MELVYL PSYCINFO DATABASE TELNET STATISTICS
Time period: 10/27/01 through 11/02/01
1.0 SUMMARY STATISTICS
_______________________
1.1 Total sessions:
____________________
Zero results may indicate no access to the database
Location Library Remote Total
________ _______ ______ _____
Berkeley 32 183 215
Davis 166 5 171
Irvine 33 0 33
Los Angeles 1 106 107
Riverside 5 40 45
San Diego 11 124 135
San Francisco 45 0 45
Santa Barbara 2 40 42
Santa Cruz 4 31 35
Lawrence Berkeley 0 0 0
Lawrence Livermore 0 0 0
Los Alamos 0 0 0
Other - UC 0 58 58
Other-Network UC n/a 219 219
_______ ______ _____
299 806 1,105
Per hour usage:
Time Sessions Finds Records Displayed
__________ __________ __________ _________________
12-2 a.m. 17 35 345
2-4 a.m. 24 289 824
4-6 a.m. 8 64 252
6-8 a.m. 21 68 423
8-10 a.m. 93 323 2,600
10-12 a.m. 191 597 6,519
12-2 p.m. 204 787 7,749
2-4 p.m. 231 901 7,771
4-6 p.m. 166 570 5,234
6-8 p.m. 78 294 2,764
8-10 p.m. 45 201 2,599
10-12 p.m. 27 90 1,586
__________ __________ __________ _________________
Total: 1,105 4,219 38,666
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 129 833 962
Davis 802 21 823
Irvine 104 0 104
Los Angeles 7 397 404
Riverside 5 157 162
San Diego 63 369 432
San Francisco 160 0 160
Santa Barbara 3 150 153
Santa Cruz 10 123 133
Lawrence Berkeley 0 0 0
Lawrence Livermore 0 0 0
Los Alamos 0 0 0
Other - UC 0 287 287
Other-Network UC n/a 599 599
_______ ______ _____
1,283 2,936 4,219
1.3 Records displayed
______________________
Zero results may indicate no access to the database
Number of Records Displayed by location:
Location Library Remote Total
________ _______ ______ _____
Berkeley 1,017 10,237 11,254
Davis 5,585 169 5,754
Irvine 792 0 792
Los Angeles 396 4,740 5,136
Riverside 84 1,264 1,348
San Diego 258 3,281 3,539
San Francisco 2,732 0 2,732
Santa Barbara 8 1,507 1,515
Santa Cruz 55 1,213 1,268
Lawrence Berkeley 0 0 0
Lawrence Livermore 0 0 0
Los Alamos 0 0 0
Other - UC 0 1,608 1,608
Other-Network UC n/a 3,720 3,720
_______ ______ _____
10,927 27,739 38,666
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 1.0
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) 8:32
Average session length (minutes:seconds) 12:52
Longest session recorded (minutes:seconds) 208:22
Average number of searches completed per session 3.8
Retrievals per search - median 7.0
Retrievals per search - average 738.2
Retrievals per search - standard deviation 5394.2
Percent of searches completed with 0 results 23.7%
Percent of searches entered that are long 3.2%
Percent of long searches completed
(includes partial results) 76.7%
Commands entered, by type, excluding errors:
Total Percentage
__________ __________
FIND 3,749 30.7%
DISPLAY (excluding automatic displays) 4,868 39.9%
BROWSE 24 0.2%
SELECT 2 0.0%
HELP 172 1.4%
EXPLAIN 161 1.3%
SET/RESET 348 2.9%
SHOW 50 0.4%
ADD ON (AND, OR, AND NOT) 469 3.8%
LOGON or LOGOFF 1,590 13.0%
COMMENT 0 0.0%
SAVE 434 3.6%
USE 1 0.0%
OTHER 355 2.9%
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 1,706 37.3% 300 17.6% 13 53.5 282.9
TITLE WORD 440 9.6% 127 28.9% 6 83.2 329.2
EXACT TITLE 29 0.6% 18 62.1% 2 12.3 18.9
JOURNAL 112 2.4% 37 33.0% 139 1045.6 2746.6
EXACT JOURNAL 60 1.3% 8 13.3% 764 2973.3 4607.2
SUBJECT 330 7.2% 150 45.5% 1,343 8307.3 16443.8
EXACT SUBJECT 259 5.7% 184 71.0% 4 1672.4 4862.0
KEYWORD 896 19.6% 139 15.5% 40 968.3 6281.3
FORM/PUB TYPE 13 0.3% 2 15.4% 137 1156.1 1829.5
DATE 439 9.6% 210 47.8% 3 17.3 51.7
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. 2 0.0% 0 0.0% 23 22.5 30.4
CONFERENCE 3 0.1% 2 66.7% 13 13.0 0.0
LANGUAGE 3 0.1% 0 0.0% 1,606 1442.0 1166.7
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 9 0.2% 0 0.0% 1 1.0 0.0
PERIODICAL 99 2.2% 26 26.3% 3 42.4 231.7
EXACT PE 12 0.3% 1 8.3% 3 67.2 201.3
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 162 3.5% 96 59.3% 4 200.8 1319.6
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 682 18.3% 285 41.8% 4 62.7 378.5
Single 3,044 81.7% 634 20.8% 26 1110.4 6204.8
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 23 95.8% 11 47.8% 4 4.7 4.6
EXACT SUBJECT 1 4.2% 1 100% 0 0.0 0.0
DISPLAY commands, by type, excluding automatic displays:
REVIEW 2.7%
SHORT 85.8%
LONG 0.9%
TAGS 1.1%
FIELDS 5.5%
BROWSE REVIEW 0.2%
BROWSE LONG 0.0%
PERIODICALS 2.3%
COMMENTS 0.0%
Other 1.4%
2.2 Error, EXPLAIN and HELP statistics
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Percent of commands that contained errors 9.4%
Ten most frequent errors:
1. NS command - no next screen 28.2%
2. First word of command is invalid 24.8%
3. DISPLAY command - no FIND results 15.8%
4. FIND command with invalid index name 8.4%
5. PS command - no previous screen 5.7%
6. DISPLAY command contains invalid word 2.8%
7. Valid command at an inappropriate time 2.5%
8. Add-on search, no index name after verb 1.6%
9. Search term missing from search command 1.2%
10. 1243 0.8%
11. All others 8.2%
Ten most frequent EXPLAIN requests:
1. LOCATE (INS/PSY DBS) 24.2%
2. GUIDE 14.9%
3. FIND (PSY DB) 11.2%
4. Unrecognized term 8.7%
5. ADDON SEARCH 7.5%
6. COMMANDS (ABI/PSY DBS) 6.2%
7. DISPLAY (INS/PSY DBS) 3.7%
8. LOCATIONS 2.5%
9. SEARCH (PSY DB) 2.5%
10. INDEXES (PSY DB) 2.5%
11. All others 16.1%
Ten most frequent HELP situations:
1. Help requested from SET DB command 15.6%
2. First word of command is invalid 14.7%
3. FIND command retrieves >1 book 10.2%
4. FIND command with invalid index name 9.3%
5. DISPLAY command-first of >1 screen 9.0%
6. DISPLAY command - middle of >1 screen 6.6%
7. FIND command with zero results 6.3%
8. DISPLAY command - last of >1 screen 4.2%
9. DISPLAY command-complete in one screen 3.6%
10. PS command - no previous screen 3.0%
11. All others 17.4%
Ten most frequent SHOW requests:
1. SEARCH 43.8%
2. HISTORY 39.6%
3. PSYCINFO NEWS 8.3%
4. GLOSSARY 4.2%
5. MAIL SETTINGS 2.1%
6. MAIL STATUS 2.1%
11. All others 0.0%
PSYmm/dd psy MELVYL PSYCINFO DATABASE TELNET STATISTICS (weekly)