MELVYL PSYCINFO DATABASE TELNET STATISTICS
Time period: 01/01/02 through 01/31/02
1.0 SUMMARY STATISTICS
_______________________
1.1 Total sessions:
____________________
Zero results may indicate no access to the database
Location Library Remote Total
________ _______ ______ _____
Berkeley 31 523 554
Davis 391 1 392
Irvine 163 0 163
Los Angeles 13 421 434
Riverside 14 107 121
San Diego 49 340 389
San Francisco 98 0 98
Santa Barbara 11 103 114
Santa Cruz 1 124 125
Lawrence Berkeley 0 0 0
Lawrence Livermore 0 0 0
Los Alamos 0 0 0
Other - UC 4 78 82
Other-Network UC n/a 623 623
_______ ______ _____
775 2,320 3,095
Per hour usage:
Time Sessions Finds Records Displayed
__________ __________ __________ _________________
12-2 a.m. 39 140 834
2-4 a.m. 64 1,036 2,601
4-6 a.m. 26 78 864
6-8 a.m. 73 208 2,730
8-10 a.m. 345 1,190 8,817
10-12 a.m. 649 2,162 18,769
12-2 p.m. 566 2,235 21,190
2-4 p.m. 616 2,494 20,810
4-6 p.m. 352 1,336 13,307
6-8 p.m. 171 741 7,296
8-10 p.m. 125 659 6,231
10-12 p.m. 69 375 3,831
__________ __________ __________ _________________
Total: 3,095 12,654 107,280
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 112 2,116 2,228
Davis 2,173 1 2,174
Irvine 659 0 659
Los Angeles 28 1,700 1,728
Riverside 141 405 546
San Diego 150 1,217 1,367
San Francisco 597 0 597
Santa Barbara 17 500 517
Santa Cruz 1 343 344
Lawrence Berkeley 0 0 0
Lawrence Livermore 0 0 0
Los Alamos 0 0 0
Other - UC 11 350 361
Other-Network UC n/a 2,133 2,133
_______ ______ _____
3,889 8,765 12,654
1.3 Records displayed
______________________
Zero results may indicate no access to the database
Number of Records Displayed by location:
Location Library Remote Total
________ _______ ______ _____
Berkeley 1,077 22,501 23,578
Davis 11,954 11 11,965
Irvine 6,929 0 6,929
Los Angeles 302 17,067 17,369
Riverside 1,709 4,206 5,915
San Diego 729 8,961 9,690
San Francisco 3,704 0 3,704
Santa Barbara 72 4,565 4,637
Santa Cruz 1 3,872 3,873
Lawrence Berkeley 0 0 0
Lawrence Livermore 0 0 0
Los Alamos 0 0 0
Other - UC 33 2,587 2,620
Other-Network UC n/a 17,000 17,000
_______ ______ _____
26,510 80,770 107,280
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 1.2
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) 8:04
Average session length (minutes:seconds) 13:10
Longest session recorded (minutes:seconds) 488:08
Average number of searches completed per session 4.0
Retrievals per search - median 6.5
Retrievals per search - average 576.1
Retrievals per search - standard deviation 5507.8
Percent of searches completed with 0 results 25.0%
Percent of searches entered that are long 3.5%
Percent of long searches completed
(includes partial results) 73.6%
Commands entered, by type, excluding errors:
Total Percentage
__________ __________
FIND 11,264 30.2%
DISPLAY (excluding automatic displays) 14,809 39.7%
BROWSE 36 0.1%
SELECT 5 0.0%
HELP 257 0.7%
EXPLAIN 218 0.6%
SET/RESET 838 2.2%
SHOW 127 0.3%
ADD ON (AND, OR, AND NOT) 1,388 3.7%
LOGON or LOGOFF 4,831 13.0%
COMMENT 0 0.0%
SAVE 2,328 6.2%
USE 1 0.0%
OTHER 1,230 3.3%
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 5,445 37.4% 1,099 20.2% 12 53.6 187.4
TITLE WORD 1,246 8.6% 372 29.9% 8 110.4 714.2
EXACT TITLE 113 0.8% 39 34.5% 1 23.4 72.6
JOURNAL 272 1.9% 89 32.7% 824 2903.2 5406.6
EXACT JOURNAL 169 1.2% 49 29.0% 384 1451.6 2705.0
SUBJECT 461 3.2% 192 41.6% 955 5841.7 15042.7
EXACT SUBJECT 1,108 7.6% 837 75.5% 2 210.1 1762.7
KEYWORD 2,692 18.5% 399 14.8% 40 1775.8 11202.3
FORM/PUB TYPE 140 1.0% 8 5.7% 24 138.7 449.6
DATE 2,016 13.8% 988 49.0% 5 39.8 207.9
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. 8 0.1% 1 12.5% 15 116.3 247.3
CONFERENCE 0 0.0% 0 0.0% 0 0.0 0.0
LANGUAGE 17 0.1% 0 0.0% 133 1855.9 4112.9
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 20 0.1% 0 0.0% 1 1.0 0.0
PERIODICAL 166 1.1% 31 18.7% 5 48.9 234.7
EXACT PE 37 0.3% 4 10.8% 2 11.8 28.0
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 652 4.5% 403 61.8% 2 170.8 2362.2
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 2,619 23.5% 1,147 43.8% 5 115.0 1243.5
Single 8,526 76.5% 1,777 20.8% 24 966.6 7354.9
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 32 88.9% 5 15.6% 3 7.8 10.3
EXACT SUBJECT 4 11.1% 2 50.0% 2 2.0 0.0
DISPLAY commands, by type, excluding automatic displays:
REVIEW 1.6%
SHORT 89.3%
LONG 0.9%
TAGS 0.7%
FIELDS 3.7%
BROWSE REVIEW 0.2%
BROWSE LONG 0.1%
PERIODICALS 1.8%
COMMENTS 0.0%
Other 1.7%
2.2 Error, EXPLAIN and HELP statistics
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Percent of commands that contained errors 9.5%
Ten most frequent errors:
1. NS command - no next screen 28.4%
2. DISPLAY command - no FIND results 22.9%
3. First word of command is invalid 20.0%
4. FIND command with invalid index name 6.2%
5. DISPLAY command contains invalid word 3.3%
6. PS command - no previous screen 2.4%
7. 1281 2.1%
8. Valid command at an inappropriate time 2.0%
9. Search term missing from search command 1.8%
10. DISPLAY command-record numbers too large 1.0%
11. All others 9.8%
Ten most frequent EXPLAIN requests:
1. GUIDE 21.6%
2. LOCATE (INS/PSY DBS) 18.8%
3. FIND (PSY DB) 10.1%
4. INDEXES (PSY DB) 6.0%
5. COMMANDS (ABI/PSY DBS) 5.0%
6. DATABASES 5.0%
7. Unrecognized term 3.2%
8. DISPLAY (INS/PSY DBS) 2.8%
9. SEARCH (PSY DB) 2.8%
10. PUBLICATION TYPE (PSY DB) 2.8%
11. All others 22.0%
Ten most frequent HELP situations:
1. Help requested from SET DB command 21.1%
2. First word of command is invalid 16.8%
3. FIND command with zero results 8.4%
4. DISPLAY command-first of >1 screen 7.2%
5. FIND command with invalid index name 6.3%
6. 1281 6.1%
7. DISPLAY command - middle of >1 screen 5.3%
8. NS command - no next screen 3.2%
9. DISPLAY command - last of >1 screen 2.9%
10. PS command - no previous screen 1.9%
11. All others 20.8%
Ten most frequent SHOW requests:
1. HISTORY 72.5%
2. SEARCH 15.7%
3. SETTINGS (INS/PSY DBS) 3.9%
4. MAIL STATUS 3.9%
5. PUBLICATION TYPES (PSY DB) 1.0%
6. PSYCINFO NEWS 1.0%
7. MAIL SETTINGS 1.0%
8. DISPLAY (MED/INS/PSY DBS) 1.0%
11. All others 0.0%
PSYmm/dd psy MELVYL PSYCINFO DATABASE TELNET STATISTICS (weekly)