MELVYL PSYCINFO DATABASE TELNET STATISTICS
Time period: 11/17/01 through 11/23/01
1.0 SUMMARY STATISTICS
_______________________
1.1 Total sessions:
____________________
Zero results may indicate no access to the database
Location Library Remote Total
________ _______ ______ _____
Berkeley 22 100 122
Davis 106 2 108
Irvine 97 0 97
Los Angeles 0 78 78
Riverside 13 7 20
San Diego 8 42 50
San Francisco 22 0 22
Santa Barbara 4 22 26
Santa Cruz 3 13 16
Lawrence Berkeley 0 0 0
Lawrence Livermore 0 0 0
Los Alamos 0 0 0
Other - UC 0 15 15
Other-Network UC n/a 106 106
_______ ______ _____
275 385 660
Per hour usage:
Time Sessions Finds Records Displayed
__________ __________ __________ _________________
12-2 a.m. 8 33 196
2-4 a.m. 16 263 745
4-6 a.m. 8 40 544
6-8 a.m. 15 46 259
8-10 a.m. 63 159 1,328
10-12 a.m. 133 443 3,098
12-2 p.m. 112 412 4,164
2-4 p.m. 134 431 4,433
4-6 p.m. 82 369 3,246
6-8 p.m. 33 157 956
8-10 p.m. 39 135 1,479
10-12 p.m. 17 44 547
__________ __________ __________ _________________
Total: 660 2,532 20,995
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 47 384 431
Davis 638 3 641
Irvine 331 0 331
Los Angeles 0 238 238
Riverside 49 24 73
San Diego 26 153 179
San Francisco 74 0 74
Santa Barbara 5 76 81
Santa Cruz 3 29 32
Lawrence Berkeley 0 0 0
Lawrence Livermore 0 0 0
Los Alamos 0 0 0
Other - UC 0 82 82
Other-Network UC n/a 370 370
_______ ______ _____
1,173 1,359 2,532
1.3 Records displayed
______________________
Zero results may indicate no access to the database
Number of Records Displayed by location:
Location Library Remote Total
________ _______ ______ _____
Berkeley 659 3,371 4,030
Davis 3,651 7 3,658
Irvine 2,386 0 2,386
Los Angeles 0 2,160 2,160
Riverside 608 102 710
San Diego 80 944 1,024
San Francisco 775 0 775
Santa Barbara 13 1,265 1,278
Santa Cruz 27 1,080 1,107
Lawrence Berkeley 0 0 0
Lawrence Livermore 0 0 0
Los Alamos 0 0 0
Other - UC 0 500 500
Other-Network UC n/a 3,367 3,367
_______ ______ _____
8,199 12,796 20,995
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 1.6
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) 9:00
Average session length (minutes:seconds) 15:03
Longest session recorded (minutes:seconds) 646:42
Average number of searches completed per session 3.8
Retrievals per search - median 6.0
Retrievals per search - average 453.9
Retrievals per search - standard deviation 2908.8
Percent of searches completed with 0 results 28.8%
Percent of searches entered that are long 2.3%
Percent of long searches completed
(includes partial results) 61.0%
Commands entered, by type, excluding errors:
Total Percentage
__________ __________
FIND 2,367 32.5%
DISPLAY (excluding automatic displays) 3,010 41.3%
BROWSE 8 0.1%
SELECT 5 0.1%
HELP 105 1.4%
EXPLAIN 97 1.3%
SET/RESET 213 2.9%
SHOW 32 0.4%
ADD ON (AND, OR, AND NOT) 162 2.2%
LOGON or LOGOFF 956 13.1%
COMMENT 0 0.0%
SAVE 153 2.1%
USE 0 0.0%
OTHER 190 2.6%
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 871 28.8% 182 20.9% 16 91.4 336.0
TITLE WORD 245 8.1% 86 35.1% 4 50.6 126.3
EXACT TITLE 35 1.2% 19 54.3% 2 31.9 91.8
JOURNAL 39 1.3% 12 30.8% 66 609.7 1011.2
EXACT JOURNAL 34 1.1% 5 14.7% 987 2083.2 2638.0
SUBJECT 140 4.6% 79 56.4% 1,297 4827.7 8174.5
EXACT SUBJECT 266 8.8% 194 72.9% 3 3532.7 9736.1
KEYWORD 797 26.4% 132 16.6% 28 580.6 3352.2
FORM/PUB TYPE 15 0.5% 1 6.7% 20 27.1 35.7
DATE 370 12.3% 211 57.0% 4 30.1 128.0
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% 0 0.0% 3,354 3354.0 0.0
CONFERENCE 0 0.0% 0 0.0% 0 0.0 0.0
LANGUAGE 1 0.0% 0 0.0% 16 16.0 0.0
ISSN 0 0.0% 0 0.0% 0 0.0 0.0
ISBN 1 0.0% 0 0.0% 1 1.0 0.0
ID NUMBER 1 0.0% 0 0.0% 1 1.0 0.0
PERIODICAL 45 1.5% 6 13.3% 4 46.8 176.6
EXACT PE 3 0.1% 0 0.0% 1 26.3 43.9
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 155 5.1% 91 58.7% 3 91.3 312.9
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 516 22.0% 249 48.3% 5 39.3 152.2
Single 1,830 78.0% 425 23.2% 29 767.2 3809.1
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 7 87.5% 0 0.0% 1 3.7 5.6
EXACT SUBJECT 1 12.5% 0 0.0% 1 1.0 0.0
DISPLAY commands, by type, excluding automatic displays:
REVIEW 2.5%
SHORT 89.6%
LONG 0.5%
TAGS 1.0%
FIELDS 2.8%
BROWSE REVIEW 0.2%
BROWSE LONG 0.1%
PERIODICALS 2.1%
COMMENTS 0.0%
Other 1.1%
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 24.9%
2. First word of command is invalid 21.8%
3. DISPLAY command - no FIND results 21.6%
4. FIND command with invalid index name 7.6%
5. PS command - no previous screen 3.8%
6. DISPLAY command contains invalid word 2.4%
7. Search term missing from search command 2.2%
8. NS of SHOW/EXP command-no next screen 2.0%
9. DISPLAY command-record numbers too large 1.6%
10. Command contains escape or arrow key 1.6%
11. All others 10.6%
Ten most frequent EXPLAIN requests:
1. GUIDE 27.8%
2. LOCATE (INS/PSY DBS) 18.6%
3. FIND (PSY DB) 9.3%
4. ADDON SEARCH 7.2%
5. DISPLAY (INS/PSY DBS) 6.2%
6. MAIL 4.1%
7. INDEXES (PSY DB) 4.1%
8. MAGS TEXT 3.1%
9. COMMANDS (ABI/PSY DBS) 3.1%
10. Unrecognized term 3.1%
11. All others 13.4%
Ten most frequent HELP situations:
1. Help requested from SET DB command 20.8%
2. First word of command is invalid 17.3%
3. FIND command with invalid index name 8.4%
4. FIND command with zero results 8.4%
5. FIND command retrieves >1 book 7.9%
6. DISPLAY command-first of >1 screen 5.9%
7. DISPLAY command - middle of >1 screen 5.4%
8. DISPLAY command-complete in one screen 3.0%
9. DISPLAY command - last of >1 screen 2.0%
10. PS command - no previous screen 1.5%
11. All others 19.3%
Ten most frequent SHOW requests:
1. HISTORY 46.7%
2. SEARCH 43.3%
3. MAIL STATUS 6.7%
4. PSYCINFO NEWS 3.3%
11. All others 0.0%
PSYmm/dd psy MELVYL PSYCINFO DATABASE TELNET STATISTICS (weekly)