MELVYL ABI DATABASE TELNET STATISTICS
Time period: 05/05/01 through 05/11/01
1.0 SUMMARY STATISTICS
_______________________
1.1 Total sessions:
____________________
Zero results may indicate no access to the database
Location Library Remote Total
________ _______ ______ _____
Berkeley 8 50 58
Davis 10 1 11
Irvine 20 0 20
Los Angeles 0 25 25
Riverside 3 0 3
San Diego 2 8 10
San Francisco 8 0 8
Santa Barbara 0 1 1
Santa Cruz 0 0 0
Lawrence Berkeley 0 0 0
Lawrence Livermore 0 1 1
Los Alamos 0 0 0
Other - UC 0 1 1
Other-Network UC n/a 48 48
_______ ______ _____
51 135 186
Per hour usage:
Time Sessions Finds Records Displayed
__________ __________ __________ _________________
12-2 a.m. 3 29 308
2-4 a.m. 2 5 26
4-6 a.m. 2 7 38
6-8 a.m. 1 7 104
8-10 a.m. 17 47 2,069
10-12 a.m. 41 111 1,468
12-2 p.m. 24 72 743
2-4 p.m. 42 104 1,805
4-6 p.m. 20 54 590
6-8 p.m. 20 65 310
8-10 p.m. 4 19 205
10-12 p.m. 10 28 443
__________ __________ __________ _________________
Total: 186 548 8,109
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 33 137 170
Davis 22 1 23
Irvine 78 0 78
Los Angeles 0 56 56
Riverside 9 0 9
San Diego 6 38 44
San Francisco 26 0 26
Santa Barbara 0 1 1
Santa Cruz 0 0 0
Lawrence Berkeley 0 0 0
Lawrence Livermore 0 3 3
Los Alamos 0 0 0
Other - UC 0 2 2
Other-Network UC n/a 136 136
_______ ______ _____
174 374 548
1.3 Records displayed
______________________
Zero results may indicate no access to the database
Number of Records Displayed by location:
Location Library Remote Total
________ _______ ______ _____
Berkeley 193 1,948 2,141
Davis 231 3 234
Irvine 1,938 0 1,938
Los Angeles 0 1,172 1,172
Riverside 218 0 218
San Diego 5 213 218
San Francisco 887 0 887
Santa Barbara 0 33 33
Santa Cruz 0 0 0
Lawrence Berkeley 0 0 0
Lawrence Livermore 0 113 113
Los Alamos 0 0 0
Other - UC 0 28 28
Other-Network UC n/a 1,127 1,127
_______ ______ _____
3,472 4,637 8,109
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 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 ABI Database Detailed Statistics
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Median session length (minutes:seconds) 11:30
Average session length (minutes:seconds) 13:42
Longest session recorded (minutes:seconds) 103:10
Average number of searches completed per session 2.9
Retrievals per search - median 5.5
Retrievals per search - average 714.1
Retrievals per search - standard deviation 2951.6
Percent of searches completed with 0 results 23.6%
Percent of searches entered that are long 2.9%
Percent of long searches completed
(includes partial results) 37.5%
Commands entered, by type, excluding errors:
Total Percentage
__________ __________
FIND 489 24.6%
DISPLAY (excluding automatic displays) 975 49.1%
BROWSE 1 0.1%
SELECT 2 0.1%
HELP 10 0.5%
EXPLAIN 15 0.8%
SET/RESET 83 4.2%
SHOW 12 0.6%
ADD ON (AND, OR, AND NOT) 58 2.9%
LOGON or LOGOFF 229 11.5%
COMMENT 0 0.0%
SAVE 69 3.5%
USE 0 0.0%
OTHER 47 2.4%
2.1 Article Text
_________________
DISPLAY TEXT commands 78
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 163 30.5% 38 23.3% 13 72.9 269.9
TITLE WORD 120 22.5% 40 33.3% 5 54.2 95.0
EXACT TITLE 9 1.7% 5 55.6% 38 38.0 30.0
JOURNAL 8 1.5% 1 12.5% 178 1616.0 2705.2
EXACT JOURNAL 16 3.0% 2 12.5% 894 3960.4 7470.5
SUBJECT 18 3.4% 5 27.8% 131 227.8 273.9
EXACT SUBJECT 4 0.7% 0 0.0% 34 1243.5 2432.4
KEYWORD 146 27.3% 33 22.6% 32 1018.7 3663.3
PUB TYPE 4 0.7% 0 0.0% 61 46.0 30.0
DATE 18 3.4% 7 38.9% 2 33.1 93.9
ADDED 4 0.7% 0 0.0% 14,032 14032.0 0.0
ARTICLE 0 0.0% 0 0.0% 0 0.0 0.0
LANGUAGE 2 0.4% 1 50.0% 3,568 3568.0 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 5 0.9% 0 0.0% 772 3108.4 3959.5
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 5 0.9% 2 40.0% 78 134.3 167.8
EXACT PE 6 1.1% 1 16.7% 4 7.0 8.3
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 1.1% 0 0.0% 7,528 7199.2 7487.1
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 51 10.6% 16 31.4% 3 125.6 601.7
Single 431 89.4% 102 23.7% 21 954.5 3422.1
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% 3 3.0 0.0
EXACT SUBJECT 0 0.0% 0 0.0% 0 0.0 0.0
DISPLAY commands, by type, excluding automatic displays:
REVIEW 3.6%
SHORT 88.7%
LONG 0.8%
TAGS 0.0%
FIELDS 2.7%
BROWSE REVIEW 0.1%
BROWSE LONG 0.0%
PERIODICALS 1.5%
COMMENTS 0.0%
Other 2.6%
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 31.9%
2. First word of command is invalid 29.8%
3. DISPLAY command contains invalid word 5.8%
4. FIND command with invalid index name 5.2%
5. PS command - no previous screen 4.2%
6. Valid command at an inappropriate time 2.1%
7. SET command with invalid setting 1.6%
8. DISPLAY command-record numbers too large 1.6%
9. Add-on search, no index name after verb 1.0%
10. BROWSE command with invalid index name 1.0%
11. All others 15.7%
Ten most frequent EXPLAIN requests:
1. INDEXES (ABI DB) 26.7%
2. GUIDE (ABI DB) 13.3%
3. MAIL 13.3%
4. MAGS TEXT 6.7%
5. ABI/INFORM DB 6.7%
6. FIND (ABI DB) 6.7%
7. BROWSE (ABI DB) 6.7%
8. DATE (ABI DB) 6.7%
9. G175 6.7%
10. DATABASES 6.7%
11. All others 0.0%
Ten most frequent HELP situations:
1. Help requested from SET DB command 20.0%
2. First word of command is invalid 12.0%
3. FIND command with invalid index name 8.0%
4. BROWSE command with invalid index name 8.0%
5. FIND command with zero results 8.0%
6. DISPLAY command - middle of >1 screen 8.0%
7. DISPLAY command - last of >1 screen 8.0%
8. Multi-index search with zero results 8.0%
9. MELVYL system could not process command 4.0%
10. DISPLAY command contains invalid word 4.0%
11. All others 12.0%
Ten most frequent SHOW requests:
1. HISTORY 87.5%
2. SEARCH 12.5%
11. All others 0.0%
ABImm/dd abi MELVYL ABI DATABASE TELNET STATISTICS (weekly)