MELVYL PSYCINFO DATABASE TELNET STATISTICS
Time period: 02/03/01 through 02/09/01
1.0 SUMMARY STATISTICS
_______________________
1.1 Total sessions:
____________________
Zero results may indicate no access to the database
Location Library Remote Total
________ _______ ______ _____
Berkeley 65 214 279
Davis 236 0 236
Irvine 94 0 94
Los Angeles 10 159 169
Riverside 27 32 59
San Diego 12 111 123
San Francisco 61 0 61
Santa Barbara 6 46 52
Santa Cruz 13 28 41
Lawrence Berkeley 0 0 0
Lawrence Livermore 0 0 0
Los Alamos 0 0 0
Other - UC 6 16 22
Other-Network UC n/a 192 192
_______ ______ _____
530 798 1,328
Per hour usage:
Time Sessions Finds Records Displayed
__________ __________ __________ _________________
12-2 a.m. 10 40 460
2-4 a.m. 14 30 281
4-6 a.m. 108 533 2,559
6-8 a.m. 29 156 1,594
8-10 a.m. 97 297 1,839
10-12 a.m. 207 791 7,122
12-2 p.m. 237 942 13,059
2-4 p.m. 275 1,083 10,652
4-6 p.m. 177 690 7,335
6-8 p.m. 80 467 3,787
8-10 p.m. 63 252 2,062
10-12 p.m. 31 104 838
__________ __________ __________ _________________
Total: 1,328 5,385 51,588
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 245 926 1,171
Davis 1,065 0 1,065
Irvine 313 0 313
Los Angeles 42 785 827
Riverside 74 147 221
San Diego 25 386 411
San Francisco 205 0 205
Santa Barbara 4 120 124
Santa Cruz 41 117 158
Lawrence Berkeley 0 0 0
Lawrence Livermore 0 0 0
Los Alamos 0 0 0
Other - UC 22 96 118
Other-Network UC n/a 772 772
_______ ______ _____
2,036 3,349 5,385
1.3 Records displayed
______________________
Zero results may indicate no access to the database
Number of Records Displayed by location:
Location Library Remote Total
________ _______ ______ _____
Berkeley 4,012 12,745 16,757
Davis 6,020 0 6,020
Irvine 3,015 0 3,015
Los Angeles 508 7,440 7,948
Riverside 489 1,768 2,257
San Diego 166 2,603 2,769
San Francisco 2,253 0 2,253
Santa Barbara 10 1,266 1,276
Santa Cruz 463 1,255 1,718
Lawrence Berkeley 0 0 0
Lawrence Livermore 0 0 0
Los Alamos 0 0 0
Other - UC 88 476 564
Other-Network UC n/a 7,011 7,011
_______ ______ _____
17,024 34,564 51,588
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 2.2
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) 6:48
Average session length (minutes:seconds) 12:11
Longest session recorded (minutes:seconds) 428:26
Average number of searches completed per session 4.0
Retrievals per search - median 6.0
Retrievals per search - average 634.0
Retrievals per search - standard deviation 6817.1
Percent of searches completed with 0 results 26.6%
Percent of searches entered that are long 2.7%
Percent of long searches completed
(includes partial results) 69.4%
Commands entered, by type, excluding errors:
Total Percentage
__________ __________
FIND 4,854 31.3%
DISPLAY (excluding automatic displays) 6,305 40.7%
BROWSE 10 0.1%
SELECT 3 0.0%
HELP 190 1.2%
EXPLAIN 199 1.3%
SET/RESET 486 3.1%
SHOW 43 0.3%
ADD ON (AND, OR, AND NOT) 529 3.4%
LOGON or LOGOFF 1,974 12.7%
COMMENT 0 0.0%
SAVE 449 2.9%
USE 1 0.0%
OTHER 461 3.0%
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 2,171 35.8% 425 19.6% 15 65.0 189.2
TITLE WORD 526 8.7% 173 32.9% 7 107.0 525.7
EXACT TITLE 64 1.1% 33 51.6% 2 10.1 28.6
JOURNAL 121 2.0% 24 19.8% 483 2750.3 6103.0
EXACT JOURNAL 98 1.6% 24 24.5% 445 2096.0 3536.0
SUBJECT 410 6.8% 231 56.3% 274 4822.8 16105.8
EXACT SUBJECT 440 7.3% 316 71.8% 5 141.3 591.9
KEYWORD 1,070 17.6% 185 17.3% 46 2078.2 14653.0
FORM/PUB TYPE 24 0.4% 8 33.3% 7 275.1 663.2
DATE 662 10.9% 352 53.2% 4 16.2 41.6
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. 2 0.0% 1 50.0% 1 1.0 0.0
CONFERENCE 0 0.0% 0 0.0% 0 0.0 0.0
LANGUAGE 3 0.0% 1 33.3% 81 81.0 104.7
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 90 1.5% 0 0.0% 1 1.0 0.0
PERIODICAL 105 1.7% 22 20.9% 6 51.0 164.9
EXACT PE 17 0.3% 3 17.6% 3 31.6 75.2
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 260 4.3% 162 62.3% 5 241.1 946.5
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 971 20.2% 459 47.3% 5 36.7 202.3
Single 3,839 79.8% 860 22.4% 29 1105.0 9091.5
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 9 90.0% 2 22.2% 1 10.6 21.1
EXACT SUBJECT 1 10.0% 0 0.0% 1 1.0 0.0
DISPLAY commands, by type, excluding automatic displays:
REVIEW 1.6%
SHORT 88.4%
LONG 0.7%
TAGS 1.6%
FIELDS 2.5%
BROWSE REVIEW 0.1%
BROWSE LONG 0.1%
PERIODICALS 2.5%
COMMENTS 0.0%
Other 2.5%
2.2 Error, EXPLAIN and HELP statistics
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Percent of commands that contained errors 10.4%
Ten most frequent errors:
1. NS command - no next screen 25.6%
2. First word of command is invalid 24.9%
3. DISPLAY command - no FIND results 18.9%
4. FIND command with invalid index name 8.0%
5. PS command - no previous screen 3.5%
6. DISPLAY command contains invalid word 3.0%
7. Valid command at an inappropriate time 1.8%
8. Search term missing from search command 1.7%
9. DISPLAY command-record numbers too large 1.3%
10. Add-on search, no index name after verb 1.3%
11. All others 9.9%
Ten most frequent EXPLAIN requests:
1. LOCATE (INS/PSY DBS) 31.7%
2. GUIDE 19.1%
3. FIND (PSY DB) 11.1%
4. COMMANDS (ABI/PSY DBS) 10.1%
5. Unrecognized term 3.0%
6. DISPLAY (INS/PSY DBS) 2.5%
7. MAIL 2.0%
8. ADDON SEARCH 2.0%
9. FIND LOCATION 1.5%
10. LOCATIONS 1.5%
11. All others 15.6%
Ten most frequent HELP situations:
1. Help requested from SET DB command 18.5%
2. First word of command is invalid 10.8%
3. DISPLAY command-first of >1 screen 9.5%
4. FIND command with invalid index name 8.7%
5. DISPLAY command - middle of >1 screen 6.2%
6. FIND command with zero results 5.4%
7. DISPLAY command-complete in one screen 5.4%
8. NS command - no next screen 5.1%
9. FIND command retrieves >1 book 5.1%
10. DISPLAY command - last of >1 screen 3.3%
11. All others 21.9%
Ten most frequent SHOW requests:
1. HISTORY 39.0%
2. SEARCH 29.3%
3. MAIL STATUS 22.0%
4. PSYCINFO NEWS 2.4%
5. MAIL SETTINGS 2.4%
6. DISPLAY (MED/INS/PSY DBS) 2.4%
7. 2292 2.4%
11. All others 0.0%
PSYmm/dd psy MELVYL PSYCINFO DATABASE TELNET STATISTICS (weekly)