MELVYL PSYCINFO DATABASE TELNET STATISTICS
Time period: 11/10/01 through 11/16/01
1.0 SUMMARY STATISTICS
_______________________
1.1 Total sessions:
____________________
Zero results may indicate no access to the database
Location Library Remote Total
________ _______ ______ _____
Berkeley 18 149 167
Davis 103 0 103
Irvine 52 0 52
Los Angeles 3 117 120
Riverside 14 20 34
San Diego 10 69 79
San Francisco 31 0 31
Santa Barbara 3 39 42
Santa Cruz 0 27 27
Lawrence Berkeley 0 0 0
Lawrence Livermore 0 0 0
Los Alamos 0 0 0
Other - UC 0 27 27
Other-Network UC n/a 139 139
_______ ______ _____
234 587 821
Per hour usage:
Time Sessions Finds Records Displayed
__________ __________ __________ _________________
12-2 a.m. 11 32 401
2-4 a.m. 12 250 797
4-6 a.m. 0 0 0
6-8 a.m. 14 37 118
8-10 a.m. 82 379 3,236
10-12 a.m. 142 440 4,387
12-2 p.m. 163 563 5,070
2-4 p.m. 165 496 4,385
4-6 p.m. 117 342 4,451
6-8 p.m. 49 173 2,152
8-10 p.m. 33 283 2,785
10-12 p.m. 33 102 1,716
__________ __________ __________ _________________
Total: 821 3,097 29,498
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 44 507 551
Davis 507 0 507
Irvine 192 0 192
Los Angeles 28 504 532
Riverside 49 125 174
San Diego 33 225 258
San Francisco 114 0 114
Santa Barbara 4 150 154
Santa Cruz 0 98 98
Lawrence Berkeley 0 0 0
Lawrence Livermore 0 0 0
Los Alamos 0 0 0
Other - UC 0 95 95
Other-Network UC n/a 422 422
_______ ______ _____
971 2,126 3,097
1.3 Records displayed
______________________
Zero results may indicate no access to the database
Number of Records Displayed by location:
Location Library Remote Total
________ _______ ______ _____
Berkeley 430 4,957 5,387
Davis 3,447 0 3,447
Irvine 1,849 0 1,849
Los Angeles 84 7,675 7,759
Riverside 248 666 914
San Diego 74 1,913 1,987
San Francisco 1,137 0 1,137
Santa Barbara 7 2,404 2,411
Santa Cruz 0 1,190 1,190
Lawrence Berkeley 0 0 0
Lawrence Livermore 0 0 0
Los Alamos 0 0 0
Other - UC 0 755 755
Other-Network UC n/a 2,662 2,662
_______ ______ _____
7,276 22,222 29,498
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) 7:27
Average session length (minutes:seconds) 13:10
Longest session recorded (minutes:seconds) 252:55
Average number of searches completed per session 3.7
Retrievals per search - median 7.0
Retrievals per search - average 687.6
Retrievals per search - standard deviation 8370.0
Percent of searches completed with 0 results 25.2%
Percent of searches entered that are long 3.3%
Percent of long searches completed
(includes partial results) 69.3%
Commands entered, by type, excluding errors:
Total Percentage
__________ __________
FIND 2,823 32.4%
DISPLAY (excluding automatic displays) 3,444 39.6%
BROWSE 19 0.2%
SELECT 9 0.1%
HELP 109 1.3%
EXPLAIN 111 1.3%
SET/RESET 251 2.9%
SHOW 35 0.4%
ADD ON (AND, OR, AND NOT) 270 3.1%
LOGON or LOGOFF 1,212 13.9%
COMMENT 0 0.0%
SAVE 186 2.1%
USE 0 0.0%
OTHER 263 3.0%
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 1,276 36.0% 195 15.3% 14 61.1 242.9
TITLE WORD 278 7.8% 76 27.3% 6 153.5 770.9
EXACT TITLE 57 1.6% 28 49.1% 1 7.2 16.1
JOURNAL 40 1.1% 10 25.0% 249 1042.1 2786.1
EXACT JOURNAL 30 0.8% 5 16.7% 309 1027.0 1815.2
SUBJECT 208 5.9% 113 54.3% 412 6663.1 13684.2
EXACT SUBJECT 256 7.2% 191 74.6% 3 1080.2 4641.1
KEYWORD 720 20.3% 125 17.4% 30 2028.6 17859.0
FORM/PUB TYPE 27 0.8% 3 11.1% 25 61.5 150.5
DATE 436 12.3% 219 50.2% 6 25.9 69.8
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. 7 0.2% 0 0.0% 14 126.6 283.7
CONFERENCE 0 0.0% 0 0.0% 0 0.0 0.0
LANGUAGE 0 0.0% 0 0.0% 0 0.0 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 4 0.1% 0 0.0% 1 1.0 0.0
PERIODICAL 56 1.6% 11 19.6% 4 41.7 168.3
EXACT PE 2 0.1% 0 0.0% 3 3.0 1.4
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 146 4.1% 93 63.7% 3 12.4 18.9
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 582 20.9% 256 44.0% 5 85.9 1067.6
Single 2,207 79.1% 455 20.6% 23 1151.7 11020.6
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 19 100% 4 21.1% 2 4.9 5.9
EXACT SUBJECT 0 0.0% 0 0.0% 0 0.0 0.0
DISPLAY commands, by type, excluding automatic displays:
REVIEW 1.2%
SHORT 89.0%
LONG 1.6%
TAGS 0.6%
FIELDS 3.9%
BROWSE REVIEW 0.4%
BROWSE LONG 0.2%
PERIODICALS 1.7%
COMMENTS 0.0%
Other 1.4%
2.2 Error, EXPLAIN and HELP statistics
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Percent of commands that contained errors 10.2%
Ten most frequent errors:
1. NS command - no next screen 27.7%
2. First word of command is invalid 20.1%
3. DISPLAY command - no FIND results 20.1%
4. FIND command with invalid index name 8.3%
5. PS command - no previous screen 4.6%
6. DISPLAY command contains invalid word 2.1%
7. Search term missing from search command 2.0%
8. Max. # of ports to a Z39 db are in use 1.9%
9. Add-on search, no index name after verb 1.6%
10. Valid command at an inappropriate time 1.5%
11. All others 10.0%
Ten most frequent EXPLAIN requests:
1. LOCATE (INS/PSY DBS) 19.8%
2. GUIDE 15.3%
3. FIND (PSY DB) 10.8%
4. Unrecognized term 7.2%
5. INDEXES (PSY DB) 4.5%
6. ADDON SEARCH 3.6%
7. COMMANDS (ABI/PSY DBS) 2.7%
8. DISPLAY (INS/PSY DBS) 2.7%
9. P145 2.7%
10. SAVE 2.7%
11. All others 27.9%
Ten most frequent HELP situations:
1. First word of command is invalid 17.3%
2. Help requested from SET DB command 15.0%
3. FIND command with invalid index name 12.3%
4. DISPLAY command - middle of >1 screen 8.2%
5. NS command - no next screen 5.5%
6. DISPLAY command-first of >1 screen 5.5%
7. FIND command retrieves >1 book 4.1%
8. PS command - no previous screen 3.6%
9. DISPLAY command-complete in one screen 3.6%
10. FIND command with zero results 3.2%
11. All others 21.8%
Ten most frequent SHOW requests:
1. HISTORY 44.8%
2. MAIL STATUS 24.1%
3. SEARCH 13.8%
4. BIBLIOGRAPHIC SOFTWARE 3.4%
5. GLOSSARY 3.4%
6. SYSTEM NEWS 3.4%
7. MAIL SETTINGS 3.4%
8. DISPLAY (MED/INS/PSY DBS) 3.4%
11. All others 0.0%
PSYmm/dd psy MELVYL PSYCINFO DATABASE TELNET STATISTICS (weekly)