MELVYL PSYCINFO DATABASE TELNET STATISTICS
Time period: 12/01/01 through 12/31/01
1.0 SUMMARY STATISTICS
_______________________
1.1 Total sessions:
____________________
Zero results may indicate no access to the database
Location Library Remote Total
________ _______ ______ _____
Berkeley 113 406 519
Davis 289 4 293
Irvine 87 0 87
Los Angeles 7 342 349
Riverside 9 77 86
San Diego 35 268 303
San Francisco 95 0 95
Santa Barbara 13 143 156
Santa Cruz 0 70 70
Lawrence Berkeley 0 0 0
Lawrence Livermore 0 0 0
Los Alamos 0 0 0
Other - UC 0 67 67
Other-Network UC n/a 426 426
_______ ______ _____
648 1,803 2,451
Per hour usage:
Time Sessions Finds Records Displayed
__________ __________ __________ _________________
12-2 a.m. 45 208 1,822
2-4 a.m. 71 1,167 5,199
4-6 a.m. 37 144 1,122
6-8 a.m. 53 259 1,298
8-10 a.m. 222 838 5,297
10-12 a.m. 495 1,909 13,447
12-2 p.m. 419 1,583 13,134
2-4 p.m. 449 1,594 12,706
4-6 p.m. 340 1,234 11,739
6-8 p.m. 173 783 8,044
8-10 p.m. 93 362 5,240
10-12 p.m. 54 229 3,367
__________ __________ __________ _________________
Total: 2,451 10,310 82,415
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 366 1,591 1,957
Davis 1,916 13 1,929
Irvine 349 0 349
Los Angeles 30 1,368 1,398
Riverside 14 346 360
San Diego 136 903 1,039
San Francisco 521 0 521
Santa Barbara 23 597 620
Santa Cruz 0 258 258
Lawrence Berkeley 0 0 0
Lawrence Livermore 0 0 0
Los Alamos 0 0 0
Other - UC 0 221 221
Other-Network UC n/a 1,658 1,658
_______ ______ _____
3,355 6,955 10,310
1.3 Records displayed
______________________
Zero results may indicate no access to the database
Number of Records Displayed by location:
Location Library Remote Total
________ _______ ______ _____
Berkeley 3,107 14,255 17,362
Davis 9,940 54 9,994
Irvine 4,483 0 4,483
Los Angeles 593 10,695 11,288
Riverside 294 4,001 4,295
San Diego 528 8,983 9,511
San Francisco 6,201 0 6,201
Santa Barbara 159 6,109 6,268
Santa Cruz 0 3,051 3,051
Lawrence Berkeley 0 0 0
Lawrence Livermore 0 0 0
Los Alamos 0 0 0
Other - UC 0 2,381 2,381
Other-Network UC n/a 7,581 7,581
_______ ______ _____
25,305 57,110 82,415
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 1.1
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) 5:56
Average session length (minutes:seconds) 12:54
Longest session recorded (minutes:seconds) 869:44
Average number of searches completed per session 4.1
Retrievals per search - median 5.0
Retrievals per search - average 597.8
Retrievals per search - standard deviation 6895.1
Percent of searches completed with 0 results 26.0%
Percent of searches entered that are long 4.3%
Percent of long searches completed
(includes partial results) 57.7%
Commands entered, by type, excluding errors:
Total Percentage
__________ __________
FIND 9,153 33.5%
DISPLAY (excluding automatic displays) 10,367 37.9%
BROWSE 16 0.1%
SELECT 1 0.0%
HELP 189 0.7%
EXPLAIN 227 0.8%
SET/RESET 781 2.9%
SHOW 81 0.3%
ADD ON (AND, OR, AND NOT) 1,157 4.2%
LOGON or LOGOFF 3,570 13.1%
COMMENT 0 0.0%
SAVE 1,002 3.7%
USE 0 0.0%
OTHER 793 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 4,670 38.8% 910 19.5% 13 60.3 201.1
TITLE WORD 1,004 8.3% 315 31.4% 9 542.8 4434.9
EXACT TITLE 74 0.6% 20 27.0% 2 10.4 18.5
JOURNAL 194 1.6% 57 29.4% 379 2370.2 3765.9
EXACT JOURNAL 84 0.7% 30 35.7% 146 618.9 1062.6
SUBJECT 397 3.3% 186 46.8% 736 8384.3 18259.7
EXACT SUBJECT 1,067 8.9% 754 70.7% 1 69.2 384.3
KEYWORD 1,900 15.8% 261 13.7% 35 1884.0 15114.7
FORM/PUB TYPE 35 0.3% 5 14.3% 17 245.7 315.9
DATE 1,771 14.7% 888 50.1% 4 27.7 168.8
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. 3 0.0% 1 33.3% 25 25.0 7.1
CONFERENCE 0 0.0% 0 0.0% 0 0.0 0.0
LANGUAGE 24 0.2% 2 8.3% 382 1873.0 4521.4
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 27 0.2% 0 0.0% 1 1.0 0.0
PERIODICAL 141 1.2% 20 14.2% 5 54.5 215.0
EXACT PE 33 0.3% 9 27.3% 3 7.0 8.9
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 621 5.2% 369 59.4% 1 33.0 261.7
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 2,315 25.7% 1,038 44.8% 4 54.8 425.1
Single 6,695 74.3% 1,355 20.2% 27 1081.9 9436.6
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 16 100% 5 31.3% 1 3.2 4.6
EXACT SUBJECT 0 0.0% 0 0.0% 0 0.0 0.0
DISPLAY commands, by type, excluding automatic displays:
REVIEW 3.0%
SHORT 86.5%
LONG 1.3%
TAGS 1.7%
FIELDS 3.7%
BROWSE REVIEW 0.1%
BROWSE LONG 0.1%
PERIODICALS 2.2%
COMMENTS 0.0%
Other 1.6%
2.2 Error, EXPLAIN and HELP statistics
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Percent of commands that contained errors 10.1%
Ten most frequent errors:
1. DISPLAY command - no FIND results 25.2%
2. NS command - no next screen 24.7%
3. First word of command is invalid 20.6%
4. FIND command with invalid index name 8.3%
5. PS command - no previous screen 3.4%
6. DISPLAY command contains invalid word 2.8%
7. Search term missing from search command 2.2%
8. Valid command at an inappropriate time 1.2%
9. Add-on search, no index name after verb 1.1%
10. DISPLAY command-record numbers too large 1.1%
11. All others 9.2%
Ten most frequent EXPLAIN requests:
1. LOCATE (INS/PSY DBS) 30.0%
2. GUIDE 17.6%
3. INDEXES (PSY DB) 8.4%
4. FIND (PSY DB) 8.4%
5. COMMANDS (ABI/PSY DBS) 4.8%
6. ADDON SEARCH 3.5%
7. FIND LOCATION 3.1%
8. DISPLAY (INS/PSY DBS) 3.1%
9. Unrecognized term 2.6%
10. LIMIT (PSY DB) 1.8%
11. All others 16.7%
Ten most frequent HELP situations:
1. Help requested from SET DB command 20.7%
2. First word of command is invalid 16.6%
3. DISPLAY command-first of >1 screen 9.1%
4. FIND command with invalid index name 8.9%
5. DISPLAY command - middle of >1 screen 7.2%
6. FIND command retrieves >1 book 3.8%
7. FIND command with zero results 3.6%
8. FIND command retrieves 1 book 3.4%
9. DISPLAY command-complete in one screen 3.4%
10. PS command - no previous screen 2.9%
11. All others 20.4%
Ten most frequent SHOW requests:
1. HISTORY 62.5%
2. SEARCH 25.0%
3. UPDATE 3.8%
4. FORM NAMES (PSY DB) 1.3%
5. PSYCINFO NEWS 1.3%
6. SYSTEM NEWS 1.3%
7. BROWSE DISPLAY 1.3%
8. MAIL SETTINGS 1.3%
9. 1620 1.3%
10. MAIL STATUS 1.3%
11. All others 0.0%
PSYmm/dd psy MELVYL PSYCINFO DATABASE TELNET STATISTICS (weekly)