MELVYL PSYCINFO DATABASE TELNET STATISTICS
Time period: 03/02/02 through 03/08/02
1.0 SUMMARY STATISTICS
_______________________
1.1 Total sessions:
____________________
Zero results may indicate no access to the database
Location Library Remote Total
________ _______ ______ _____
Berkeley 14 141 155
Davis 112 2 114
Irvine 52 0 52
Los Angeles 5 89 94
Riverside 3 30 33
San Diego 23 83 106
San Francisco 26 0 26
Santa Barbara 4 62 66
Santa Cruz 2 36 38
Lawrence Berkeley 0 0 0
Lawrence Livermore 0 0 0
Los Alamos 0 0 0
Other - UC 4 20 24
Other-Network UC n/a 107 107
_______ ______ _____
245 570 815
Per hour usage:
Time Sessions Finds Records Displayed
__________ __________ __________ _________________
12-2 a.m. 14 37 116
2-4 a.m. 19 285 1,141
4-6 a.m. 3 12 50
6-8 a.m. 12 37 398
8-10 a.m. 85 263 1,538
10-12 a.m. 138 437 3,493
12-2 p.m. 140 475 4,469
2-4 p.m. 192 602 5,708
4-6 p.m. 111 464 4,968
6-8 p.m. 43 168 2,019
8-10 p.m. 35 152 1,258
10-12 p.m. 23 85 888
__________ __________ __________ _________________
Total: 815 3,017 26,046
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 45 516 561
Davis 626 12 638
Irvine 141 0 141
Los Angeles 11 309 320
Riverside 6 129 135
San Diego 31 204 235
San Francisco 147 0 147
Santa Barbara 4 253 257
Santa Cruz 4 187 191
Lawrence Berkeley 0 0 0
Lawrence Livermore 0 0 0
Los Alamos 0 0 0
Other - UC 0 62 62
Other-Network UC n/a 330 330
_______ ______ _____
1,015 2,002 3,017
1.3 Records displayed
______________________
Zero results may indicate no access to the database
Number of Records Displayed by location:
Location Library Remote Total
________ _______ ______ _____
Berkeley 103 5,719 5,822
Davis 3,925 97 4,022
Irvine 1,057 0 1,057
Los Angeles 93 3,205 3,298
Riverside 102 988 1,090
San Diego 77 1,821 1,898
San Francisco 1,315 0 1,315
Santa Barbara 16 2,434 2,450
Santa Cruz 15 1,397 1,412
Lawrence Berkeley 0 0 0
Lawrence Livermore 0 0 0
Los Alamos 0 0 0
Other - UC 0 317 317
Other-Network UC n/a 3,365 3,365
_______ ______ _____
6,703 19,343 26,046
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) 7:42
Average session length (minutes:seconds) 11:58
Longest session recorded (minutes:seconds) 166:55
Average number of searches completed per session 3.7
Retrievals per search - median 7.0
Retrievals per search - average 1042.5
Retrievals per search - standard deviation 25885
Percent of searches completed with 0 results 25.8%
Percent of searches entered that are long 2.5%
Percent of long searches completed
(includes partial results) 65.3%
Commands entered, by type, excluding errors:
Total Percentage
__________ __________
FIND 2,695 29.4%
DISPLAY (excluding automatic displays) 3,894 42.5%
BROWSE 10 0.1%
SELECT 6 0.1%
HELP 82 0.9%
EXPLAIN 77 0.8%
SET/RESET 251 2.7%
SHOW 39 0.4%
ADD ON (AND, OR, AND NOT) 321 3.5%
LOGON or LOGOFF 1,232 13.4%
COMMENT 0 0.0%
SAVE 283 3.1%
USE 1 0.0%
OTHER 294 3.2%
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 1,111 32.7% 208 18.7% 15 130.2 2262.6
TITLE WORD 411 12.1% 126 30.7% 9 161.7 1472.5
EXACT TITLE 16 0.5% 10 62.5% 4 20.7 42.8
JOURNAL 75 2.2% 18 24.0% 229 1603.1 3419.5
EXACT JOURNAL 93 2.7% 20 21.5% 2,134 4541.9 26192.9
SUBJECT 183 5.4% 67 36.6% 102 3034.8 10384.1
EXACT SUBJECT 256 7.5% 214 83.6% 15 105.9 305.4
KEYWORD 670 19.7% 99 14.8% 41 3810.1 58191.7
FORM/PUB TYPE 18 0.5% 1 5.6% 125 796.8 2410.1
DATE 356 10.5% 222 62.4% 6 27.5 91.8
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. 0 0.0% 0 0.0% 0 0.0 0.0
CONFERENCE 0 0.0% 0 0.0% 0 0.0 0.0
LANGUAGE 2 0.1% 1 50.0% 2 2.0 0.0
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 7 0.2% 0 0.0% 1 1.0 0.0
PERIODICAL 40 1.2% 10 25.0% 3 15.8 33.4
EXACT PE 6 0.2% 0 0.0% 2 2.3 1.8
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 157 4.6% 119 75.8% 26 58.9 99.9
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 571 21.4% 278 48.7% 7 328.5 4010.2
Single 2,101 78.6% 433 20.6% 25 1765.8 34588.6
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 10 100% 5 50.0% 1 2.4 1.9
EXACT SUBJECT 0 0.0% 0 0.0% 0 0.0 0.0
DISPLAY commands, by type, excluding automatic displays:
REVIEW 1.9%
SHORT 88.5%
LONG 1.1%
TAGS 0.5%
FIELDS 4.3%
BROWSE REVIEW 0.1%
BROWSE LONG 0.0%
PERIODICALS 1.5%
COMMENTS 0.0%
Other 2.1%
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 28.2%
2. First word of command is invalid 22.7%
3. DISPLAY command - no FIND results 22.5%
4. FIND command with invalid index name 7.8%
5. DISPLAY command contains invalid word 3.4%
6. Search term missing from search command 2.4%
7. PS command - no previous screen 1.9%
8. Valid command at an inappropriate time 1.6%
9. DISPLAY command-record numbers too large 1.4%
10. Command contains escape or arrow key 0.7%
11. All others 7.7%
Ten most frequent EXPLAIN requests:
1. GUIDE 32.5%
2. LOCATE (INS/PSY DBS) 15.6%
3. Unrecognized term 10.4%
4. FIND (PSY DB) 9.1%
5. COMMANDS (ABI/PSY DBS) 5.2%
6. MAGS TEXT 3.9%
7. INDEXES (PSY DB) 3.9%
8. DATABASES 3.9%
9. FIND LOCATION 2.6%
10. DISPLAY (INS/PSY DBS) 2.6%
11. All others 10.4%
Ten most frequent HELP situations:
1. Help requested from SET DB command 24.5%
2. First word of command is invalid 17.6%
3. FIND command with invalid index name 10.1%
4. DISPLAY command - middle of >1 screen 8.2%
5. DISPLAY command-first of >1 screen 6.3%
6. FIND command with zero results 5.7%
7. FIND command retrieves >1 book 5.0%
8. NS command - no next screen 3.1%
9. DISPLAY command - last of >1 screen 3.1%
10. DISPLAY command-complete in one screen 1.9%
11. All others 14.5%
Ten most frequent SHOW requests:
1. HISTORY 58.3%
2. SETTINGS (INS/PSY DBS) 8.3%
3. SEARCH 8.3%
4. LOCATION 4.2%
5. PUBLICATION TYPES (PSY DB) 4.2%
6. PSYCINFO NEWS 4.2%
7. LIBRARY SETTINGS 4.2%
8. LOCAL INFORMATION 4.2%
9. MAIL STATUS 4.2%
11. All others 0.0%
PSYmm/dd psy MELVYL PSYCINFO DATABASE TELNET STATISTICS (weekly)