MELVYL PSYCINFO DATABASE TELNET STATISTICS
Time period: 04/06/02 through 04/12/02
1.0 SUMMARY STATISTICS
_______________________
1.1 Total sessions:
____________________
Zero results may indicate no access to the database
Location Library Remote Total
________ _______ ______ _____
Berkeley 23 135 158
Davis 89 2 91
Irvine 52 0 52
Los Angeles 2 83 85
Riverside 2 23 25
San Diego 2 68 70
San Francisco 12 0 12
Santa Barbara 2 18 20
Santa Cruz 2 41 43
Lawrence Berkeley 0 0 0
Lawrence Livermore 0 0 0
Los Alamos 0 0 0
Other - UC 2 32 34
Other-Network UC n/a 106 106
_______ ______ _____
188 508 696
Per hour usage:
Time Sessions Finds Records Displayed
__________ __________ __________ _________________
12-2 a.m. 4 18 177
2-4 a.m. 14 230 1,374
4-6 a.m. 6 16 241
6-8 a.m. 13 46 252
8-10 a.m. 71 254 1,312
10-12 a.m. 110 418 3,598
12-2 p.m. 121 328 2,979
2-4 p.m. 148 527 3,805
4-6 p.m. 97 393 2,906
6-8 p.m. 56 307 2,676
8-10 p.m. 29 118 732
10-12 p.m. 27 116 1,062
__________ __________ __________ _________________
Total: 696 2,771 21,114
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 77 469 546
Davis 477 9 486
Irvine 186 0 186
Los Angeles 12 534 546
Riverside 1 61 62
San Diego 4 184 188
San Francisco 37 0 37
Santa Barbara 4 41 45
Santa Cruz 5 239 244
Lawrence Berkeley 0 0 0
Lawrence Livermore 0 0 0
Los Alamos 0 0 0
Other - UC 6 116 122
Other-Network UC n/a 309 309
_______ ______ _____
809 1,962 2,771
1.3 Records displayed
______________________
Zero results may indicate no access to the database
Number of Records Displayed by location:
Location Library Remote Total
________ _______ ______ _____
Berkeley 624 3,924 4,548
Davis 2,973 27 3,000
Irvine 1,136 0 1,136
Los Angeles 62 4,633 4,695
Riverside 1 226 227
San Diego 28 1,453 1,481
San Francisco 155 0 155
Santa Barbara 37 451 488
Santa Cruz 21 2,530 2,551
Lawrence Berkeley 0 0 0
Lawrence Livermore 0 0 0
Los Alamos 0 0 0
Other - UC 21 934 955
Other-Network UC n/a 1,878 1,878
_______ ______ _____
5,058 16,056 21,114
1.4 Response time
__________________
Search response time from receipt of command at
DLA until transmission of response:
Average in seconds 0.5
Standard deviation in seconds 0.7
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) 12:05
Longest session recorded (minutes:seconds) 224:36
Average number of searches completed per session 3.9
Retrievals per search - median 6.0
Retrievals per search - average 552.4
Retrievals per search - standard deviation 5182.2
Percent of searches completed with 0 results 25.0%
Percent of searches entered that are long 2.4%
Percent of long searches completed
(includes partial results) 69.7%
Commands entered, by type, excluding errors:
Total Percentage
__________ __________
FIND 2,488 30.8%
DISPLAY (excluding automatic displays) 3,408 42.2%
BROWSE 0 0.0%
SELECT 0 0.0%
HELP 90 1.1%
EXPLAIN 82 1.0%
SET/RESET 194 2.4%
SHOW 25 0.3%
ADD ON (AND, OR, AND NOT) 283 3.5%
LOGON or LOGOFF 1,078 13.3%
COMMENT 0 0.0%
SAVE 214 2.6%
USE 2 0.0%
OTHER 219 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 1,082 35.5% 224 20.7% 17 62.6 169.3
TITLE WORD 242 7.9% 69 28.5% 4 225.7 2033.4
EXACT TITLE 51 1.7% 26 51.0% 2 91.4 167.4
JOURNAL 45 1.5% 15 33.3% 988 2383.5 3056.8
EXACT JOURNAL 28 0.9% 10 35.7% 593 1409.8 2109.3
SUBJECT 138 4.5% 74 53.6% 217 3985.3 9004.3
EXACT SUBJECT 211 6.9% 147 69.7% 3 16.4 31.6
KEYWORD 700 23.0% 115 16.4% 22 1509.0 9987.2
FORM/PUB TYPE 4 0.1% 0 0.0% 46 37.8 16.5
DATE 323 10.6% 159 49.2% 4 43.9 373.6
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. 3 0.1% 0 0.0% 1,142 803.0 696.4
CONFERENCE 0 0.0% 0 0.0% 0 0.0 0.0
LANGUAGE 4 0.1% 0 0.0% 21 27.3 12.5
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 5 0.2% 0 0.0% 1 1.0 0.0
PERIODICAL 72 2.4% 5 6.9% 5 49.6 171.1
EXACT PE 11 0.4% 0 0.0% 3 49.9 84.8
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 129 4.2% 67 51.9% 4 205.2 1045.3
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 444 18.0% 201 45.3% 4 51.5 519.8
Single 2,024 82.0% 438 21.6% 23 839.2 6446.0
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 0 0.0% 0 0.0% 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 1.5%
SHORT 88.5%
LONG 0.7%
TAGS 0.9%
FIELDS 4.1%
BROWSE REVIEW 0.0%
BROWSE LONG 0.0%
PERIODICALS 3.4%
COMMENTS 0.0%
Other 0.8%
2.2 Error, EXPLAIN and HELP statistics
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Percent of commands that contained errors 9.9%
Ten most frequent errors:
1. NS command - no next screen 27.2%
2. First word of command is invalid 23.2%
3. DISPLAY command - no FIND results 17.2%
4. FIND command with invalid index name 10.7%
5. PS command - no previous screen 3.8%
6. DISPLAY command contains invalid word 3.4%
7. Search term missing from search command 1.8%
8. Valid command at an inappropriate time 1.3%
9. Command contains escape or arrow key 1.2%
10. NS of SHOW/EXP command-no next screen 1.0%
11. All others 9.2%
Ten most frequent EXPLAIN requests:
1. GUIDE 26.8%
2. LOCATE (INS/PSY DBS) 20.7%
3. FIND (PSY DB) 11.0%
4. FIND LOCATION 4.9%
5. DATABASES 4.9%
6. P470 3.7%
7. Unrecognized term 3.7%
8. COMMANDS (ABI/PSY DBS) 2.4%
9. DISPLAY (INS/PSY DBS) 2.4%
10. SEARCH (PSY DB) 2.4%
11. All others 17.1%
Ten most frequent HELP situations:
1. Help requested from SET DB command 25.6%
2. First word of command is invalid 16.9%
3. FIND command with invalid index name 10.5%
4. FIND command with zero results 7.6%
5. DISPLAY command-first of >1 screen 6.4%
6. FIND command retrieves >1 book 5.8%
7. DISPLAY command - middle of >1 screen 5.2%
8. DISPLAY command-complete in one screen 4.1%
9. DISPLAY command - last of >1 screen 2.9%
10. PS command - no previous screen 2.3%
11. All others 12.8%
Ten most frequent SHOW requests:
1. HISTORY 44.0%
2. PSYCINFO NEWS 16.0%
3. SEARCH 16.0%
4. SETTINGS (INS/PSY DBS) 8.0%
5. IAC STATISTICS 4.0%
6. GLOSSARY 4.0%
7. SYSTEM NEWS 4.0%
8. UPDATE 4.0%
11. All others 0.0%
PSYmm/dd psy MELVYL PSYCINFO DATABASE TELNET STATISTICS (weekly)