MELVYL PSYCINFO DATABASE TELNET STATISTICS
Time period: 05/26/01 through 06/01/01
1.0 SUMMARY STATISTICS
_______________________
1.1 Total sessions:
____________________
Zero results may indicate no access to the database
Location Library Remote Total
________ _______ ______ _____
Berkeley 19 90 109
Davis 130 0 130
Irvine 75 0 75
Los Angeles 3 119 122
Riverside 1 12 13
San Diego 10 151 161
San Francisco 49 0 49
Santa Barbara 7 43 50
Santa Cruz 31 37 68
Lawrence Berkeley 0 0 0
Lawrence Livermore 0 0 0
Los Alamos 0 0 0
Other - UC 0 31 31
Other-Network UC n/a 132 132
_______ ______ _____
325 615 940
Per hour usage:
Time Sessions Finds Records Displayed
__________ __________ __________ _________________
12-2 a.m. 13 39 547
2-4 a.m. 15 254 610
4-6 a.m. 20 275 908
6-8 a.m. 25 82 827
8-10 a.m. 100 356 2,242
10-12 a.m. 144 515 6,021
12-2 p.m. 142 453 4,470
2-4 p.m. 193 640 5,748
4-6 p.m. 119 443 6,682
6-8 p.m. 66 256 3,497
8-10 p.m. 62 261 2,692
10-12 p.m. 41 209 2,272
__________ __________ __________ _________________
Total: 940 3,783 36,516
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 42 313 355
Davis 817 1 818
Irvine 290 0 290
Los Angeles 13 471 484
Riverside 1 36 37
San Diego 34 570 604
San Francisco 209 0 209
Santa Barbara 35 152 187
Santa Cruz 75 111 186
Lawrence Berkeley 0 0 0
Lawrence Livermore 0 0 0
Los Alamos 0 0 0
Other - UC 0 120 120
Other-Network UC n/a 493 493
_______ ______ _____
1,516 2,267 3,783
1.3 Records displayed
______________________
Zero results may indicate no access to the database
Number of Records Displayed by location:
Location Library Remote Total
________ _______ ______ _____
Berkeley 543 2,743 3,286
Davis 4,138 0 4,138
Irvine 2,889 0 2,889
Los Angeles 106 9,217 9,323
Riverside 6 395 401
San Diego 249 3,757 4,006
San Francisco 2,190 0 2,190
Santa Barbara 216 1,448 1,664
Santa Cruz 1,149 1,052 2,201
Lawrence Berkeley 0 0 0
Lawrence Livermore 0 0 0
Los Alamos 0 0 0
Other - UC 0 837 837
Other-Network UC n/a 5,581 5,581
_______ ______ _____
11,486 25,030 36,516
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) 7:26
Average session length (minutes:seconds) 12:42
Longest session recorded (minutes:seconds) 515:20
Average number of searches completed per session 4.0
Retrievals per search - median 6.0
Retrievals per search - average 698.1
Retrievals per search - standard deviation 7305.2
Percent of searches completed with 0 results 26.8%
Percent of searches entered that are long 3.5%
Percent of long searches completed
(includes partial results) 60.3%
Commands entered, by type, excluding errors:
Total Percentage
__________ __________
FIND 3,391 31.6%
DISPLAY (excluding automatic displays) 4,258 39.6%
BROWSE 15 0.1%
SELECT 5 0.0%
HELP 107 1.0%
EXPLAIN 134 1.2%
SET/RESET 285 2.7%
SHOW 19 0.2%
ADD ON (AND, OR, AND NOT) 391 3.6%
LOGON or LOGOFF 1,441 13.4%
COMMENT 1 0.0%
SAVE 373 3.5%
USE 4 0.0%
OTHER 336 3.1%
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 1,431 31.5% 257 18.0% 17 72.5 224.8
TITLE WORD 357 7.9% 114 31.9% 12 658.0 6626.9
EXACT TITLE 54 1.2% 21 38.9% 3 9.0 11.1
JOURNAL 63 1.4% 27 42.9% 101 1275.2 2596.8
EXACT JOURNAL 52 1.1% 22 42.3% 595 1398.9 2730.7
SUBJECT 158 3.5% 80 50.6% 374 8072.5 21558.7
EXACT SUBJECT 501 11.0% 346 69.1% 1 208.4 1441.1
KEYWORD 786 17.3% 116 14.8% 59 1642.2 10352.3
FORM/PUB TYPE 14 0.3% 5 35.7% 61 297.6 667.7
DATE 706 15.6% 379 53.7% 4 13.5 31.6
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. 5 0.1% 4 80.0% 60 60.0 0.0
CONFERENCE 0 0.0% 0 0.0% 0 0.0 0.0
LANGUAGE 8 0.2% 0 0.0% 13 83.6 141.5
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 14 0.3% 0 0.0% 1 1.0 0.0
PERIODICAL 64 1.4% 10 15.6% 2 32.5 160.6
EXACT PE 18 0.4% 1 5.6% 2 4.8 6.5
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 305 6.7% 166 54.4% 2 59.1 335.4
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 875 26.2% 426 48.7% 5 23.6 107.1
Single 2,468 73.8% 516 20.9% 32 1071.2 7967.1
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 15 100% 5 33.3% 3 10.0 12.2
EXACT SUBJECT 0 0.0% 0 0.0% 0 0.0 0.0
DISPLAY commands, by type, excluding automatic displays:
REVIEW 2.9%
SHORT 85.2%
LONG 0.6%
TAGS 1.9%
FIELDS 5.0%
BROWSE REVIEW 0.2%
BROWSE LONG 0.1%
PERIODICALS 2.5%
COMMENTS 0.0%
Other 1.6%
2.2 Error, EXPLAIN and HELP statistics
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Percent of commands that contained errors 10.8%
Ten most frequent errors:
1. NS command - no next screen 28.0%
2. DISPLAY command - no FIND results 27.4%
3. First word of command is invalid 18.7%
4. FIND command with invalid index name 6.8%
5. PS command - no previous screen 3.9%
6. DISPLAY command contains invalid word 2.0%
7. Search term missing from search command 1.6%
8. Valid command at an inappropriate time 1.5%
9. DISPLAY command-record numbers too large 1.0%
10. Add-on search, no index name after verb 0.8%
11. All others 8.2%
Ten most frequent EXPLAIN requests:
1. LOCATE (INS/PSY DBS) 36.6%
2. GUIDE 17.2%
3. COMMANDS (ABI/PSY DBS) 13.4%
4. FIND (PSY DB) 4.5%
5. MAIL 3.7%
6. FIND LOCATION 3.0%
7. DISPLAY (INS/PSY DBS) 2.2%
8. SAVE 2.2%
9. ADDON SEARCH 2.2%
10. MAGS TEXT 1.5%
11. All others 13.4%
Ten most frequent HELP situations:
1. DISPLAY command-first of >1 screen 19.1%
2. Help requested from SET DB command 16.6%
3. First word of command is invalid 10.4%
4. FIND command with invalid index name 7.5%
5. DISPLAY command - middle of >1 screen 7.1%
6. FIND command with zero results 5.0%
7. FIND command retrieves >1 book 4.6%
8. DISPLAY command-complete in one screen 3.7%
9. PS command - no previous screen 3.3%
10. DISPLAY command - last of >1 screen 2.9%
11. All others 19.9%
Ten most frequent SHOW requests:
1. HISTORY 57.9%
2. PSYCINFO NEWS 15.8%
3. SEARCH 15.8%
4. LOCATION 5.3%
5. MAIL STATUS 5.3%
11. All others 0.0%
PSYmm/dd psy MELVYL PSYCINFO DATABASE TELNET STATISTICS (weekly)