MELVYL PSYCINFO DATABASE TELNET STATISTICS
Time period: 05/12/01 through 05/18/01
1.0 SUMMARY STATISTICS
_______________________
1.1 Total sessions:
____________________
Zero results may indicate no access to the database
Location Library Remote Total
________ _______ ______ _____
Berkeley 26 165 191
Davis 146 2 148
Irvine 77 0 77
Los Angeles 0 178 178
Riverside 16 48 64
San Diego 15 114 129
San Francisco 47 0 47
Santa Barbara 15 32 47
Santa Cruz 12 21 33
Lawrence Berkeley 0 0 0
Lawrence Livermore 0 0 0
Los Alamos 0 0 0
Other - UC 11 50 61
Other-Network UC n/a 169 169
_______ ______ _____
365 779 1,144
Per hour usage:
Time Sessions Finds Records Displayed
__________ __________ __________ _________________
12-2 a.m. 11 66 1,079
2-4 a.m. 22 275 599
4-6 a.m. 15 227 629
6-8 a.m. 21 45 634
8-10 a.m. 111 362 2,445
10-12 a.m. 171 560 4,616
12-2 p.m. 185 730 7,843
2-4 p.m. 226 732 6,107
4-6 p.m. 150 497 5,058
6-8 p.m. 89 384 4,164
8-10 p.m. 97 298 1,838
10-12 p.m. 46 178 1,182
__________ __________ __________ _________________
Total: 1,144 4,354 36,194
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 140 558 698
Davis 914 5 919
Irvine 347 0 347
Los Angeles 0 715 715
Riverside 30 202 232
San Diego 56 303 359
San Francisco 154 0 154
Santa Barbara 61 100 161
Santa Cruz 32 68 100
Lawrence Berkeley 0 0 0
Lawrence Livermore 0 0 0
Los Alamos 0 0 0
Other - UC 41 141 182
Other-Network UC n/a 487 487
_______ ______ _____
1,775 2,579 4,354
1.3 Records displayed
______________________
Zero results may indicate no access to the database
Number of Records Displayed by location:
Location Library Remote Total
________ _______ ______ _____
Berkeley 1,169 4,864 6,033
Davis 4,371 34 4,405
Irvine 4,560 0 4,560
Los Angeles 0 5,956 5,956
Riverside 139 1,502 1,641
San Diego 128 3,775 3,903
San Francisco 1,591 0 1,591
Santa Barbara 738 1,058 1,796
Santa Cruz 224 625 849
Lawrence Berkeley 0 0 0
Lawrence Livermore 0 0 0
Los Alamos 0 0 0
Other - UC 724 1,069 1,793
Other-Network UC n/a 3,667 3,667
_______ ______ _____
13,644 22,550 36,194
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 1.2
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) 7:03
Average session length (minutes:seconds) 12:37
Longest session recorded (minutes:seconds) 753:38
Average number of searches completed per session 3.8
Retrievals per search - median 5.0
Retrievals per search - average 588.9
Retrievals per search - standard deviation 6131.4
Percent of searches completed with 0 results 25.7%
Percent of searches entered that are long 3.1%
Percent of long searches completed
(includes partial results) 67.4%
Commands entered, by type, excluding errors:
Total Percentage
__________ __________
FIND 3,973 32.1%
DISPLAY (excluding automatic displays) 4,578 36.9%
BROWSE 11 0.1%
SELECT 6 0.0%
HELP 127 1.0%
EXPLAIN 156 1.3%
SET/RESET 349 2.8%
SHOW 30 0.2%
ADD ON (AND, OR, AND NOT) 381 3.1%
LOGON or LOGOFF 1,706 13.8%
COMMENT 0 0.0%
SAVE 709 5.7%
USE 1 0.0%
OTHER 384 3.1%
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 1,902 36.1% 348 18.3% 11 63.1 211.7
TITLE WORD 477 9.1% 145 30.4% 3 59.3 204.2
EXACT TITLE 38 0.7% 15 39.5% 1 25.7 64.6
JOURNAL 81 1.5% 31 38.3% 230 2223.2 3927.4
EXACT JOURNAL 68 1.3% 18 26.5% 255 1124.0 1825.9
SUBJECT 201 3.8% 95 47.3% 783 7445.8 17121.3
EXACT SUBJECT 457 8.7% 325 71.1% 2 6.6 11.4
KEYWORD 896 17.0% 114 12.7% 46 1814.3 12527.8
FORM/PUB TYPE 6 0.1% 1 16.7% 20 361.0 761.6
DATE 747 14.2% 381 51.0% 4 22.8 99.8
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 2 0.0% 1 50.0% 87 87.0 0.0
LANGUAGE 4 0.1% 0 0.0% 180 318.3 389.9
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 14 0.3% 0 0.0% 1 1.0 0.0
PERIODICAL 83 1.6% 12 14.5% 4 71.6 240.7
EXACT PE 7 0.1% 1 14.3% 5 43.0 95.1
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 283 5.4% 156 55.1% 2 18.8 112.9
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 1,043 26.5% 446 42.8% 3 25.4 114.3
Single 2,887 73.5% 587 20.3% 26 1079.4 8353.9
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 10 90.9% 3 30.0% 2 4.9 3.9
EXACT SUBJECT 1 9.1% 0 0.0% 1 1.0 0.0
DISPLAY commands, by type, excluding automatic displays:
REVIEW 2.1%
SHORT 87.4%
LONG 0.8%
TAGS 1.3%
FIELDS 4.2%
BROWSE REVIEW 0.1%
BROWSE LONG 0.1%
PERIODICALS 2.1%
COMMENTS 0.0%
Other 1.9%
2.2 Error, EXPLAIN and HELP statistics
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Percent of commands that contained errors 10.5%
Ten most frequent errors:
1. NS command - no next screen 26.5%
2. DISPLAY command - no FIND results 23.6%
3. First word of command is invalid 22.5%
4. FIND command with invalid index name 6.8%
5. PS command - no previous screen 3.2%
6. DISPLAY command contains invalid word 3.0%
7. Search term missing from search command 2.3%
8. Valid command at an inappropriate time 1.8%
9. Add-on search, no index name after verb 1.0%
10. Command contains escape or arrow key 1.0%
11. All others 8.3%
Ten most frequent EXPLAIN requests:
1. LOCATE (INS/PSY DBS) 31.4%
2. GUIDE 17.3%
3. INDEXES (PSY DB) 5.8%
4. FIND (PSY DB) 5.8%
5. Unrecognized term 5.8%
6. COMMANDS (ABI/PSY DBS) 3.8%
7. DISPLAY (INS/PSY DBS) 3.2%
8. FIND LOCATION 2.6%
9. LOCATE (PE DB) 2.6%
10. LOCATIONS 1.9%
11. All others 19.9%
Ten most frequent HELP situations:
1. Help requested from SET DB command 21.6%
2. DISPLAY command-first of >1 screen 14.5%
3. First word of command is invalid 14.1%
4. FIND command with invalid index name 9.5%
5. FIND command with zero results 4.9%
6. DISPLAY command - middle of >1 screen 4.9%
7. NS command - no next screen 4.2%
8. FIND command retrieves >1 book 3.2%
9. DISPLAY command-complete in one screen 2.8%
10. BROWSE command with invalid index name 2.1%
11. All others 18.0%
Ten most frequent SHOW requests:
1. SEARCH 43.3%
2. HISTORY 40.0%
3. GLOSSARY 10.0%
4. PSYCINFO NEWS 3.3%
5. PSYCINFO STATISTICS 3.3%
11. All others 0.0%
PSYmm/dd psy MELVYL PSYCINFO DATABASE TELNET STATISTICS (weekly)