MELVYL PSYCINFO DATABASE TELNET STATISTICS
Time period: 07/28/01 through 08/03/01
1.0 SUMMARY STATISTICS
_______________________
1.1 Total sessions:
____________________
Zero results may indicate no access to the database
Location Library Remote Total
________ _______ ______ _____
Berkeley 44 150 194
Davis 128 1 129
Irvine 61 0 61
Los Angeles 10 116 126
Riverside 4 18 22
San Diego 4 76 80
San Francisco 49 0 49
Santa Barbara 1 16 17
Santa Cruz 25 15 40
Lawrence Berkeley 0 0 0
Lawrence Livermore 0 0 0
Los Alamos 0 0 0
Other - UC 0 36 36
Other-Network UC n/a 114 114
_______ ______ _____
326 542 868
Per hour usage:
Time Sessions Finds Records Displayed
__________ __________ __________ _________________
12-2 a.m. 11 44 712
2-4 a.m. 20 259 890
4-6 a.m. 19 263 770
6-8 a.m. 9 25 114
8-10 a.m. 80 282 2,394
10-12 a.m. 169 574 5,234
12-2 p.m. 161 487 5,401
2-4 p.m. 167 649 6,925
4-6 p.m. 124 479 4,760
6-8 p.m. 50 168 1,920
8-10 p.m. 27 112 1,203
10-12 p.m. 31 117 1,541
__________ __________ __________ _________________
Total: 868 3,459 31,864
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 132 422 554
Davis 846 3 849
Irvine 171 0 171
Los Angeles 39 515 554
Riverside 5 112 117
San Diego 22 308 330
San Francisco 152 0 152
Santa Barbara 2 50 52
Santa Cruz 89 67 156
Lawrence Berkeley 0 0 0
Lawrence Livermore 0 0 0
Los Alamos 0 0 0
Other - UC 0 83 83
Other-Network UC n/a 441 441
_______ ______ _____
1,458 2,001 3,459
1.3 Records displayed
______________________
Zero results may indicate no access to the database
Number of Records Displayed by location:
Location Library Remote Total
________ _______ ______ _____
Berkeley 1,127 5,146 6,273
Davis 5,150 22 5,172
Irvine 2,184 0 2,184
Los Angeles 459 4,736 5,195
Riverside 0 1,295 1,295
San Diego 105 3,187 3,292
San Francisco 1,613 0 1,613
Santa Barbara 15 528 543
Santa Cruz 538 532 1,070
Lawrence Berkeley 0 0 0
Lawrence Livermore 0 0 0
Los Alamos 0 0 0
Other - UC 0 583 583
Other-Network UC n/a 4,644 4,644
_______ ______ _____
11,191 20,673 31,864
1.4 Response time
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Search response time from receipt of command at
DLA until transmission of response:
Average in seconds 0.4
Standard deviation in seconds 0.9
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) 6:28
Average session length (minutes:seconds) 12:39
Longest session recorded (minutes:seconds) 226:56
Average number of searches completed per session 4.0
Retrievals per search - median 7.0
Retrievals per search - average 356.4
Retrievals per search - standard deviation 2830.2
Percent of searches completed with 0 results 23.8%
Percent of searches entered that are long 2.2%
Percent of long searches completed
(includes partial results) 71.1%
Commands entered, by type, excluding errors:
Total Percentage
__________ __________
FIND 3,117 29.8%
DISPLAY (excluding automatic displays) 4,624 44.2%
BROWSE 1 0.0%
SELECT 0 0.0%
HELP 53 0.5%
EXPLAIN 67 0.6%
SET/RESET 333 3.2%
SHOW 19 0.2%
ADD ON (AND, OR, AND NOT) 342 3.3%
LOGON or LOGOFF 1,232 11.8%
COMMENT 0 0.0%
SAVE 386 3.7%
USE 0 0.0%
OTHER 277 2.7%
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 1,426 34.4% 240 16.8% 16 60.5 158.4
TITLE WORD 256 6.2% 85 33.2% 11 188.6 620.9
EXACT TITLE 39 0.9% 13 33.3% 3 46.9 140.0
JOURNAL 57 1.4% 15 26.3% 364 1471.7 3404.6
EXACT JOURNAL 66 1.6% 10 15.2% 284 1392.8 3424.0
SUBJECT 139 3.3% 73 52.5% 209 3408.7 8933.9
EXACT SUBJECT 464 11.2% 258 55.6% 2 19.5 97.4
KEYWORD 735 17.7% 103 14.0% 39 962.3 4169.3
FORM/PUB TYPE 17 0.4% 2 11.8% 5 94.5 189.3
DATE 605 14.6% 282 46.6% 3 17.5 44.1
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% 66 66.0 0.0
CONFERENCE 0 0.0% 0 0.0% 0 0.0 0.0
LANGUAGE 1 0.0% 0 0.0% 45 45.0 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 18 0.4% 0 0.0% 1 1.0 0.0
PERIODICAL 34 0.8% 5 14.7% 5 73.1 252.7
EXACT PE 20 0.5% 5 25.0% 1 9.6 16.7
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 272 6.6% 104 38.2% 2 6.8 12.9
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 759 24.5% 312 41.1% 3 25.7 91.4
Single 2,339 75.5% 465 19.9% 29 569.7 3127.8
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 1 100% 1 100% 0.0 0.0 0.0
EXACT SUBJECT 0 0.0% 0 0.0% 0.0 0.0 0.0
DISPLAY commands, by type, excluding automatic displays:
REVIEW 1.1%
SHORT 88.2%
LONG 1.2%
TAGS 1.8%
FIELDS 5.4%
BROWSE REVIEW 0.0%
BROWSE LONG 0.0%
PERIODICALS 1.2%
COMMENTS 0.0%
Other 1.1%
2.2 Error, EXPLAIN and HELP statistics
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Percent of commands that contained errors 9.3%
Ten most frequent errors:
1. NS command - no next screen 30.3%
2. DISPLAY command - no FIND results 26.7%
3. First word of command is invalid 16.9%
4. FIND command with invalid index name 6.7%
5. DISPLAY command contains invalid word 4.6%
6. PS command - no previous screen 3.4%
7. DISPLAY command-record numbers too large 1.7%
8. Valid command at an inappropriate time 1.5%
9. Search term missing from search command 1.0%
10. Add-on search, no index name after verb 0.9%
11. All others 6.3%
Ten most frequent EXPLAIN requests:
1. LOCATE (INS/PSY DBS) 28.4%
2. GUIDE 22.4%
3. FIND (PSY DB) 13.4%
4. COMMANDS (ABI/PSY DBS) 4.5%
5. DISPLAY (INS/PSY DBS) 4.5%
6. Unrecognized term 4.5%
7. MAIL 3.0%
8. FIND LOCATION 3.0%
9. INDEXES (PSY DB) 3.0%
10. ADDON SEARCH 3.0%
11. All others 10.4%
Ten most frequent HELP situations:
1. Help requested from SET DB command 20.8%
2. DISPLAY command - middle of >1 screen 12.5%
3. First word of command is invalid 11.7%
4. FIND command with invalid index name 9.2%
5. DISPLAY command-first of >1 screen 8.3%
6. FIND command retrieves >1 book 5.8%
7. FIND command with zero results 5.0%
8. NS command - no next screen 4.2%
9. DISPLAY command - no FIND results 2.5%
10. DISPLAY command-complete in one screen 2.5%
11. All others 17.5%
Ten most frequent SHOW requests:
1. HISTORY 61.1%
2. SEARCH 27.8%
3. PSYCINFO NEWS 5.6%
4. GLOSSARY 5.6%
11. All others 0.0%
PSYmm/dd psy MELVYL PSYCINFO DATABASE TELNET STATISTICS (weekly)