MELVYL ABI DATABASE TELNET STATISTICS
Time period: 02/03/01 through 02/09/01
1.0 SUMMARY STATISTICS
_______________________
1.1 Total sessions:
____________________
Zero results may indicate no access to the database
Location Library Remote Total
________ _______ ______ _____
Berkeley 4 69 73
Davis 24 0 24
Irvine 16 0 16
Los Angeles 0 54 54
Riverside 3 0 3
San Diego 6 2 8
San Francisco 11 0 11
Santa Barbara 3 1 4
Santa Cruz 2 1 3
Lawrence Berkeley 0 0 0
Lawrence Livermore 0 0 0
Los Alamos 0 0 0
Other - UC 0 2 2
Other-Network UC n/a 74 74
_______ ______ _____
69 203 272
Per hour usage:
Time Sessions Finds Records Displayed
__________ __________ __________ _________________
12-2 a.m. 5 10 127
2-4 a.m. 3 40 201
4-6 a.m. 4 16 228
6-8 a.m. 10 24 184
8-10 a.m. 41 112 878
10-12 a.m. 38 86 535
12-2 p.m. 43 126 1,037
2-4 p.m. 63 171 1,777
4-6 p.m. 32 90 532
6-8 p.m. 11 52 1,002
8-10 p.m. 18 54 1,708
10-12 p.m. 4 10 606
__________ __________ __________ _________________
Total: 272 791 8,815
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 6 215 221
Davis 60 0 60
Irvine 52 0 52
Los Angeles 0 176 176
Riverside 8 0 8
San Diego 23 3 26
San Francisco 46 0 46
Santa Barbara 15 1 16
Santa Cruz 6 5 11
Lawrence Berkeley 0 0 0
Lawrence Livermore 0 0 0
Los Alamos 0 0 0
Other - UC 1 3 4
Other-Network UC n/a 171 171
_______ ______ _____
217 574 791
1.3 Records displayed
______________________
Zero results may indicate no access to the database
Number of Records Displayed by location:
Location Library Remote Total
________ _______ ______ _____
Berkeley 38 2,434 2,472
Davis 629 0 629
Irvine 660 0 660
Los Angeles 0 2,961 2,961
Riverside 2 0 2
San Diego 39 33 72
San Francisco 360 0 360
Santa Barbara 79 38 117
Santa Cruz 15 312 327
Lawrence Berkeley 0 0 0
Lawrence Livermore 0 0 0
Los Alamos 0 0 0
Other - UC 0 1 1
Other-Network UC n/a 1,214 1,214
_______ ______ _____
1,822 6,993 8,815
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 1.3
Display response time from receipt of command at
DLA until transmission of a complete screen:
Average in seconds 0.1
Standard deviation in seconds 0.2
2.0 ABI Database Detailed Statistics
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Median session length (minutes:seconds) 10:39
Average session length (minutes:seconds) 14:43
Longest session recorded (minutes:seconds) 146:58
Average number of searches completed per session 2.9
Retrievals per search - median 6.0
Retrievals per search - average 1046.8
Retrievals per search - standard deviation 8541.7
Percent of searches completed with 0 results 28.7%
Percent of searches entered that are long 3.3%
Percent of long searches completed
(includes partial results) 88.5%
Commands entered, by type, excluding errors:
Total Percentage
__________ __________
FIND 712 30.2%
DISPLAY (excluding automatic displays) 879 37.2%
BROWSE 1 0.0%
SELECT 0 0.0%
HELP 41 1.7%
EXPLAIN 54 2.3%
SET/RESET 124 5.3%
SHOW 12 0.5%
ADD ON (AND, OR, AND NOT) 79 3.3%
LOGON or LOGOFF 313 13.3%
COMMENT 0 0.0%
SAVE 79 3.3%
USE 1 0.0%
OTHER 67 2.8%
2.1 Article Text
_________________
DISPLAY TEXT commands 90
TEXT included with CONTINUOUS, PRINT, CAPTURE, or SLOW 10
displays or when any of these paging options is set.
TEXT included with MAIL commands 0
SET DISPLAY TEXT commands 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 250 30.5% 65 26.0% 9 68.5 295.3
TITLE WORD 133 16.2% 67 50.4% 4 96.2 513.1
EXACT TITLE 21 2.6% 9 42.9% 1 12.3 26.1
JOURNAL 68 8.3% 17 25.0% 291 1497.0 5382.3
EXACT JOURNAL 19 2.3% 8 42.1% 120 634.2 883.4
SUBJECT 34 4.1% 14 41.2% 179 10513.0 32848.5
EXACT SUBJECT 0 0.0% 0 0.0% 0 0.0 0.0
KEYWORD 238 29.0% 49 20.6% 46 2583.5 13132.8
PUB TYPE 3 0.4% 2 66.7% 499 499.0 0.0
DATE 21 2.6% 9 42.9% 35 57.5 79.3
ADDED 0 0.0% 0 0.0% 0 0.0 0.0
ARTICLE 0 0.0% 0 0.0% 0 0.0 0.0
LANGUAGE 0 0.0% 0 0.0% 0 0.0 0.0
GEOGRAPHIC NAME 0 0.0% 0 0.0% 0 0.0 0.0
SUBJ CATEGORY 0 0.0% 0 0.0% 0 0.0 0.0
COMPANY NAME 17 2.1% 2 11.8% 167 1239.7 4186.5
EX COMPANY NAME 0 0.0% 0 0.0% 0 0.0 0.0
DUNS 0 0.0% 0 0.0% 0 0.0 0.0
TICKER SYMBOL 0 0.0% 0 0.0% 0 0.0 0.0
ID NUMBER 0 0.0% 0 0.0% 0 0.0 0.0
ISSN 0 0.0% 0 0.0% 0 0.0 0.0
PERIODICAL 8 1.0% 3 37.5% 58 127.0 181.9
EXACT PE 2 0.2% 1 50.0% 49 49.0 0.0
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 6 0.7% 2 33.3% 1 1.0 0.0
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 106 14.9% 41 38.7% 6 75.1 252.0
Single 604 85.1% 162 26.8% 28 1836.5 11346.6
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 1 100% 1 100% 0.0 0.0 0.0
EXACT SUBJECT 0 0.0% 0 0.0% 0.0 0.0 0.0
DISPLAY commands, by type, excluding automatic displays:
REVIEW 4.7%
SHORT 88.4%
LONG 2.5%
TAGS 0.0%
FIELDS 1.9%
BROWSE REVIEW 0.0%
BROWSE LONG 0.0%
PERIODICALS 1.4%
COMMENTS 0.0%
Other 1.1%
2.2 Error, EXPLAIN and HELP statistics
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Percent of commands that contained errors 9.7%
Ten most frequent errors:
1. NS command - no next screen 36.4%
2. First word of command is invalid 32.0%
3. FIND command with invalid index name 8.3%
4. Valid command at an inappropriate time 3.6%
5. Max. # of ports to a Z39 db are in use 3.2%
6. PS command - no previous screen 2.0%
7. DISPLAY command-record numbers too large 1.6%
8. DISPLAY command contains invalid word 1.6%
9. Command contains escape or arrow key 1.6%
10. 414 1.2%
11. All others 8.7%
Ten most frequent EXPLAIN requests:
1. GUIDE (ABI DB) 27.8%
2. INDEXES (ABI DB) 11.1%
3. FIND (ABI DB) 11.1%
4. LOCATE (ARTICLE DBS) 9.3%
5. COMMANDS (ABI/PSY DBS) 7.4%
6. Unrecognized term 7.4%
7. ABI/INFORM DB 3.7%
8. MAIL 3.7%
9. MAGS TEXT 1.9%
10. A060 1.9%
11. All others 14.8%
Ten most frequent HELP situations:
1. Help requested from SET DB command 31.6%
2. First word of command is invalid 12.6%
3. FIND command with invalid index name 12.6%
4. FIND command with zero results 11.6%
5. DISPLAY command - middle of >1 screen 7.4%
6. DISPLAY command-first of >1 screen 6.3%
7. DISPLAY command-complete in one screen 4.2%
8. PS command - no previous screen 3.2%
9. FIND command retrieves 1 book 2.1%
10. Multi-index search with zero results 2.1%
11. All others 6.3%
Ten most frequent SHOW requests:
1. HISTORY 75.0%
2. SEARCH 16.7%
3. SETTINGS (ABI DB) 8.3%
11. All others 0.0%
ABImm/dd abi MELVYL ABI DATABASE TELNET STATISTICS (weekly)