22.2% 4 24.5 47.2
EXACT PE 10 0.3% 1 10.0% 3 13.4 20.4
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 152 3.9% 92 60.5% 3 170.4 994.1
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 633 20.3% 285 45.0% 4 50.6 429.0
Single 2,485 79.7% 622 25.0% 25 739.7 7578.5
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 16 100% 9 56.3% 7 18.1 25.7
EXACT SUBJECT 0 0.0% 0 0.0% 0 0.0 0.0
DISPLAY commands, by type, excluding automatic displays:
REVIEW 1.6%
SHORT 88.4%
LONG 1.0%
TAGS 0.6%
FIELDS 4.9%
BROWSE REVIEW 0.2%
BROWSE LONG 0.1%
PERIODICALS 1.4%
COMMENTS 0.0%
Other 1.8%
2.2 Error, EXPLAIN and HELP statistics
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Percent of commands that contained errors 8.7%
Ten most frequent errors:
1. NS command - no next screen 30.7%
2. DISPLAY command - no FIND results 19.4%
3. First word of command is invalid 19.3%
4. FIND command with invalid index name 8.2%
5. PS command - no previous screen 3.8%
6. DISPLAY command contains invalid word 2.9%
7. Search term missing from search command 2.1%
8. DISPLAY command-record numbers too large 1.8%
9. Valid command at an inappropriate time 1.2%
10. Max. # of ports to a Z39 db are in use 1.1%
11. All others 9.5%
Ten most frequent EXPLAIN requests:
1. GUIDE 21.7%
2. LOCATE (INS/PSY DBS) 16.7%
3. FIND (PSY DB) 8.3%
4. SUBJECT INDEX (PSY DB) 5.8%
5. SAVE 4.2%
6. COMMANDS (ABI/PSY DBS) 3.3%
7. DISPLAY (INS/PSY DBS) 3.3%
8. INDEXES (PSY DB) 3.3%
9. DATE (PSY DB) 3.3%
10. Unrecognized term 3.3%
11. All others 26.7%
Ten most frequent HELP situations:
1. Help requested from SET DB command 27.6%
2. FIND command with zero results 12.3%
3. First word of command is invalid 11.8%
4. FIND command with invalid index name 7.4%
5. DISPLAY command-first of >1 screen 6.9%
6. DISPLAY command - middle of >1 screen 5.4%
7. FIND command retrieves >1 book 3.4%
8. NS command - no next screen 3.0%
9. DISPLAY command-complete in one screen 3.0%
10. DISPLAY command - last of >1 screen 2.5%
11. All others 16.7%
Ten most frequent SHOW requests:
1. HISTORY 45.5%
2. SEARCH 39.4%
3. UPDATE 6.1%
4. PSYCINFO NEWS 3.0%
5. MAIL SETTINGS 3.0%
6. MAIL STATUS 3.0%
11. All others 0.0%
PSYmm/dd psy MELVYL PSYCINFO DATABASE TELNET STATISTICS (weekly)