MELVYL PSYCINFO DATABASE TELNET STATISTICS
Time period: 01/27/01 through 02/02/01
1.0 SUMMARY STATISTICS
_______________________
1.1 Total sessions:
____________________
Zero results may indicate no access to the database
Location Library Remote Total
________ _______ ______ _____
Berkeley 54 230 284
Davis 319 0 319
Irvine 78 0 78
Los Angeles 28 183 211
Riverside 22 22 44
San Diego 7 112 119
San Francisco 82 0 82
Santa Barbara 20 34 54
Santa Cruz 26 43 69
Lawrence Berkeley 0 0 0
Lawrence Livermore 0 0 0
Los Alamos 0 0 0
Other - UC 0 20 20
Other-Network UC n/a 137 137
_______ ______ _____
636 781 1,417
Per hour usage:
Time Sessions Finds Records Displayed
__________ __________ __________ _________________
12-2 a.m. 15 82 598
2-4 a.m. 12 40 280
4-6 a.m. 106 542 1,297
6-8 a.m. 35 66 684
8-10 a.m. 144 506 3,390
10-12 a.m. 222 949 9,658
12-2 p.m. 279 1,000 8,904
2-4 p.m. 270 1,118 10,596
4-6 p.m. 136 567 5,939
6-8 p.m. 79 237 2,724
8-10 p.m. 91 346 2,925
10-12 p.m. 28 140 1,095
__________ __________ __________ _________________
Total: 1,417 5,593 48,090
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 218 1,045 1,263
Davis 1,146 0 1,146
Irvine 264 0 264
Los Angeles 115 808 923
Riverside 78 92 170
San Diego 5 486 491
San Francisco 300 0 300
Santa Barbara 126 97 223
Santa Cruz 103 144 247
Lawrence Berkeley 0 0 0
Lawrence Livermore 0 0 0
Los Alamos 0 0 0
Other - UC 0 54 54
Other-Network UC n/a 512 512
_______ ______ _____
2,355 3,238 5,593
1.3 Records displayed
______________________
Zero results may indicate no access to the database
Number of Records Displayed by location:
Location Library Remote Total
________ _______ ______ _____
Berkeley 1,835 9,280 11,115
Davis 6,317 0 6,317
Irvine 2,293 0 2,293
Los Angeles 1,517 5,900 7,417
Riverside 1,134 1,004 2,138
San Diego 32 4,095 4,127
San Francisco 4,703 0 4,703
Santa Barbara 751 1,566 2,317
Santa Cruz 1,128 1,226 2,354
Lawrence Berkeley 0 0 0
Lawrence Livermore 0 0 0
Los Alamos 0 0 0
Other - UC 0 521 521
Other-Network UC n/a 4,788 4,788
_______ ______ _____
19,710 28,380 48,090
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 1.0
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) 6:02
Average session length (minutes:seconds) 11:46
Longest session recorded (minutes:seconds) 213:08
Average number of searches completed per session 3.9
Retrievals per search - median 5.0
Retrievals per search - average 640.5
Retrievals per search - standard deviation 5360.2
Percent of searches completed with 0 results 27.5%
Percent of searches entered that are long 2.5%
Percent of long searches completed
(includes partial results) 55.8%
Commands entered, by type, excluding errors:
Total Percentage
__________ __________
FIND 5,089 30.5%
DISPLAY (excluding automatic displays) 6,488 38.9%
BROWSE 40 0.2%
SELECT 9 0.1%
HELP 277 1.7%
EXPLAIN 222 1.3%
SET/RESET 547 3.3%
SHOW 82 0.5%
ADD ON (AND, OR, AND NOT) 504 3.0%
LOGON or LOGOFF 2,227 13.4%
COMMENT 0 0.0%
SAVE 776 4.7%
USE 5 0.0%
OTHER 459 2.8%
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 2,088 32.7% 441 21.1% 15 57.5 169.9
TITLE WORD 733 11.5% 241 32.9% 11 89.9 297.1
EXACT TITLE 47 0.7% 25 53.2% 1 50.3 174.4
JOURNAL 67 1.1% 22 32.8% 327 2859.2 5020.8
EXACT JOURNAL 25 0.4% 9 36.0% 317 1642.8 2247.6
SUBJECT 475 7.4% 255 53.7% 274 5886.9 15931.2
EXACT SUBJECT 506 7.9% 338 66.8% 2 54.2 319.3
KEYWORD 1,001 15.7% 138 13.8% 80 1992.7 9968.0
FORM/PUB TYPE 29 0.5% 3 10.3% 27 2417.2 10965.1
DATE 807 12.7% 396 49.1% 4 104.9 455.8
ADDED 1 0.0% 0 0.0% 21 21.0 0.0
ARTICLE 0 0.0% 0 0.0% 0 0.0 0.0
AUTHOR AFFIL. 0 0.0% 0 0.0% 0 0.0 0.0
CONFERENCE 1 0.0% 1 100% 0 0.0 0.0
LANGUAGE 10 0.2% 0 0.0% 136 317.0 386.6
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 181 2.8% 0 0.0% 1 1.0 0.0
PERIODICAL 78 1.2% 24 30.8% 6 321.4 1716.8
EXACT PE 20 0.3% 2 10.0% 2 3.3 5.3
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 309 4.8% 161 52.1% 2 290.1 1815.0
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 1,033 20.5% 462 44.7% 5 176.9 1573.7
Single 3,998 79.5% 966 24.2% 26 1082.8 7069.7
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 39 97.5% 19 48.7% 9 21.8 25.9
EXACT SUBJECT 1 2.5% 0 0.0% 2 2.0 0.0
DISPLAY commands, by type, excluding automatic displays:
REVIEW 1.9%
SHORT 85.3%
LONG 1.0%
TAGS 3.0%
FIELDS 3.6%
BROWSE REVIEW 0.3%
BROWSE LONG 0.1%
PERIODICALS 2.0%
COMMENTS 0.0%
Other 2.9%
2.2 Error, EXPLAIN and HELP statistics
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Percent of commands that contained errors 10.5%
Ten most frequent errors:
1. First word of command is invalid 25.2%
2. NS command - no next screen 25.2%
3. DISPLAY command - no FIND results 18.9%
4. FIND command with invalid index name 8.1%
5. PS command - no previous screen 4.1%
6. DISPLAY command contains invalid word 3.6%
7. Search term missing from search command 2.1%
8. Valid command at an inappropriate time 1.9%
9. Add-on search, no index name after verb 1.0%
10. BROWSE command with invalid index name 1.0%
11. All others 8.8%
Ten most frequent EXPLAIN requests:
1. LOCATE (INS/PSY DBS) 24.3%
2. GUIDE 20.3%
3. Unrecognized term 9.5%
4. COMMANDS (ABI/PSY DBS) 7.7%
5. FIND (PSY DB) 5.0%
6. MAIL 3.2%
7. SEARCH (PSY DB) 2.7%
8. INDEXES (PSY DB) 2.7%
9. DISPLAY (INS/PSY DBS) 2.3%
10. LIMIT (PSY DB) 2.3%
11. All others 20.3%
Ten most frequent HELP situations:
1. Help requested from SET DB command 18.8%
2. First word of command is invalid 14.6%
3. FIND command with invalid index name 7.8%
4. DISPLAY command-first of >1 screen 7.2%
5. FIND command with zero results 5.8%
6. FIND command retrieves >1 book 5.0%
7. PS command - no previous screen 4.6%
8. DISPLAY command - middle of >1 screen 4.0%
9. DISPLAY command-complete in one screen 3.0%
10. DISPLAY command - last of >1 screen 2.6%
11. All others 26.5%
Ten most frequent SHOW requests:
1. HISTORY 31.2%
2. SEARCH 23.4%
3. MAIL STATUS 23.4%
4. MAIL SETTINGS 10.4%
5. PSYCINFO NEWS 5.2%
6. GLOSSARY 2.6%
7. SETTINGS (INS/PSY DBS) 1.3%
8. LIBRARY SETTINGS 1.3%
9. DISPLAY (MED/INS/PSY DBS) 1.3%
11. All others 0.0%
PSYmm/dd psy MELVYL PSYCINFO DATABASE TELNET STATISTICS (weekly)