MELVYL PSYCINFO DATABASE TELNET STATISTICS
Time period: 09/22/01 through 09/28/01
1.0 SUMMARY STATISTICS
_______________________
1.1 Total sessions:
____________________
Zero results may indicate no access to the database
Location Library Remote Total
________ _______ ______ _____
Berkeley 9 178 187
Davis 89 2 91
Irvine 43 0 43
Los Angeles 6 116 122
Riverside 11 30 41
San Diego 8 132 140
San Francisco 56 0 56
Santa Barbara 1 58 59
Santa Cruz 7 18 25
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 152 152
_______ ______ _____
230 713 943
Per hour usage:
Time Sessions Finds Records Displayed
__________ __________ __________ _________________
12-2 a.m. 18 44 762
2-4 a.m. 11 35 521
4-6 a.m. 8 22 285
6-8 a.m. 28 106 804
8-10 a.m. 108 322 3,099
10-12 a.m. 175 660 5,568
12-2 p.m. 171 754 8,561
2-4 p.m. 213 780 7,442
4-6 p.m. 115 399 2,849
6-8 p.m. 36 204 1,618
8-10 p.m. 31 104 1,002
10-12 p.m. 29 119 998
__________ __________ __________ _________________
Total: 943 3,549 33,509
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 24 618 642
Davis 315 6 321
Irvine 212 0 212
Los Angeles 19 372 391
Riverside 64 225 289
San Diego 50 460 510
San Francisco 127 0 127
Santa Barbara 4 189 193
Santa Cruz 15 118 133
Lawrence Berkeley 0 0 0
Lawrence Livermore 0 0 0
Los Alamos 0 0 0
Other - UC 0 171 171
Other-Network UC n/a 560 560
_______ ______ _____
830 2,719 3,549
1.3 Records displayed
______________________
Zero results may indicate no access to the database
Number of Records Displayed by location:
Location Library Remote Total
________ _______ ______ _____
Berkeley 111 8,290 8,401
Davis 3,113 2 3,115
Irvine 1,230 0 1,230
Los Angeles 137 3,395 3,532
Riverside 371 985 1,356
San Diego 213 3,451 3,664
San Francisco 2,315 0 2,315
Santa Barbara 11 1,829 1,840
Santa Cruz 152 1,792 1,944
Lawrence Berkeley 0 0 0
Lawrence Livermore 0 0 0
Los Alamos 0 0 0
Other - UC 0 1,903 1,903
Other-Network UC n/a 4,209 4,209
_______ ______ _____
7,653 25,856 33,509
1.4 Response time
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Search response time from receipt of command at
DLA until transmission of response:
Average in seconds 0.4
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) 9:31
Average session length (minutes:seconds) 13:51
Longest session recorded (minutes:seconds) 276:27
Average number of searches completed per session 3.7
Retrievals per search - median 10.0
Retrievals per search - average 1017.4
Retrievals per search - standard deviation 11713
Percent of searches completed with 0 results 20.3%
Percent of searches entered that are long 4.2%
Percent of long searches completed
(includes partial results) 78.0%
Commands entered, by type, excluding errors:
Total Percentage
__________ __________
FIND 3,168 31.3%
DISPLAY (excluding automatic displays) 4,193 41.4%
BROWSE 1 0.0%
SELECT 1 0.0%
HELP 72 0.7%
EXPLAIN 53 0.5%
SET/RESET 305 3.0%
SHOW 20 0.2%
ADD ON (AND, OR, AND NOT) 381 3.8%
LOGON or LOGOFF 1,312 13.0%
COMMENT 0 0.0%
SAVE 327 3.2%
USE 0 0.0%
OTHER 293 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 1,634 45.9% 312 19.1% 18 81.2 259.1
TITLE WORD 457 12.8% 137 30.0% 8 114.0 537.2
EXACT TITLE 36 1.0% 11 30.6% 2 14.2 28.4
JOURNAL 82 2.3% 22 26.8% 260 1290.6 2178.2
EXACT JOURNAL 80 2.2% 20 25.0% 343 1100.7 1951.4
SUBJECT 161 4.5% 61 37.9% 54 1873.1 4730.8
EXACT SUBJECT 6 0.2% 1 16.7% 1,357 1683.0 1826.0
KEYWORD 845 23.7% 98 11.6% 43 4119.7 25082.8
FORM/PUB TYPE 8 0.2% 2 25.0% 3 8.8 11.3
DATE 152 4.3% 29 19.1% 6 25.1 52.1
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. 4 0.1% 2 50.0% 332 332.0 468.1
CONFERENCE 0 0.0% 0 0.0% 0 0.0 0.0
LANGUAGE 10 0.3% 1 10.0% 3 159.6 449.3
ISSN 0 0.0% 0 0.0% 0 0.0 0.0
ISBN 1 0.0% 0 0.0% 13 13.0 0.0
ID NUMBER 5 0.1% 2 40.0% 1 1.0 0.0
PERIODICAL 56 1.6% 4 7.1% 6 56.9 139.9
EXACT PE 17 0.5% 4 23.5% 2 16.2 29.7
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 7 0.2% 1 14.3% 130 1216.2 1778.5
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 384 12.2% 77 20.1% 4 33.1 216.0
Single 2,753 87.8% 543 19.7% 32 1608.4 14737.3
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 1 100% 0 0.0% 1 1.0 0.0
EXACT SUBJECT 0 0.0% 0 0.0% 0 0.0 0.0
DISPLAY commands, by type, excluding automatic displays:
REVIEW 2.3%
SHORT 90.3%
LONG 0.9%
TAGS 0.1%
FIELDS 2.6%
BROWSE REVIEW 0.0%
BROWSE LONG 0.0%
PERIODICALS 2.2%
COMMENTS 0.0%
Other 1.6%
2.2 Error, EXPLAIN and HELP statistics
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Percent of commands that contained errors 8.3%
Ten most frequent errors:
1. NS command - no next screen 39.2%
2. First word of command is invalid 26.0%
3. FIND command with invalid index name 8.0%
4. DISPLAY command contains invalid word 5.5%
5. PS command - no previous screen 4.6%
6. Valid command at an inappropriate time 2.4%
7. Search term missing from search command 1.8%
8. DISPLAY command - no FIND results 1.5%
9. DISPLAY command-record numbers too large 1.5%
10. Command contains escape or arrow key 1.0%
11. All others 8.5%
Ten most frequent EXPLAIN requests:
1. GUIDE 20.8%
2. LOCATE (INS/PSY DBS) 17.0%
3. FIND (PSY DB) 13.2%
4. INDEXES (PSY DB) 9.4%
5. MAIL 7.5%
6. COMMANDS (ABI/PSY DBS) 3.8%
7. DISPLAY (INS/PSY DBS) 3.8%
8. SUBJECT INDEX (PSY DB) 3.8%
9. SAVE 3.8%
10. 5341 3.8%
11. All others 13.2%
Ten most frequent HELP situations:
1. Help requested from SET DB command 21.6%
2. FIND command with invalid index name 12.0%
3. First word of command is invalid 11.2%
4. DISPLAY command - middle of >1 screen 8.0%
5. FIND command with zero results 6.4%
6. DISPLAY command-first of >1 screen 6.4%
7. NS command - no next screen 5.6%
8. DISPLAY command-complete in one screen 4.8%
9. Valid command at an inappropriate time 3.2%
10. DISPLAY command contains invalid word 3.2%
11. All others 17.6%
Ten most frequent SHOW requests:
1. HISTORY 45.0%
2. SEARCH 40.0%
3. PSYCINFO NEWS 5.0%
4. TIME 5.0%
5. TIMEOUT SETTING 5.0%
11. All others 0.0%
PSYmm/dd psy MELVYL PSYCINFO DATABASE TELNET STATISTICS (weekly)