MELVYL PSYCINFO DATABASE TELNET STATISTICS
Time period: 12/01/01 through 12/07/01
1.0 SUMMARY STATISTICS
_______________________
1.1 Total sessions:
____________________
Zero results may indicate no access to the database
Location Library Remote Total
________ _______ ______ _____
Berkeley 75 148 223
Davis 101 2 103
Irvine 29 0 29
Los Angeles 5 84 89
Riverside 5 21 26
San Diego 13 67 80
San Francisco 37 0 37
Santa Barbara 6 58 64
Santa Cruz 0 25 25
Lawrence Berkeley 0 0 0
Lawrence Livermore 0 0 0
Los Alamos 0 0 0
Other - UC 0 32 32
Other-Network UC n/a 102 102
_______ ______ _____
271 539 810
Per hour usage:
Time Sessions Finds Records Displayed
__________ __________ __________ _________________
12-2 a.m. 11 67 382
2-4 a.m. 16 251 1,627
4-6 a.m. 10 17 123
6-8 a.m. 16 77 123
8-10 a.m. 67 380 2,165
10-12 a.m. 136 551 3,050
12-2 p.m. 131 536 3,856
2-4 p.m. 153 552 5,368
4-6 p.m. 144 507 5,225
6-8 p.m. 65 277 2,412
8-10 p.m. 41 172 3,193
10-12 p.m. 20 61 1,689
__________ __________ __________ _________________
Total: 810 3,448 29,213
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 247 562 809
Davis 508 3 511
Irvine 123 0 123
Los Angeles 19 302 321
Riverside 8 85 93
San Diego 33 203 236
San Francisco 208 0 208
Santa Barbara 5 266 271
Santa Cruz 0 114 114
Lawrence Berkeley 0 0 0
Lawrence Livermore 0 0 0
Los Alamos 0 0 0
Other - UC 0 123 123
Other-Network UC n/a 639 639
_______ ______ _____
1,151 2,297 3,448
1.3 Records displayed
______________________
Zero results may indicate no access to the database
Number of Records Displayed by location:
Location Library Remote Total
________ _______ ______ _____
Berkeley 2,025 4,874 6,899
Davis 3,362 8 3,370
Irvine 1,782 0 1,782
Los Angeles 576 2,637 3,213
Riverside 262 713 975
San Diego 37 1,792 1,829
San Francisco 3,291 0 3,291
Santa Barbara 5 3,491 3,496
Santa Cruz 0 1,101 1,101
Lawrence Berkeley 0 0 0
Lawrence Livermore 0 0 0
Los Alamos 0 0 0
Other - UC 0 1,368 1,368
Other-Network UC n/a 1,889 1,889
_______ ______ _____
11,340 17,873 29,213
1.4 Response time
__________________
Search response time from receipt of command at
DLA until transmission of response:
Average in seconds 0.5
Standard deviation in seconds 1.3
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) 5:36
Average session length (minutes:seconds) 11:14
Longest session recorded (minutes:seconds) 131:50
Average number of searches completed per session 4.1
Retrievals per search - median 6.0
Retrievals per search - average 722.2
Retrievals per search - standard deviation 5968.9
Percent of searches completed with 0 results 24.1%
Percent of searches entered that are long 4.8%
Percent of long searches completed
(includes partial results) 41.3%
Commands entered, by type, excluding errors:
Total Percentage
__________ __________
FIND 3,070 32.5%
DISPLAY (excluding automatic displays) 3,518 37.3%
BROWSE 6 0.1%
SELECT 1 0.0%
HELP 143 1.5%
EXPLAIN 166 1.8%
SET/RESET 223 2.4%
SHOW 60 0.6%
ADD ON (AND, OR, AND NOT) 378 4.0%
LOGON or LOGOFF 1,235 13.1%
COMMENT 0 0.0%
SAVE 389 4.1%
USE 0 0.0%
OTHER 259 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 1,502 39.5% 266 17.7% 12 55.2 147.5
TITLE WORD 332 8.7% 100 30.1% 13 1402.2 7560.9
EXACT TITLE 41 1.1% 14 34.1% 1 10.1 20.3
JOURNAL 53 1.4% 14 26.4% 1,004 2079.4 2991.5
EXACT JOURNAL 36 0.9% 12 33.3% 168 604.2 1116.0
SUBJECT 240 6.3% 121 50.4% 1,713 9353.7 21136.3
EXACT SUBJECT 222 5.8% 166 74.8% 7 193.9 619.2
KEYWORD 675 17.8% 97 14.4% 41 1360.2 8591.1
FORM/PUB TYPE 21 0.6% 1 4.8% 598 365.9 326.5
DATE 462 12.2% 199 43.1% 5 30.3 185.3
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. 0 0.0% 0 0.0% 0 0.0 0.0
CONFERENCE 0 0.0% 0 0.0% 0 0.0 0.0
LANGUAGE 21 0.6% 2 9.5% 136 518.1 771.8
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 10 0.3% 0 0.0% 1 1.0 0.0
PERIODICAL 46 1.2% 9 19.6% 4 27.0 58.6
EXACT PE 6 0.2% 2 33.3% 14 15.3 15.1
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 131 3.4% 87 66.4% 11 35.7 47.9
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 636 21.2% 242 38.0% 5 55.6 256.2
Single 2,369 78.8% 514 21.7% 29 1281.3 7976.9
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 6 100% 2 33.3% 2 2.8 2.9
EXACT SUBJECT 0 0.0% 0 0.0% 0 0.0 0.0
DISPLAY commands, by type, excluding automatic displays:
REVIEW 3.1%
SHORT 88.0%
LONG 1.8%
TAGS 0.7%
FIELDS 2.4%
BROWSE REVIEW 0.1%
BROWSE LONG 0.0%
PERIODICALS 1.8%
COMMENTS 0.0%
Other 2.0%
2.2 Error, EXPLAIN and HELP statistics
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Percent of commands that contained errors 11.1%
Ten most frequent errors:
1. First word of command is invalid 28.1%
2. NS command - no next screen 21.5%
3. DISPLAY command - no FIND results 15.2%
4. FIND command with invalid index name 10.8%
5. PS command - no previous screen 5.3%
6. Search term missing from search command 2.7%
7. DISPLAY command contains invalid word 1.9%
8. Valid command at an inappropriate time 1.6%
9. DISPLAY command-record numbers too large 1.1%
10. Add-on search, no index name after verb 1.0%
11. All others 10.8%
Ten most frequent EXPLAIN requests:
1. LOCATE (INS/PSY DBS) 33.1%
2. GUIDE 18.1%
3. FIND (PSY DB) 7.8%
4. INDEXES (PSY DB) 6.6%
5. COMMANDS (ABI/PSY DBS) 4.2%
6. FIND LOCATION 3.6%
7. DISPLAY (INS/PSY DBS) 3.6%
8. ADDON SEARCH 3.6%
9. Unrecognized term 3.0%
10. LIMIT (PSY DB) 1.8%
11. All others 14.5%
Ten most frequent HELP situations:
1. Help requested from SET DB command 22.0%
2. First word of command is invalid 17.5%
3. FIND command with invalid index name 8.7%
4. DISPLAY command-first of >1 screen 8.4%
5. DISPLAY command - middle of >1 screen 6.5%
6. FIND command retrieves 1 book 4.2%
7. FIND command retrieves >1 book 4.2%
8. DISPLAY command-complete in one screen 3.9%
9. PS command - no previous screen 2.9%
10. FIND command with zero results 2.9%
11. All others 18.8%
Ten most frequent SHOW requests:
1. HISTORY 55.0%
2. SEARCH 28.3%
3. UPDATE 5.0%
4. FORM NAMES (PSY DB) 1.7%
5. PSYCINFO NEWS 1.7%
6. SYSTEM NEWS 1.7%
7. BROWSE DISPLAY 1.7%
8. MAIL SETTINGS 1.7%
9. 1620 1.7%
10. MAIL STATUS 1.7%
11. All others 0.0%
PSYmm/dd psy MELVYL PSYCINFO DATABASE TELNET STATISTICS (weekly)