MELVYL PSYCINFO DATABASE TELNET STATISTICS
Time period: 06/02/01 through 06/08/01
1.0 SUMMARY STATISTICS
_______________________
1.1 Total sessions:
____________________
Zero results may indicate no access to the database
Location Library Remote Total
________ _______ ______ _____
Berkeley 30 135 165
Davis 153 0 153
Irvine 77 0 77
Los Angeles 2 136 138
Riverside 13 33 46
San Diego 11 107 118
San Francisco 38 0 38
Santa Barbara 10 33 43
Santa Cruz 7 16 23
Lawrence Berkeley 0 0 0
Lawrence Livermore 0 0 0
Los Alamos 0 0 0
Other - UC 2 36 38
Other-Network UC n/a 109 109
_______ ______ _____
343 605 948
Per hour usage:
Time Sessions Finds Records Displayed
__________ __________ __________ _________________
12-2 a.m. 13 53 334
2-4 a.m. 21 270 1,310
4-6 a.m. 24 274 1,456
6-8 a.m. 7 19 394
8-10 a.m. 85 286 1,833
10-12 a.m. 160 609 7,270
12-2 p.m. 215 842 7,227
2-4 p.m. 184 547 5,485
4-6 p.m. 126 524 3,993
6-8 p.m. 49 202 2,605
8-10 p.m. 39 211 2,585
10-12 p.m. 25 181 919
__________ __________ __________ _________________
Total: 948 4,018 35,411
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 99 524 623
Davis 891 0 891
Irvine 238 0 238
Los Angeles 10 573 583
Riverside 105 137 242
San Diego 94 428 522
San Francisco 134 0 134
Santa Barbara 43 100 143
Santa Cruz 13 32 45
Lawrence Berkeley 0 0 0
Lawrence Livermore 0 0 0
Los Alamos 0 0 0
Other - UC 1 133 134
Other-Network UC n/a 463 463
_______ ______ _____
1,628 2,390 4,018
1.3 Records displayed
______________________
Zero results may indicate no access to the database
Number of Records Displayed by location:
Location Library Remote Total
________ _______ ______ _____
Berkeley 2,333 3,941 6,274
Davis 5,718 0 5,718
Irvine 2,910 0 2,910
Los Angeles 53 5,443 5,496
Riverside 1,061 934 1,995
San Diego 419 3,304 3,723
San Francisco 1,690 0 1,690
Santa Barbara 230 1,993 2,223
Santa Cruz 95 323 418
Lawrence Berkeley 0 0 0
Lawrence Livermore 0 0 0
Los Alamos 0 0 0
Other - UC 2 1,566 1,568
Other-Network UC n/a 3,396 3,396
_______ ______ _____
14,511 20,900 35,411
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 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) 7:39
Average session length (minutes:seconds) 13:18
Longest session recorded (minutes:seconds) 433:50
Average number of searches completed per session 4.2
Retrievals per search - median 5.0
Retrievals per search - average 357.5
Retrievals per search - standard deviation 2695.6
Percent of searches completed with 0 results 27.5%
Percent of searches entered that are long 3.9%
Percent of long searches completed
(includes partial results) 71.2%
Commands entered, by type, excluding errors:
Total Percentage
__________ __________
FIND 3,673 32.2%
DISPLAY (excluding automatic displays) 4,453 39.1%
BROWSE 7 0.1%
SELECT 0 0.0%
HELP 82 0.7%
EXPLAIN 123 1.1%
SET/RESET 294 2.6%
SHOW 32 0.3%
ADD ON (AND, OR, AND NOT) 345 3.0%
LOGON or LOGOFF 1,440 12.6%
COMMENT 0 0.0%
SAVE 608 5.3%
USE 5 0.0%
OTHER 344 3.0%
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 1,513 31.5% 311 20.6% 10 65.9 311.0
TITLE WORD 357 7.4% 102 28.6% 11 104.9 363.0
EXACT TITLE 59 1.2% 24 40.7% 1 12.1 49.1
JOURNAL 138 2.9% 45 32.6% 261 2438.3 5384.0
EXACT JOURNAL 20 0.4% 5 25.0% 369 1295.5 2148.1
SUBJECT 198 4.1% 97 49.0% 187 3284.8 12151.4
EXACT SUBJECT 461 9.6% 341 74.0% 2 120.1 905.4
KEYWORD 978 20.3% 168 17.2% 31 797.0 3348.3
FORM/PUB TYPE 12 0.2% 0 0.0% 98 933.7 1240.4
DATE 656 13.6% 386 58.8% 3 44.2 244.7
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% 20 20.0 0.0
CONFERENCE 0 0.0% 0 0.0% 0 0.0 0.0
LANGUAGE 11 0.2% 0 0.0% 1,832 1824.6 2379.8
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 15 0.3% 0 0.0% 1 1.0 0.0
PERIODICAL 90 1.9% 12 13.3% 5 75.2 458.7
EXACT PE 11 0.2% 3 27.3% 10 77.9 132.3
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 288 6.0% 182 63.2% 5 134.5 1013.8
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 880 24.3% 441 50.1% 5 81.2 496.0
Single 2,746 75.7% 592 21.6% 22 615.9 3620.0
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 7 100% 4 57.1% 1 1.0 0.0
EXACT SUBJECT 0 0.0% 0 0.0% 0 0.0 0.0
DISPLAY commands, by type, excluding automatic displays:
REVIEW 1.8%
SHORT 87.5%
LONG 1.1%
TAGS 1.3%
FIELDS 3.9%
BROWSE REVIEW 0.1%
BROWSE LONG 0.0%
PERIODICALS 2.5%
COMMENTS 0.0%
Other 1.8%
2.2 Error, EXPLAIN and HELP statistics
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Percent of commands that contained errors 10.3%
Ten most frequent errors:
1. DISPLAY command - no FIND results 27.2%
2. NS command - no next screen 26.7%
3. First word of command is invalid 20.5%
4. FIND command with invalid index name 6.6%
5. PS command - no previous screen 3.9%
6. DISPLAY command contains invalid word 2.4%
7. Search term missing from search command 1.6%
8. DISPLAY command-record numbers too large 1.4%
9. Valid command at an inappropriate time 1.1%
10. Add-on search, no index name after verb 0.9%
11. All others 7.7%
Ten most frequent EXPLAIN requests:
1. GUIDE 28.5%
2. LOCATE (INS/PSY DBS) 21.1%
3. FIND (PSY DB) 8.9%
4. MAIL 3.3%
5. Unrecognized term 3.3%
6. COMMANDS (ABI/PSY DBS) 2.4%
7. NRLF 2.4%
8. PRINT 2.4%
9. DATABASES 2.4%
10. LOCATE (PE DB) 2.4%
11. All others 22.8%
Ten most frequent HELP situations:
1. Help requested from SET DB command 28.3%
2. First word of command is invalid 13.7%
3. FIND command with invalid index name 8.3%
4. DISPLAY command - middle of >1 screen 6.8%
5. DISPLAY command-first of >1 screen 6.3%
6. FIND command with zero results 5.4%
7. NS command - no next screen 3.4%
8. PS command - no previous screen 3.4%
9. DISPLAY command-complete in one screen 2.9%
10. DISPLAY command - last of >1 screen 2.4%
11. All others 19.0%
Ten most frequent SHOW requests:
1. SEARCH 37.0%
2. HISTORY 29.6%
3. PSYCINFO NEWS 14.8%
4. PUBLICATION TYPES (PSY DB) 7.4%
5. X075 3.7%
6. MAIL SETTINGS 3.7%
7. MAIL STATUS 3.7%
11. All others 0.0%
PSYmm/dd psy MELVYL PSYCINFO DATABASE TELNET STATISTICS (weekly)