MELVYL PSYCINFO DATABASE TELNET STATISTICS
Time period: 05/01/02 through 05/31/02
1.0 SUMMARY STATISTICS
_______________________
1.1 Total sessions:
____________________
Zero results may indicate no access to the database
Location Library Remote Total
________ _______ ______ _____
Berkeley 74 581 655
Davis 535 3 538
Irvine 175 0 175
Los Angeles 12 361 373
Riverside 3 91 94
San Diego 42 269 311
San Francisco 58 0 58
Santa Barbara 31 118 149
Santa Cruz 10 135 145
Lawrence Berkeley 0 0 0
Lawrence Livermore 0 0 0
Los Alamos 0 0 0
Other - UC 0 80 80
Other-Network UC n/a 326 326
_______ ______ _____
940 1,964 2,904
Per hour usage:
Time Sessions Finds Records Displayed
__________ __________ __________ _________________
12-2 a.m. 48 293 3,270
2-4 a.m. 84 1,092 2,401
4-6 a.m. 25 55 530
6-8 a.m. 54 148 986
8-10 a.m. 306 1,096 7,673
10-12 a.m. 536 2,063 19,764
12-2 p.m. 506 2,052 21,012
2-4 p.m. 558 1,883 21,722
4-6 p.m. 397 1,435 15,647
6-8 p.m. 177 788 6,506
8-10 p.m. 145 450 5,009
10-12 p.m. 68 318 2,529
__________ __________ __________ _________________
Total: 2,904 11,673 107,049
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 316 2,439 2,755
Davis 2,675 4 2,679
Irvine 541 0 541
Los Angeles 67 1,332 1,399
Riverside 1 282 283
San Diego 173 770 943
San Francisco 254 0 254
Santa Barbara 74 494 568
Santa Cruz 13 724 737
Lawrence Berkeley 0 0 0
Lawrence Livermore 0 0 0
Los Alamos 0 0 0
Other - UC 0 411 411
Other-Network UC n/a 1,103 1,103
_______ ______ _____
4,114 7,559 11,673
1.3 Records displayed
______________________
Zero results may indicate no access to the database
Number of Records Displayed by location:
Location Library Remote Total
________ _______ ______ _____
Berkeley 3,586 23,016 26,602
Davis 16,777 110 16,887
Irvine 3,563 0 3,563
Los Angeles 1,384 17,986 19,370
Riverside 29 2,443 2,472
San Diego 3,299 8,645 11,944
San Francisco 1,548 0 1,548
Santa Barbara 367 6,926 7,293
Santa Cruz 50 5,972 6,022
Lawrence Berkeley 0 0 0
Lawrence Livermore 0 0 0
Los Alamos 0 0 0
Other - UC 0 3,923 3,923
Other-Network UC n/a 7,425 7,425
_______ ______ _____
30,603 76,446 107,049
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 1.0
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) 7:16
Average session length (minutes:seconds) 12:38
Longest session recorded (minutes:seconds) 377:57
Average number of searches completed per session 4.0
Retrievals per search - median 6.0
Retrievals per search - average 871.8
Retrievals per search - standard deviation 9092.9
Percent of searches completed with 0 results 25.6%
Percent of searches entered that are long 3.0%
Percent of long searches completed
(includes partial results) 66.3%
Commands entered, by type, excluding errors:
Total Percentage
__________ __________
FIND 10,616 30.7%
DISPLAY (excluding automatic displays) 14,371 41.5%
BROWSE 17 0.0%
SELECT 1 0.0%
HELP 354 1.0%
EXPLAIN 368 1.1%
SET/RESET 741 2.1%
SHOW 121 0.3%
ADD ON (AND, OR, AND NOT) 1,057 3.1%
LOGON or LOGOFF 4,623 13.4%
COMMENT 0 0.0%
SAVE 1,415 4.1%
USE 1 0.0%
OTHER 938 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 4,796 35.7% 888 18.5% 14 49.2 144.6
TITLE WORD 1,163 8.7% 323 27.8% 8 354.2 4195.7
EXACT TITLE 120 0.9% 57 47.5% 1 71.3 189.9
JOURNAL 257 1.9% 58 22.6% 475 2357.8 7365.4
EXACT JOURNAL 175 1.3% 43 24.6% 257 1017.2 2087.0
SUBJECT 1,012 7.5% 462 45.6% 919 6749.3 16930.4
EXACT SUBJECT 999 7.4% 697 69.8% 1 162.2 1384.8
KEYWORD 2,278 17.0% 365 16.0% 37 2468.1 19217.7
FORM/PUB TYPE 27 0.2% 3 11.1% 394 1596.8 1827.4
DATE 1,597 11.9% 772 48.3% 3 90.4 605.6
ADDED 0 0.0% 0 0.0% 0 0.0 0.0
ARTICLE 6 0.0% 0 0.0% 7,691 6806.0 5384.8
AUTHOR AFFIL. 4 0.0% 0 0.0% 109 378.5 599.2
CONFERENCE 0 0.0% 0 0.0% 0 0.0 0.0
LANGUAGE 7 0.1% 0 0.0% 552 2325.1 2806.8
ISSN 1 0.0% 0 0.0% 681 681.0 0.0
ISBN 0 0.0% 0 0.0% 0 0.0 0.0
ID NUMBER 28 0.2% 0 0.0% 1 1.0 0.0
PERIODICAL 342 2.5% 54 15.8% 5 276.7 1742.2
EXACT PE 41 0.3% 6 14.6% 2 18.5 59.5
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 578 4.3% 322 55.7% 2 20.5 238.8
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 2,282 21.7% 947 41.5% 4 219.9 2972.1
Single 8,218 78.3% 1,808 22.0% 26 1436.1 11804.6
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 17 100% 4 23.5% 2 6.4 9.9
EXACT SUBJECT 0 0.0% 0 0.0% 0 0.0 0.0
DISPLAY commands, by type, excluding automatic displays:
REVIEW 1.8%
SHORT 87.9%
LONG 0.9%
TAGS 1.2%
FIELDS 2.8%
BROWSE REVIEW 0.1%
BROWSE LONG 0.1%
PERIODICALS 3.6%
COMMENTS 0.0%
Other 1.6%
2.2 Error, EXPLAIN and HELP statistics
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Percent of commands that contained errors 10.0%
Ten most frequent errors:
1. NS command - no next screen 26.6%
2. First word of command is invalid 22.7%
3. DISPLAY command - no FIND results 18.9%
4. FIND command with invalid index name 9.2%
5. PS command - no previous screen 4.8%
6. DISPLAY command contains invalid word 3.0%
7. Search term missing from search command 2.2%
8. Valid command at an inappropriate time 2.0%
9. DISPLAY command-record numbers too large 1.2%
10. Command contains escape or arrow key 1.1%
11. All others 8.3%
Ten most frequent EXPLAIN requests:
1. LOCATE (INS/PSY DBS) 31.8%
2. GUIDE 29.1%
3. FIND (PSY DB) 7.1%
4. COMMANDS (ABI/PSY DBS) 4.3%
5. INDEXES (PSY DB) 4.3%
6. Unrecognized term 3.5%
7. ADDON SEARCH 2.4%
8. FIND LOCATION 1.6%
9. DISPLAY (INS/PSY DBS) 1.6%
10. LOCATE (PE DB) 1.6%
11. All others 12.5%
Ten most frequent HELP situations:
1. Help requested from SET DB command 24.5%
2. First word of command is invalid 11.6%
3. FIND command with invalid index name 10.9%
4. DISPLAY command-first of >1 screen 10.1%
5. DISPLAY command - middle of >1 screen 6.4%
6. FIND command with zero results 5.8%
7. DISPLAY command-complete in one screen 4.4%
8. DISPLAY command - last of >1 screen 3.9%
9. FIND command retrieves >1 book 3.3%
10. Valid command at an inappropriate time 2.4%
11. All others 16.6%
Ten most frequent SHOW requests:
1. HISTORY 36.2%
2. SEARCH 25.0%
3. MAIL STATUS 19.8%
4. PSYCINFO NEWS 7.8%
5. SETTINGS (INS/PSY DBS) 3.4%
6. DISPLAY (MED/INS/PSY DBS) 2.6%
7. UPDATE 2.6%
8. IAC STATISTICS 0.9%
9. GLOSSARY 0.9%
10. MAIL SETTINGS 0.9%
11. All others 0.0%
PSYmm/dd psy MELVYL PSYCINFO DATABASE TELNET STATISTICS (weekly)