MELVYL PSYCINFO DATABASE TELNET STATISTICS
Time period: 06/23/01 through 06/29/01
1.0 SUMMARY STATISTICS
_______________________
1.1 Total sessions:
____________________
Zero results may indicate no access to the database
Location Library Remote Total
________ _______ ______ _____
Berkeley 35 126 161
Davis 163 0 163
Irvine 49 0 49
Los Angeles 2 83 85
Riverside 14 23 37
San Diego 7 83 90
San Francisco 42 0 42
Santa Barbara 2 24 26
Santa Cruz 5 5 10
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 166 166
_______ ______ _____
319 542 861
Per hour usage:
Time Sessions Finds Records Displayed
__________ __________ __________ _________________
12-2 a.m. 11 31 265
2-4 a.m. 22 283 655
4-6 a.m. 19 279 832
6-8 a.m. 21 52 655
8-10 a.m. 87 298 2,385
10-12 a.m. 146 484 3,228
12-2 p.m. 148 555 7,554
2-4 p.m. 199 646 7,624
4-6 p.m. 114 425 4,309
6-8 p.m. 48 182 2,088
8-10 p.m. 22 69 631
10-12 p.m. 24 119 956
__________ __________ __________ _________________
Total: 861 3,423 31,182
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 142 370 512
Davis 987 0 987
Irvine 146 0 146
Los Angeles 4 334 338
Riverside 56 137 193
San Diego 24 263 287
San Francisco 137 0 137
Santa Barbara 3 144 147
Santa Cruz 6 7 13
Lawrence Berkeley 0 0 0
Lawrence Livermore 0 0 0
Los Alamos 0 0 0
Other - UC 0 125 125
Other-Network UC n/a 538 538
_______ ______ _____
1,505 1,918 3,423
1.3 Records displayed
______________________
Zero results may indicate no access to the database
Number of Records Displayed by location:
Location Library Remote Total
________ _______ ______ _____
Berkeley 1,945 4,419 6,364
Davis 5,782 0 5,782
Irvine 1,186 0 1,186
Los Angeles 39 4,318 4,357
Riverside 763 773 1,536
San Diego 15 2,432 2,447
San Francisco 2,678 0 2,678
Santa Barbara 3 1,083 1,086
Santa Cruz 178 100 278
Lawrence Berkeley 0 0 0
Lawrence Livermore 0 0 0
Los Alamos 0 0 0
Other - UC 0 1,030 1,030
Other-Network UC n/a 4,438 4,438
_______ ______ _____
12,589 18,593 31,182
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 1.2
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) 7:54
Average session length (minutes:seconds) 12:56
Longest session recorded (minutes:seconds) 235:12
Average number of searches completed per session 3.9
Retrievals per search - median 4.0
Retrievals per search - average 493.7
Retrievals per search - standard deviation 6327.6
Percent of searches completed with 0 results 29.1%
Percent of searches entered that are long 3.2%
Percent of long searches completed
(includes partial results) 77.3%
Commands entered, by type, excluding errors:
Total Percentage
__________ __________
FIND 3,085 31.5%
DISPLAY (excluding automatic displays) 3,545 36.2%
BROWSE 3 0.0%
SELECT 3 0.0%
HELP 94 1.0%
EXPLAIN 97 1.0%
SET/RESET 280 2.9%
SHOW 40 0.4%
ADD ON (AND, OR, AND NOT) 336 3.4%
LOGON or LOGOFF 1,292 13.2%
COMMENT 0 0.0%
SAVE 742 7.6%
USE 1 0.0%
OTHER 280 2.9%
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 1,385 32.6% 291 21.0% 12 59.2 189.1
TITLE WORD 293 6.9% 97 33.1% 9 185.8 1207.4
EXACT TITLE 43 1.0% 19 44.2% 1 9.3 13.8
JOURNAL 39 0.9% 20 51.3% 458 1207.2 2217.6
EXACT JOURNAL 19 0.4% 4 21.1% 608 849.5 946.0
SUBJECT 163 3.8% 74 45.4% 186 6020.8 18422.3
EXACT SUBJECT 495 11.6% 325 65.7% 2 6.3 11.3
KEYWORD 697 16.4% 101 14.5% 55 1247.1 10130.9
FORM/PUB TYPE 7 0.2% 2 28.6% 15 21.6 19.4
DATE 740 17.4% 370 50.0% 3 96.0 929.0
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 5 0.1% 0 0.0% 286 340.6 323.0
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 14 0.3% 0 0.0% 1 1.0 0.0
PERIODICAL 49 1.2% 14 28.6% 3 132.9 681.9
EXACT PE 10 0.2% 2 20.0% 6 49.3 99.7
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 292 6.9% 149 51.0% 2 11.5 40.8
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 869 28.4% 403 46.4% 3 88.0 831.0
Single 2,196 71.6% 502 22.9% 23 813.4 7456.5
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 3 100% 1 33.3% 14 13.5 17.7
EXACT SUBJECT 0 0.0% 0 0.0% 0 0.0 0.0
DISPLAY commands, by type, excluding automatic displays:
REVIEW 2.5%
SHORT 86.7%
LONG 0.7%
TAGS 1.5%
FIELDS 5.2%
BROWSE REVIEW 0.0%
BROWSE LONG 0.0%
PERIODICALS 1.6%
COMMENTS 0.0%
Other 1.7%
2.2 Error, EXPLAIN and HELP statistics
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Percent of commands that contained errors 10.8%
Ten most frequent errors:
1. DISPLAY command - no FIND results 28.7%
2. NS command - no next screen 27.0%
3. First word of command is invalid 21.5%
4. FIND command with invalid index name 5.8%
5. PS command - no previous screen 2.4%
6. DISPLAY command contains invalid word 2.2%
7. Valid command at an inappropriate time 2.0%
8. DISPLAY command-record numbers too large 1.2%
9. Search term missing from search command 1.2%
10. Add-on search, no index name after verb 1.0%
11. All others 6.8%
Ten most frequent EXPLAIN requests:
1. GUIDE 21.6%
2. LOCATE (INS/PSY DBS) 20.6%
3. DISPLAY (INS/PSY DBS) 8.2%
4. FIND (PSY DB) 8.2%
5. Unrecognized term 7.2%
6. SEARCH (PSY DB) 6.2%
7. INDEXES (PSY DB) 5.2%
8. MAIL 4.1%
9. COMMANDS (ABI/PSY DBS) 3.1%
10. DATABASES 3.1%
11. All others 12.4%
Ten most frequent HELP situations:
1. Help requested from SET DB command 16.8%
2. First word of command is invalid 15.7%
3. DISPLAY command-first of >1 screen 8.9%
4. FIND command with invalid index name 6.3%
5. FIND command retrieves >1 book 6.3%
6. FIND command with zero results 5.8%
7. DISPLAY command - middle of >1 screen 5.8%
8. NS command - no next screen 4.7%
9. DISPLAY command - last of >1 screen 4.2%
10. Help requested from SHOW SEARCH 3.7%
11. All others 22.0%
Ten most frequent SHOW requests:
1. HISTORY 71.8%
2. SEARCH 20.5%
3. PUBLICATION TYPES (PSY DB) 2.6%
4. MAIL SETTINGS 2.6%
5. MAIL STATUS 2.6%
11. All others 0.0%
PSYmm/dd psy MELVYL PSYCINFO DATABASE TELNET STATISTICS (weekly)