MELVYL PSYCINFO DATABASE TELNET STATISTICS
Time period: 12/16/00 through 12/22/00
1.0 SUMMARY STATISTICS
_______________________
1.1 Total sessions:
____________________
Zero results may indicate no access to the database
Location Library Remote Total
________ _______ ______ _____
Berkeley 47 140 187
Davis 53 1 54
Irvine 41 0 41
Los Angeles 37 99 136
Riverside 4 7 11
San Diego 7 69 76
San Francisco 45 0 45
Santa Barbara 3 41 44
Santa Cruz 1 39 40
Lawrence Berkeley 0 0 0
Lawrence Livermore 0 0 0
Los Alamos 0 0 0
Other - UC 10 14 24
Other-Network UC n/a 77 77
_______ ______ _____
248 487 735
Per hour usage:
Time Sessions Finds Records Displayed
__________ __________ __________ _________________
12-2 a.m. 13 70 658
2-4 a.m. 1 8 76
4-6 a.m. 3 4 33
6-8 a.m. 15 54 572
8-10 a.m. 87 282 3,198
10-12 a.m. 150 422 4,845
12-2 p.m. 154 554 6,126
2-4 p.m. 129 567 6,613
4-6 p.m. 96 435 3,771
6-8 p.m. 31 86 1,168
8-10 p.m. 35 101 1,292
10-12 p.m. 21 82 458
__________ __________ __________ _________________
Total: 735 2,665 28,810
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 211 554 765
Davis 136 4 140
Irvine 186 0 186
Los Angeles 120 431 551
Riverside 14 23 37
San Diego 15 213 228
San Francisco 192 0 192
Santa Barbara 7 147 154
Santa Cruz 6 189 195
Lawrence Berkeley 0 0 0
Lawrence Livermore 0 0 0
Los Alamos 0 0 0
Other - UC 3 22 25
Other-Network UC n/a 192 192
_______ ______ _____
890 1,775 2,665
1.3 Records displayed
______________________
Zero results may indicate no access to the database
Number of Records Displayed by location:
Location Library Remote Total
________ _______ ______ _____
Berkeley 2,530 6,568 9,098
Davis 1,007 33 1,040
Irvine 2,250 0 2,250
Los Angeles 1,462 3,438 4,900
Riverside 280 309 589
San Diego 133 1,290 1,423
San Francisco 2,283 0 2,283
Santa Barbara 165 2,007 2,172
Santa Cruz 75 1,619 1,694
Lawrence Berkeley 0 0 0
Lawrence Livermore 0 0 0
Los Alamos 0 0 0
Other - UC 84 185 269
Other-Network UC n/a 3,092 3,092
_______ ______ _____
10,269 18,541 28,810
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) 7:02
Average session length (minutes:seconds) 11:47
Longest session recorded (minutes:seconds) 153:15
Average number of searches completed per session 3.6
Retrievals per search - median 10.0
Retrievals per search - average 403.7
Retrievals per search - standard deviation 3468.0
Percent of searches completed with 0 results 21.9%
Percent of searches entered that are long 3.3%
Percent of long searches completed
(includes partial results) 62.5%
Commands entered, by type, excluding errors:
Total Percentage
__________ __________
FIND 2,354 27.0%
DISPLAY (excluding automatic displays) 3,896 44.7%
BROWSE 34 0.4%
SELECT 5 0.1%
HELP 42 0.5%
EXPLAIN 65 0.7%
SET/RESET 229 2.6%
SHOW 37 0.4%
ADD ON (AND, OR, AND NOT) 310 3.6%
LOGON or LOGOFF 1,090 12.5%
COMMENT 0 0.0%
SAVE 406 4.7%
USE 4 0.0%
OTHER 292 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 1,336 51.3% 281 21.0% 16 65.2 220.3
TITLE WORD 312 12.0% 103 33.0% 8 57.6 129.4
EXACT TITLE 11 0.4% 4 36.4% 2 62.3 141.6
JOURNAL 44 1.7% 10 22.7% 487 1669.2 2981.2
EXACT JOURNAL 20 0.8% 9 45.0% 991 1727.1 1689.1
SUBJECT 144 5.5% 59 41.0% 200 4540.0 13604.4
EXACT SUBJECT 10 0.4% 2 20.0% 139 455.4 839.5
KEYWORD 527 20.3% 69 13.1% 49 1018.7 5426.7
FORM/PUB TYPE 3 0.1% 1 33.3% 54 54.0 0.0
DATE 124 4.8% 29 23.4% 5 409.8 1700.2
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. 5 0.2% 1 20.0% 64 66.8 65.5
CONFERENCE 0 0.0% 0 0.0% 0 0.0 0.0
LANGUAGE 2 0.1% 0 0.0% 54 54.0 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 0 0.0% 0 0.0% 0 0.0 0.0
PERIODICAL 55 2.1% 16 29.1% 9 65.6 198.9
EXACT PE 5 0.2% 3 60.0% 6 6.0 7.1
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 4 0.2% 0 0.0% 348 346.5 373.5
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 258 11.1% 63 24.4% 7 224.2 1200.7
Single 2,068 88.9% 457 22.1% 26 601.0 4379.3
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 19 55.9% 7 36.8% 1 7.3 10.9
EXACT SUBJECT 15 44.1% 4 26.7% 1 1.1 0.3
DISPLAY commands, by type, excluding automatic displays:
REVIEW 1.3%
SHORT 90.6%
LONG 0.8%
TAGS 0.0%
FIELDS 2.6%
BROWSE REVIEW 0.6%
BROWSE LONG 0.4%
PERIODICALS 1.9%
COMMENTS 0.0%
Other 1.8%
2.2 Error, EXPLAIN and HELP statistics
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Percent of commands that contained errors 7.9%
Ten most frequent errors:
1. NS command - no next screen 40.5%
2. First word of command is invalid 24.0%
3. FIND command with invalid index name 9.8%
4. PS command - no previous screen 4.0%
5. DISPLAY command contains invalid word 3.4%
6. Valid command at an inappropriate time 2.5%
7. Search term missing from search command 1.7%
8. DISPLAY command - no FIND results 1.5%
9. DISPLAY command-record numbers too large 1.3%
10. Add-on search, no index name after verb 1.2%
11. All others 10.1%
Ten most frequent EXPLAIN requests:
1. GUIDE 29.2%
2. LOCATE (INS/PSY DBS) 21.5%
3. FIND (PSY DB) 13.8%
4. INDEXES (PSY DB) 7.7%
5. DISPLAY (INS/PSY DBS) 4.6%
6. Unrecognized term 4.6%
7. LOCATIONS 3.1%
8. MAGS TEXT 1.5%
9. MAIL 1.5%
10. SEARCH (PSY DB) 1.5%
11. All others 10.8%
Ten most frequent HELP situations:
1. Help requested from SET DB command 21.5%
2. First word of command is invalid 18.7%
3. FIND command with zero results 9.3%
4. FIND command with invalid index name 7.5%
5. DISPLAY command-first of >1 screen 7.5%
6. DISPLAY command-complete in one screen 4.7%
7. DISPLAY command - middle of >1 screen 4.7%
8. SHOW NEWS command 2.8%
9. FIND command retrieves >1 book 2.8%
10. DISPLAY command - last of >1 screen 2.8%
11. All others 17.8%
Ten most frequent SHOW requests:
1. HISTORY 80.6%
2. SEARCH 8.3%
3. PSYCINFO NEWS 2.8%
4. GLOSSARY 2.8%
5. SYSTEM NEWS 2.8%
6. MAIL STATUS 2.8%
11. All others 0.0%
PSYmm/dd psy MELVYL PSYCINFO DATABASE TELNET STATISTICS (weekly)