MELVYL PSYCINFO DATABASE TELNET STATISTICS
Time period: 04/21/01 through 04/27/01
1.0 SUMMARY STATISTICS
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1.1 Total sessions:
____________________
Zero results may indicate no access to the database
Location Library Remote Total
________ _______ ______ _____
Berkeley 97 205 302
Davis 192 1 193
Irvine 99 0 99
Los Angeles 2 122 124
Riverside 25 54 79
San Diego 14 115 129
San Francisco 57 0 57
Santa Barbara 6 29 35
Santa Cruz 65 48 113
Lawrence Berkeley 0 0 0
Lawrence Livermore 0 0 0
Los Alamos 0 0 0
Other - UC 0 67 67
Other-Network UC n/a 194 194
_______ ______ _____
557 835 1,392
Per hour usage:
Time Sessions Finds Records Displayed
__________ __________ __________ _________________
12-2 a.m. 31 143 1,203
2-4 a.m. 11 138 625
4-6 a.m. 45 325 1,015
6-8 a.m. 24 72 313
8-10 a.m. 114 398 3,304
10-12 a.m. 235 1,005 7,752
12-2 p.m. 245 816 7,594
2-4 p.m. 264 961 10,053
4-6 p.m. 204 751 6,069
6-8 p.m. 106 408 4,532
8-10 p.m. 65 288 2,555
10-12 p.m. 48 222 1,744
__________ __________ __________ _________________
Total: 1,392 5,527 46,759
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 356 752 1,108
Davis 988 4 992
Irvine 440 0 440
Los Angeles 13 591 604
Riverside 82 258 340
San Diego 48 344 392
San Francisco 237 0 237
Santa Barbara 9 124 133
Santa Cruz 265 183 448
Lawrence Berkeley 0 0 0
Lawrence Livermore 0 0 0
Los Alamos 0 0 0
Other - UC 1 233 234
Other-Network UC n/a 599 599
_______ ______ _____
2,439 3,088 5,527
1.3 Records displayed
______________________
Zero results may indicate no access to the database
Number of Records Displayed by location:
Location Library Remote Total
________ _______ ______ _____
Berkeley 4,330 7,899 12,229
Davis 4,974 7 4,981
Irvine 4,851 0 4,851
Los Angeles 41 5,015 5,056
Riverside 403 1,753 2,156
San Diego 149 3,466 3,615
San Francisco 2,008 0 2,008
Santa Barbara 13 1,257 1,270
Santa Cruz 1,858 1,460 3,318
Lawrence Berkeley 0 0 0
Lawrence Livermore 0 0 0
Los Alamos 0 0 0
Other - UC 1 2,363 2,364
Other-Network UC n/a 4,911 4,911
_______ ______ _____
18,628 28,131 46,759
1.4 Response time
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Search response time from receipt of command at
DLA until transmission of response:
Average in seconds 0.6
Standard deviation in seconds 1.2
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) 8:15
Average session length (minutes:seconds) 12:02
Longest session recorded (minutes:seconds) 134:11
Average number of searches completed per session 3.9
Retrievals per search - median 6.0
Retrievals per search - average 630.2
Retrievals per search - standard deviation 4903.0
Percent of searches completed with 0 results 26.0%
Percent of searches entered that are long 2.4%
Percent of long searches completed
(includes partial results) 70.1%
Commands entered, by type, excluding errors:
Total Percentage
__________ __________
FIND 5,003 30.2%
DISPLAY (excluding automatic displays) 6,958 41.9%
BROWSE 20 0.1%
SELECT 4 0.0%
HELP 242 1.5%
EXPLAIN 225 1.4%
SET/RESET 391 2.4%
SHOW 57 0.3%
ADD ON (AND, OR, AND NOT) 524 3.2%
LOGON or LOGOFF 2,178 13.1%
COMMENT 0 0.0%
SAVE 504 3.0%
USE 5 0.0%
OTHER 505 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 1,972 32.2% 377 19.1% 12 58.5 238.6
TITLE WORD 413 6.7% 125 30.3% 11 613.3 5170.5
EXACT TITLE 43 0.7% 19 44.2% 2 43.8 125.4
JOURNAL 98 1.6% 36 36.7% 382 3199.8 5772.0
EXACT JOURNAL 66 1.1% 13 19.7% 494 1817.4 2752.7
SUBJECT 566 9.2% 308 54.4% 332 2422.2 7224.5
EXACT SUBJECT 396 6.5% 243 61.4% 2 64.2 560.7
KEYWORD 1,499 24.5% 252 16.8% 50 1707.8 9049.1
FORM/PUB TYPE 17 0.3% 2 11.8% 9 327.2 801.8
DATE 662 10.8% 279 42.1% 3 56.1 571.4
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% 4 3.5 3.5
CONFERENCE 0 0.0% 0 0.0% 0 0.0 0.0
LANGUAGE 2 0.0% 0 0.0% 19 19.0 5.7
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 31 0.5% 0 0.0% 1 1.0 0.0
PERIODICAL 103 1.7% 21 20.4% 4 52.9 188.1
EXACT PE 12 0.2% 0 0.0% 2 4.5 8.4
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 245 4.0% 119 48.6% 2 15.3 71.1
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 916 18.5% 351 38.3% 4 58.1 491.2
Single 4,040 81.5% 971 24.0% 31 1074.0 6461.2
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 17 85.0% 1 5.9% 1 8.3 15.7
EXACT SUBJECT 3 15.0% 1 33.3% 9 9.0 11.3
DISPLAY commands, by type, excluding automatic displays:
REVIEW 1.8%
SHORT 88.7%
LONG 1.0%
TAGS 1.0%
FIELDS 3.3%
BROWSE REVIEW 0.2%
BROWSE LONG 0.1%
PERIODICALS 2.1%
COMMENTS 0.0%
Other 1.6%
2.2 Error, EXPLAIN and HELP statistics
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Percent of commands that contained errors 10.8%
Ten most frequent errors:
1. NS command - no next screen 28.0%
2. First word of command is invalid 25.2%
3. DISPLAY command - no FIND results 13.7%
4. FIND command with invalid index name 7.4%
5. PS command - no previous screen 4.3%
6. DISPLAY command contains invalid word 4.1%
7. Search term missing from search command 2.6%
8. Valid command at an inappropriate time 2.1%
9. Add-on search, no index name after verb 1.6%
10. DISPLAY command-record numbers too large 1.2%
11. All others 9.7%
Ten most frequent EXPLAIN requests:
1. LOCATE (INS/PSY DBS) 30.2%
2. GUIDE 24.0%
3. FIND (PSY DB) 8.9%
4. DISPLAY (INS/PSY DBS) 5.3%
5. COMMANDS (ABI/PSY DBS) 4.9%
6. Unrecognized term 4.4%
7. INDEXES (PSY DB) 3.1%
8. ADDON SEARCH 3.1%
9. MAGS TEXT 1.8%
10. MAIL 1.8%
11. All others 12.4%
Ten most frequent HELP situations:
1. Help requested from SET DB command 21.0%
2. First word of command is invalid 14.3%
3. DISPLAY command-first of >1 screen 9.0%
4. FIND command with invalid index name 7.3%
5. FIND command with zero results 6.9%
6. DISPLAY command-complete in one screen 5.1%
7. DISPLAY command - middle of >1 screen 4.5%
8. DISPLAY command - last of >1 screen 4.5%
9. FIND command retrieves >1 book 4.1%
10. PS command - no previous screen 3.2%
11. All others 20.1%
Ten most frequent SHOW requests:
1. HISTORY 35.1%
2. SEARCH 21.1%
3. MAIL STATUS 21.1%
4. PSYCINFO NEWS 7.0%
5. MAIL SETTINGS 7.0%
6. PUBLICATION TYPES (PSY DB) 1.8%
7. PSYCINFO STATISTICS 1.8%
8. GLOSSARY 1.8%
9. SYSTEM NEWS 1.8%
10. DISPLAY (MED/INS/PSY DBS) 1.8%
11. All others 0.0%
PSYmm/dd psy MELVYL PSYCINFO DATABASE TELNET STATISTICS (weekly)