MELVYL ABI DATABASE TELNET STATISTICS
Time period: 12/09/00 through 12/15/00
1.0 SUMMARY STATISTICS
_______________________
1.1 Total sessions:
____________________
Zero results may indicate no access to the database
Location Library Remote Total
________ _______ ______ _____
Berkeley 5 53 58
Davis 13 2 15
Irvine 11 0 11
Los Angeles 0 23 23
Riverside 8 1 9
San Diego 0 7 7
San Francisco 7 0 7
Santa Barbara 1 1 2
Santa Cruz 0 3 3
Lawrence Berkeley 0 0 0
Lawrence Livermore 0 1 1
Los Alamos 0 0 0
Other - UC 0 0 0
Other-Network UC n/a 47 47
_______ ______ _____
45 138 183
Per hour usage:
Time Sessions Finds Records Displayed
__________ __________ __________ _________________
12-2 a.m. 3 16 96
2-4 a.m. 1 1 16
4-6 a.m. 2 2 3
6-8 a.m. 2 6 7
8-10 a.m. 26 61 847
10-12 a.m. 23 78 1,334
12-2 p.m. 24 69 1,313
2-4 p.m. 39 86 614
4-6 p.m. 33 97 1,407
6-8 p.m. 6 11 153
8-10 p.m. 15 37 730
10-12 p.m. 9 41 814
__________ __________ __________ _________________
Total: 183 505 7,334
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 26 145 171
Davis 36 1 37
Irvine 52 0 52
Los Angeles 0 71 71
Riverside 17 3 20
San Diego 2 27 29
San Francisco 17 0 17
Santa Barbara 0 2 2
Santa Cruz 0 10 10
Lawrence Berkeley 0 0 0
Lawrence Livermore 0 2 2
Los Alamos 0 0 0
Other - UC 0 0 0
Other-Network UC n/a 94 94
_______ ______ _____
150 355 505
1.3 Records displayed
______________________
Zero results may indicate no access to the database
Number of Records Displayed by location:
Location Library Remote Total
________ _______ ______ _____
Berkeley 65 2,420 2,485
Davis 217 0 217
Irvine 487 0 487
Los Angeles 0 1,146 1,146
Riverside 50 0 50
San Diego 0 350 350
San Francisco 160 0 160
Santa Barbara 0 34 34
Santa Cruz 0 13 13
Lawrence Berkeley 0 0 0
Lawrence Livermore 0 221 221
Los Alamos 0 0 0
Other - UC 0 0 0
Other-Network UC n/a 2,171 2,171
_______ ______ _____
979 6,355 7,334
1.4 Response time
__________________
Search response time from receipt of command at
DLA until transmission of response:
Average in seconds 0.5
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) 9:01
Average session length (minutes:seconds) 12:03
Longest session recorded (minutes:seconds) 117:18
Average number of searches completed per session 2.7
Retrievals per search - median 6.0
Retrievals per search - average 538.0
Retrievals per search - standard deviation 2719.8
Percent of searches completed with 0 results 29.5%
Percent of searches entered that are long 1.4%
Percent of long searches completed
(includes partial results) 42.9%
Commands entered, by type, excluding errors:
Total Percentage
__________ __________
FIND 460 29.3%
DISPLAY (excluding automatic displays) 599 38.1%
BROWSE 1 0.1%
SELECT 0 0.0%
HELP 14 0.9%
EXPLAIN 29 1.8%
SET/RESET 79 5.0%
SHOW 1 0.1%
ADD ON (AND, OR, AND NOT) 45 2.9%
LOGON or LOGOFF 233 14.8%
COMMENT 0 0.0%
SAVE 52 3.3%
USE 1 0.1%
OTHER 58 3.7%
2.1 Article Text
_________________
DISPLAY TEXT commands 45
TEXT included with CONTINUOUS, PRINT, CAPTURE, or SLOW 20
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 123 24.2% 30 24.4% 12 129.0 448.7
TITLE WORD 109 21.4% 46 42.2% 3 27.8 78.7
EXACT TITLE 6 1.2% 5 83.3% 1 1.0 0.0
JOURNAL 27 5.3% 7 25.9% 14 1046.0 2818.5
EXACT JOURNAL 19 3.7% 6 31.6% 1,342 6244.2 12884.4
SUBJECT 35 6.9% 21 60.0% 141 2434.3 4206.0
EXACT SUBJECT 3 0.6% 2 66.7% 8,038 8038.0 0.0
KEYWORD 148 29.1% 22 14.9% 76 857.3 2331.9
PUB TYPE 2 0.4% 0 0.0% 331 331.0 0.0
DATE 23 4.5% 3 13.0% 21 77.6 132.3
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 0 0.0% 0 0.0% 0 0.0 0.0
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 2 0.4% 2 100% 0 0.0 0.0
ISSN 0 0.0% 0 0.0% 0 0.0 0.0
PERIODICAL 10 2.0% 3 30.0% 3 42.4 68.8
EXACT PE 1 0.2% 0 0.0% 2 2.0 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 1 0.2% 1 100% 0 0.0 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 46 10.1% 7 15.2% 12 68.6 120.8
Single 411 89.9% 133 32.4% 32 946.5 3601.2
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 2.5%
SHORT 88.9%
LONG 0.6%
TAGS 0.0%
FIELDS 3.5%
BROWSE REVIEW 0.0%
BROWSE LONG 0.0%
PERIODICALS 2.1%
COMMENTS 0.0%
Other 2.5%
2.2 Error, EXPLAIN and HELP statistics
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Percent of commands that contained errors 8.8%
Ten most frequent errors:
1. NS command - no next screen 30.3%
2. First word of command is invalid 28.3%
3. FIND command with invalid index name 9.9%
4. DISPLAY command contains invalid word 5.3%
5. 434 3.9%
6. Max. # of ports to a Z39 db are in use 3.9%
7. DISPLAY command - no FIND results 2.6%
8. PS command - no previous screen 2.0%
9. 96 2.0%
10. Add-on search, no index name after verb 2.0%
11. All others 9.9%
Ten most frequent EXPLAIN requests:
1. GUIDE (ABI DB) 17.2%
2. INDEXES (ABI DB) 10.3%
3. DISPLAY (ABI DB) 10.3%
4. B091 10.3%
5. FIND (ABI DB) 6.9%
6. B087 6.9%
7. LOCATE (ARTICLE DBS) 6.9%
8. FULL TEXT 3.4%
9. ABI/INFORM DB 3.4%
10. BROWSE (ABI DB) 3.4%
11. All others 20.7%
Ten most frequent HELP situations:
1. Help requested from SET DB command 27.9%
2. DISPLAY command-complete in one screen 23.3%
3. FIND command with invalid index name 9.3%
4. FIND command with zero results 9.3%
5. NS command - no next screen 7.0%
6. First word of command is invalid 4.7%
7. Add-on without index name after verb 4.7%
8. DISPLAY command-first of >1 screen 4.7%
9. DISPLAY command - middle of >1 screen 4.7%
10. 143 2.3%
11. All others 2.3%
Ten most frequent SHOW requests:
1. HISTORY 100%
11. All others 0.0%
ABImm/dd abi MELVYL ABI DATABASE TELNET STATISTICS (weekly)