MELVYL ABI DATABASE TELNET STATISTICS
Time period: 01/27/01 through 02/02/01
1.0 SUMMARY STATISTICS
_______________________
1.1 Total sessions:
____________________
Zero results may indicate no access to the database
Location Library Remote Total
________ _______ ______ _____
Berkeley 4 76 80
Davis 23 0 23
Irvine 34 0 34
Los Angeles 6 19 25
Riverside 3 0 3
San Diego 6 2 8
San Francisco 12 0 12
Santa Barbara 4 2 6
Santa Cruz 5 2 7
Lawrence Berkeley 0 0 0
Lawrence Livermore 0 2 2
Los Alamos 0 0 0
Other - UC 2 1 3
Other-Network UC n/a 73 73
_______ ______ _____
99 177 276
Per hour usage:
Time Sessions Finds Records Displayed
__________ __________ __________ _________________
12-2 a.m. 2 4 3
2-4 a.m. 1 1 5
4-6 a.m. 2 3 38
6-8 a.m. 9 40 517
8-10 a.m. 30 87 700
10-12 a.m. 57 145 1,193
12-2 p.m. 45 136 1,150
2-4 p.m. 54 134 1,589
4-6 p.m. 29 66 1,470
6-8 p.m. 22 79 1,393
8-10 p.m. 18 49 1,456
10-12 p.m. 7 12 55
__________ __________ __________ _________________
Total: 276 756 9,569
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 10 203 213
Davis 48 0 48
Irvine 83 0 83
Los Angeles 5 71 76
Riverside 5 0 5
San Diego 5 8 13
San Francisco 91 0 91
Santa Barbara 9 7 16
Santa Cruz 11 14 25
Lawrence Berkeley 0 0 0
Lawrence Livermore 0 1 1
Los Alamos 0 0 0
Other - UC 2 3 5
Other-Network UC n/a 180 180
_______ ______ _____
269 487 756
1.3 Records displayed
______________________
Zero results may indicate no access to the database
Number of Records Displayed by location:
Location Library Remote Total
________ _______ ______ _____
Berkeley 43 3,044 3,087
Davis 329 0 329
Irvine 553 0 553
Los Angeles 64 2,447 2,511
Riverside 2 0 2
San Diego 27 59 86
San Francisco 683 0 683
Santa Barbara 25 22 47
Santa Cruz 77 42 119
Lawrence Berkeley 0 0 0
Lawrence Livermore 0 85 85
Los Alamos 0 0 0
Other - UC 0 98 98
Other-Network UC n/a 1,969 1,969
_______ ______ _____
1,803 7,766 9,569
1.4 Response time
__________________
Search response time from receipt of command at
DLA until transmission of response:
Average in seconds 0.6
Standard deviation in seconds 1.9
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) 9:41
Average session length (minutes:seconds) 17:21
Longest session recorded (minutes:seconds) 437:11
Average number of searches completed per session 2.7
Retrievals per search - median 4.5
Retrievals per search - average 1694.1
Retrievals per search - standard deviation 9382.3
Percent of searches completed with 0 results 32.2%
Percent of searches entered that are long 4.6%
Percent of long searches completed
(includes partial results) 54.3%
Commands entered, by type, excluding errors:
Total Percentage
__________ __________
FIND 679 27.3%
DISPLAY (excluding automatic displays) 951 38.3%
BROWSE 0 0.0%
SELECT 0 0.0%
HELP 46 1.9%
EXPLAIN 40 1.6%
SET/RESET 131 5.3%
SHOW 5 0.2%
ADD ON (AND, OR, AND NOT) 77 3.1%
LOGON or LOGOFF 318 12.8%
COMMENT 0 0.0%
SAVE 167 6.7%
USE 1 0.0%
OTHER 69 2.8%
2.1 Article Text
_________________
DISPLAY TEXT commands 90
TEXT included with CONTINUOUS, PRINT, CAPTURE, or SLOW 23
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 187 25.4% 49 26.2% 11 47.9 113.5
TITLE WORD 144 19.6% 69 47.9% 9 77.9 204.9
EXACT TITLE 20 2.7% 11 55.0% 1 3.3 5.4
JOURNAL 38 5.2% 16 42.1% 271 2094.8 8131.8
EXACT JOURNAL 14 1.9% 3 21.4% 534 7314.0 13184.5
SUBJECT 86 11.7% 52 60.5% 640 10172.6 18824.6
EXACT SUBJECT 8 1.1% 2 25.0% 173 2872.2 6694.2
KEYWORD 184 25.0% 27 14.7% 82 2327.3 10909.8
PUB TYPE 2 0.3% 0 0.0% 362 361.5 103.9
DATE 26 3.5% 10 38.5% 80 181.4 259.3
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 1 0.1% 0 0.0% 1 1.0 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 1 0.1% 1 100% 0 0.0 0.0
ISSN 0 0.0% 0 0.0% 0 0.0 0.0
PERIODICAL 15 2.0% 0 0.0% 3 6.8 6.9
EXACT PE 6 0.8% 0 0.0% 2 7.8 12.2
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 3 0.4% 0 0.0% 3 206.7 353.6
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 63 9.4% 21 33.3% 6 108.3 205.4
Single 604 90.6% 198 32.8% 26 2124.0 9543.6
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 0 0.0% 0 0.0% 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 3.2%
SHORT 88.4%
LONG 0.6%
TAGS 0.0%
FIELDS 1.8%
BROWSE REVIEW 0.0%
BROWSE LONG 0.0%
PERIODICALS 3.5%
COMMENTS 0.0%
Other 2.5%
2.2 Error, EXPLAIN and HELP statistics
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Percent of commands that contained errors 8.7%
Ten most frequent errors:
1. NS command - no next screen 33.1%
2. First word of command is invalid 25.8%
3. FIND command with invalid index name 11.4%
4. DISPLAY command contains invalid word 5.5%
5. PS command - no previous screen 2.1%
6. 422 2.1%
7. DISPLAY command-record numbers too large 1.7%
8. Add-on search, no index name after verb 1.7%
9. SET DB command entered w/o modifier 1.3%
10. DISPLAY command - no FIND results 1.3%
11. All others 14.0%
Ten most frequent EXPLAIN requests:
1. GUIDE (ABI DB) 17.5%
2. FIND (ABI DB) 15.0%
3. INDEXES (ABI DB) 12.5%
4. COMMANDS (ABI/PSY DBS) 12.5%
5. ABI/INFORM DB 7.5%
6. LOCATE (ARTICLE DBS) 7.5%
7. PUBLICATION TYPES (ABI DB) 5.0%
8. MAGS TEXT 2.5%
9. BROWSE (ABI DB) 2.5%
10. SUBJECT INDEX (ABI DB) 2.5%
11. All others 15.0%
Ten most frequent HELP situations:
1. Help requested from SET DB command 26.7%
2. First word of command is invalid 14.0%
3. FIND command with zero results 7.0%
4. DISPLAY command-first of >1 screen 7.0%
5. FIND command with invalid index name 5.8%
6. FIND command retrieves >1 book 5.8%
7. DISPLAY command - middle of >1 screen 4.7%
8. SET DB command entered w/o modifier 3.5%
9. PS command - no previous screen 3.5%
10. Help requested from MAIL command 3.5%
11. All others 18.6%
Ten most frequent SHOW requests:
1. MAIL STATUS 40.0%
2. HISTORY 40.0%
3. SEARCH 20.0%
11. All others 0.0%
ABImm/dd abi MELVYL ABI DATABASE TELNET STATISTICS (weekly)