MELVYL PSYCINFO DATABASE TELNET STATISTICS
Time period: 05/05/01 through 05/11/01
1.0 SUMMARY STATISTICS
_______________________
1.1 Total sessions:
____________________
Zero results may indicate no access to the database
Location Library Remote Total
________ _______ ______ _____
Berkeley 43 207 250
Davis 126 5 131
Irvine 67 0 67
Los Angeles 0 142 142
Riverside 13 46 59
San Diego 14 128 142
San Francisco 52 0 52
Santa Barbara 8 33 41
Santa Cruz 22 34 56
Lawrence Berkeley 0 0 0
Lawrence Livermore 0 0 0
Los Alamos 0 0 0
Other - UC 2 25 27
Other-Network UC n/a 168 168
_______ ______ _____
347 788 1,135
Per hour usage:
Time Sessions Finds Records Displayed
__________ __________ __________ _________________
12-2 a.m. 8 16 192
2-4 a.m. 10 215 510
4-6 a.m. 29 290 1,551
6-8 a.m. 15 31 483
8-10 a.m. 98 386 3,103
10-12 a.m. 216 743 6,266
12-2 p.m. 197 754 7,887
2-4 p.m. 229 887 9,900
4-6 p.m. 174 653 6,068
6-8 p.m. 68 362 4,759
8-10 p.m. 50 266 1,747
10-12 p.m. 41 189 1,871
__________ __________ __________ _________________
Total: 1,135 4,792 44,337
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 241 1,030 1,271
Davis 821 14 835
Irvine 202 0 202
Los Angeles 0 526 526
Riverside 43 168 211
San Diego 96 374 470
San Francisco 178 0 178
Santa Barbara 14 152 166
Santa Cruz 60 107 167
Lawrence Berkeley 0 0 0
Lawrence Livermore 0 0 0
Los Alamos 0 0 0
Other - UC 1 117 118
Other-Network UC n/a 648 648
_______ ______ _____
1,656 3,136 4,792
1.3 Records displayed
______________________
Zero results may indicate no access to the database
Number of Records Displayed by location:
Location Library Remote Total
________ _______ ______ _____
Berkeley 1,972 10,274 12,246
Davis 4,467 66 4,533
Irvine 2,426 0 2,426
Los Angeles 0 7,681 7,681
Riverside 107 1,418 1,525
San Diego 396 4,400 4,796
San Francisco 1,631 0 1,631
Santa Barbara 94 1,376 1,470
Santa Cruz 442 1,478 1,920
Lawrence Berkeley 0 0 0
Lawrence Livermore 0 0 0
Los Alamos 0 0 0
Other - UC 13 1,464 1,477
Other-Network UC n/a 4,632 4,632
_______ ______ _____
11,548 32,789 44,337
1.4 Response time
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Search response time from receipt of command at
DLA until transmission of response:
Average in seconds 0.6
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) 8:07
Average session length (minutes:seconds) 13:12
Longest session recorded (minutes:seconds) 429:36
Average number of searches completed per session 4.2
Retrievals per search - median 7.0
Retrievals per search - average 630.1
Retrievals per search - standard deviation 5787.8
Percent of searches completed with 0 results 25.8%
Percent of searches entered that are long 3.0%
Percent of long searches completed
(includes partial results) 76.8%
Commands entered, by type, excluding errors:
Total Percentage
__________ __________
FIND 4,308 32.1%
DISPLAY (excluding automatic displays) 5,517 41.2%
BROWSE 22 0.2%
SELECT 9 0.1%
HELP 129 1.0%
EXPLAIN 131 1.0%
SET/RESET 353 2.6%
SHOW 44 0.3%
ADD ON (AND, OR, AND NOT) 479 3.6%
LOGON or LOGOFF 1,681 12.5%
COMMENT 0 0.0%
SAVE 388 2.9%
USE 2 0.0%
OTHER 368 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 1,916 34.2% 368 19.2% 16 75.2 231.7
TITLE WORD 445 7.9% 155 34.8% 15 117.7 333.4
EXACT TITLE 41 0.7% 13 31.7% 1 22.2 64.7
JOURNAL 147 2.6% 48 32.7% 250 2048.1 5289.0
EXACT JOURNAL 43 0.8% 7 16.3% 204 917.5 2408.6
SUBJECT 334 6.0% 153 45.8% 258 4777.5 13477.3
EXACT SUBJECT 465 8.3% 345 74.2% 1 69.0 385.7
KEYWORD 1,091 19.5% 145 13.3% 44 1588.9 10631.5
FORM/PUB TYPE 9 0.2% 1 11.1% 58 191.8 287.1
DATE 737 13.1% 396 53.7% 4 66.0 310.1
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% 1 100% 0 0.0 0.0
CONFERENCE 0 0.0% 0 0.0% 0 0.0 0.0
LANGUAGE 14 0.2% 0 0.0% 260 553.1 789.7
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 12 0.2% 0 0.0% 1 1.0 0.0
PERIODICAL 61 1.1% 11 18.0% 3 49.5 154.9
EXACT PE 15 0.3% 0 0.0% 3 13.8 16.3
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 277 4.9% 166 59.9% 1 55.3 312.5
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 994 23.3% 473 47.6% 5 97.7 575.4
Single 3,278 76.7% 669 20.4% 32 1033.8 7494.3
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 22 100% 9 40.9% 1 6.6 9.7
EXACT SUBJECT 0 0.0% 0 0.0% 0 0.0 0.0
DISPLAY commands, by type, excluding automatic displays:
REVIEW 3.0%
SHORT 87.7%
LONG 0.9%
TAGS 1.1%
FIELDS 3.7%
BROWSE REVIEW 0.2%
BROWSE LONG 0.0%
PERIODICALS 2.0%
COMMENTS 0.0%
Other 1.3%
2.2 Error, EXPLAIN and HELP statistics
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Percent of commands that contained errors 10.6%
Ten most frequent errors:
1. NS command - no next screen 29.5%
2. DISPLAY command - no FIND results 22.3%
3. First word of command is invalid 21.8%
4. FIND command with invalid index name 5.9%
5. DISPLAY command contains invalid word 4.5%
6. PS command - no previous screen 3.7%
7. Add-on search, no index name after verb 1.8%
8. Valid command at an inappropriate time 1.1%
9. Search term missing from search command 0.9%
10. DISPLAY command-record numbers too large 0.8%
11. All others 7.8%
Ten most frequent EXPLAIN requests:
1. LOCATE (INS/PSY DBS) 25.2%
2. GUIDE 17.6%
3. COMMANDS (ABI/PSY DBS) 8.4%
4. FIND (PSY DB) 6.1%
5. DISPLAY (INS/PSY DBS) 5.3%
6. INDEXES (PSY DB) 5.3%
7. MAIL 3.8%
8. SEARCH (PSY DB) 3.8%
9. Unrecognized term 3.8%
10. ADDON SEARCH 3.8%
11. All others 16.8%
Ten most frequent HELP situations:
1. Help requested from SET DB command 26.5%
2. First word of command is invalid 10.8%
3. DISPLAY command - middle of >1 screen 10.0%
4. FIND command with invalid index name 6.9%
5. DISPLAY command-first of >1 screen 5.4%
6. PS command - no previous screen 5.0%
7. FIND command with zero results 3.8%
8. FIND command retrieves >1 book 3.8%
9. DISPLAY command-complete in one screen 3.8%
10. DISPLAY command - last of >1 screen 3.1%
11. All others 20.8%
Ten most frequent SHOW requests:
1. HISTORY 54.8%
2. SEARCH 33.3%
3. PSYCINFO NEWS 4.8%
4. MAIL SETTINGS 4.8%
5. SETTINGS (INS/PSY DBS) 2.4%
11. All others 0.0%
PSYmm/dd psy MELVYL PSYCINFO DATABASE TELNET STATISTICS (weekly)