MELVYL ABI DATABASE TELNET STATISTICS
Time period: 04/01/02 through 04/30/02
1.0 SUMMARY STATISTICS
_______________________
1.1 Total sessions:
____________________
Zero results may indicate no access to the database
Location Library Remote Total
________ _______ ______ _____
Berkeley 19 172 191
Davis 44 0 44
Irvine 41 0 41
Los Angeles 0 86 86
Riverside 6 0 6
San Diego 8 26 34
San Francisco 4 0 4
Santa Barbara 0 11 11
Santa Cruz 5 0 5
Lawrence Berkeley 0 0 0
Lawrence Livermore 0 2 2
Los Alamos 0 0 0
Other - UC 1 11 12
Other-Network UC n/a 141 141
_______ ______ _____
128 449 577
Per hour usage:
Time Sessions Finds Records Displayed
__________ __________ __________ _________________
12-2 a.m. 7 268 134
2-4 a.m. 4 8 666
4-6 a.m. 1 3 2
6-8 a.m. 6 21 101
8-10 a.m. 74 162 1,618
10-12 a.m. 106 282 2,492
12-2 p.m. 94 211 2,990
2-4 p.m. 112 280 4,022
4-6 p.m. 72 198 2,695
6-8 p.m. 34 79 810
8-10 p.m. 18 50 719
10-12 p.m. 49 127 1,907
__________ __________ __________ _________________
Total: 577 1,689 18,156
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 51 741 792
Davis 149 0 149
Irvine 112 0 112
Los Angeles 0 206 206
Riverside 11 0 11
San Diego 10 89 99
San Francisco 14 0 14
Santa Barbara 0 21 21
Santa Cruz 15 0 15
Lawrence Berkeley 0 0 0
Lawrence Livermore 0 2 2
Los Alamos 0 0 0
Other - UC 4 21 25
Other-Network UC n/a 243 243
_______ ______ _____
366 1,323 1,689
1.3 Records displayed
______________________
Zero results may indicate no access to the database
Number of Records Displayed by location:
Location Library Remote Total
________ _______ ______ _____
Berkeley 580 6,217 6,797
Davis 2,681 0 2,681
Irvine 804 0 804
Los Angeles 0 2,765 2,765
Riverside 57 0 57
San Diego 19 1,837 1,856
San Francisco 136 0 136
Santa Barbara 0 126 126
Santa Cruz 15 0 15
Lawrence Berkeley 0 0 0
Lawrence Livermore 0 24 24
Los Alamos 0 0 0
Other - UC 8 35 43
Other-Network UC n/a 2,852 2,852
_______ ______ _____
4,300 13,856 18,156
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 0.9
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 ABI Database Detailed Statistics
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Median session length (minutes:seconds) 8:32
Average session length (minutes:seconds) 17:23
Longest session recorded (minutes:seconds) 822:56
Average number of searches completed per session 2.9
Retrievals per search - median 2.0
Retrievals per search - average 2025.5
Retrievals per search - standard deviation 20496
Percent of searches completed with 0 results 39.7%
Percent of searches entered that are long 2.4%
Percent of long searches completed
(includes partial results) 85.4%
Commands entered, by type, excluding errors:
Total Percentage
__________ __________
FIND 1,504 27.6%
DISPLAY (excluding automatic displays) 2,338 42.9%
BROWSE 1 0.0%
SELECT 0 0.0%
HELP 77 1.4%
EXPLAIN 77 1.4%
SET/RESET 283 5.2%
SHOW 17 0.3%
ADD ON (AND, OR, AND NOT) 185 3.4%
LOGON or LOGOFF 667 12.2%
COMMENT 0 0.0%
SAVE 152 2.8%
USE 3 0.1%
OTHER 152 2.8%
2.1 Article Text
_________________
DISPLAY TEXT commands 164
TEXT included with CONTINUOUS, PRINT, CAPTURE, or SLOW 25
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 710 36.7% 388 54.6% 8 40.0 163.0
TITLE WORD 261 13.5% 112 42.9% 4 77.0 475.9
EXACT TITLE 30 1.5% 15 50.0% 1 2.5 3.8
JOURNAL 53 2.7% 18 34.0% 736 2187.8 4487.5
EXACT JOURNAL 60 3.1% 15 25.0% 738 2101.6 5970.0
SUBJECT 113 5.8% 46 40.7% 1,626 28378.7 77606.1
EXACT SUBJECT 11 0.6% 3 27.3% 3,271 3753.5 3647.0
KEYWORD 257 13.3% 28 10.9% 61 5315.4 33112.4
PUB TYPE 11 0.6% 1 9.1% 43 4426.3 13672.6
DATE 22 1.1% 6 27.3% 25 117.6 225.1
ADDED 336 17.3% 306 91.1% 1 1.0 0.0
ARTICLE 0 0.0% 0 0.0% 0 0.0 0.0
LANGUAGE 1 0.1% 0 0.0% 13 13.0 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 11 0.6% 3 27.3% 155 151.0 144.2
EX COMPANY NAME 1 0.1% 1 100% 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 1 0.1% 1 100% 0 0.0 0.0
PERIODICAL 50 2.6% 3 6.0% 6 18.4 29.7
EXACT PE 4 0.2% 0 0.0% 3 5.8 7.1
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 5 0.3% 1 20.0% 182 517.5 792.6
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 434 29.0% 330 76.0% 2 132.3 475.3
Single 1,064 71.0% 287 27.0% 19 4331.0 29992.2
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 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 1.3%
SHORT 89.7%
LONG 1.8%
TAGS 0.0%
FIELDS 1.6%
BROWSE REVIEW 0.0%
BROWSE LONG 0.0%
PERIODICALS 3.6%
COMMENTS 0.0%
Other 2.0%
2.2 Error, EXPLAIN and HELP statistics
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Percent of commands that contained errors 12.1%
Ten most frequent errors:
1. DISPLAY command - no FIND results 41.5%
2. NS command - no next screen 20.4%
3. First word of command is invalid 16.8%
4. FIND command with invalid index name 6.3%
5. DISPLAY command contains invalid word 2.0%
6. Search term missing from search command 2.0%
7. PS command - no previous screen 1.9%
8. Add-on search, no index name after verb 1.1%
9. NS of SHOW/EXP command-no next screen 1.1%
10. Valid command at an inappropriate time 0.9%
11. All others 6.1%
Ten most frequent EXPLAIN requests:
1. GUIDE (ABI DB) 15.6%
2. INDEXES (ABI DB) 11.7%
3. LOCATE (ARTICLE DBS) 10.4%
4. FIND (ABI DB) 9.1%
5. MAIL 7.8%
6. ADDON SEARCH 7.8%
7. ABI/INFORM DB 3.9%
8. PUBLICATION TYPES (ABI DB) 3.9%
9. Unrecognized term 3.9%
10. DATABASES 3.9%
11. All others 22.1%
Ten most frequent HELP situations:
1. Help requested from SET DB command 20.8%
2. First word of command is invalid 16.9%
3. FIND command retrieves >1 book 9.7%
4. FIND command with invalid index name 8.4%
5. DISPLAY command - middle of >1 screen 7.1%
6. FIND command with zero results 5.8%
7. NS command - no next screen 4.5%
8. DISPLAY command-first of >1 screen 3.9%
9. DISPLAY command-complete in one screen 3.2%
10. FIND command retrieves 1 book 1.9%
11. All others 17.5%
Ten most frequent SHOW requests:
1. SEARCH 73.3%
2. HISTORY 13.3%
3. ABI NEWS 6.7%
4. MAIL STATUS 6.7%
11. All others 0.0%
ABImm/dd abi MELVYL ABI DATABASE TELNET STATISTICS (weekly)