MELVYL ABI DATABASE TELNET STATISTICS
Time period: 12/30/00 through 01/05/01
1.0 SUMMARY STATISTICS
_______________________
1.1 Total sessions:
____________________
Zero results may indicate no access to the database
Location Library Remote Total
________ _______ ______ _____
Berkeley 3 42 45
Davis 7 0 7
Irvine 16 0 16
Los Angeles 1 18 19
Riverside 4 0 4
San Diego 1 4 5
San Francisco 11 0 11
Santa Barbara 0 0 0
Santa Cruz 1 0 1
Lawrence Berkeley 0 0 0
Lawrence Livermore 0 0 0
Los Alamos 0 0 0
Other - UC 2 0 2
Other-Network UC n/a 50 50
_______ ______ _____
46 114 160
Per hour usage:
Time Sessions Finds Records Displayed
__________ __________ __________ _________________
12-2 a.m. 5 22 685
2-4 a.m. 2 7 148
4-6 a.m. 2 2 1
6-8 a.m. 1 8 90
8-10 a.m. 18 33 314
10-12 a.m. 27 94 3,180
12-2 p.m. 23 88 844
2-4 p.m. 32 95 1,990
4-6 p.m. 18 56 616
6-8 p.m. 8 37 339
8-10 p.m. 9 77 1,124
10-12 p.m. 15 53 423
__________ __________ __________ _________________
Total: 160 572 9,754
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 9 136 145
Davis 19 0 19
Irvine 71 0 71
Los Angeles 2 61 63
Riverside 10 0 10
San Diego 2 11 13
San Francisco 75 0 75
Santa Barbara 0 0 0
Santa Cruz 2 0 2
Lawrence Berkeley 0 0 0
Lawrence Livermore 0 0 0
Los Alamos 0 0 0
Other - UC 2 0 2
Other-Network UC n/a 172 172
_______ ______ _____
192 380 572
1.3 Records displayed
______________________
Zero results may indicate no access to the database
Number of Records Displayed by location:
Location Library Remote Total
________ _______ ______ _____
Berkeley 318 2,940 3,258
Davis 151 0 151
Irvine 638 0 638
Los Angeles 13 545 558
Riverside 980 0 980
San Diego 1 174 175
San Francisco 1,319 0 1,319
Santa Barbara 0 0 0
Santa Cruz 22 0 22
Lawrence Berkeley 0 0 0
Lawrence Livermore 0 0 0
Los Alamos 0 0 0
Other - UC 11 0 11
Other-Network UC n/a 2,642 2,642
_______ ______ _____
3,453 6,301 9,754
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 1.0
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) 8:28
Average session length (minutes:seconds) 21:48
Longest session recorded (minutes:seconds) 726:40
Average number of searches completed per session 3.5
Retrievals per search - median 6.0
Retrievals per search - average 1651.4
Retrievals per search - standard deviation 11547
Percent of searches completed with 0 results 25.1%
Percent of searches entered that are long 3.1%
Percent of long searches completed
(includes partial results) 66.7%
Commands entered, by type, excluding errors:
Total Percentage
__________ __________
FIND 513 24.4%
DISPLAY (excluding automatic displays) 1,078 51.2%
BROWSE 0 0.0%
SELECT 0 0.0%
HELP 16 0.8%
EXPLAIN 37 1.8%
SET/RESET 68 3.2%
SHOW 2 0.1%
ADD ON (AND, OR, AND NOT) 59 2.8%
LOGON or LOGOFF 197 9.4%
COMMENT 0 0.0%
SAVE 75 3.6%
USE 3 0.1%
OTHER 56 2.7%
2.1 Article Text
_________________
DISPLAY TEXT commands 47
TEXT included with CONTINUOUS, PRINT, CAPTURE, or SLOW 8
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 22.1% 31 25.2% 6 27.0 68.5
TITLE WORD 113 20.3% 38 33.6% 12 97.0 191.1
EXACT TITLE 5 0.9% 2 40.0% 1 1.0 0.0
JOURNAL 41 7.4% 14 34.1% 748 3802.2 8115.5
EXACT JOURNAL 21 3.8% 4 19.0% 1,058 3351.8 8486.7
SUBJECT 61 11.0% 22 36.1% 14 1999.5 5746.2
EXACT SUBJECT 4 0.7% 3 75.0% 30,507 30507.0 0.0
KEYWORD 155 27.8% 19 12.3% 35 4539.6 22404.2
PUB TYPE 6 1.1% 1 16.7% 27 24.4 8.9
DATE 9 1.6% 1 11.1% 14 125.9 204.3
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 8 1.4% 2 25.0% 2 99.5 151.8
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 7 1.3% 0 0.0% 4 5.3 3.5
EXACT PE 4 0.7% 3 75.0% 237 237.0 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 0 0.0% 0 0.0% 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 49 9.7% 11 22.4% 5 54.9 122.1
Single 458 90.3% 118 25.8% 21 2626.8 14775.6
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 4.5%
SHORT 85.7%
LONG 0.0%
TAGS 0.0%
FIELDS 6.5%
BROWSE REVIEW 0.0%
BROWSE LONG 0.0%
PERIODICALS 1.4%
COMMENTS 0.0%
Other 2.0%
2.2 Error, EXPLAIN and HELP statistics
_______________________________________
Percent of commands that contained errors 7.2%
Ten most frequent errors:
1. NS command - no next screen 31.7%
2. First word of command is invalid 24.4%
3. FIND command with invalid index name 9.8%
4. DISPLAY command contains invalid word 6.1%
5. Search term missing from search command 4.3%
6. PS command - no previous screen 3.7%
7. DISPLAY command-record numbers too large 2.4%
8. Add-on search, no index name after verb 2.4%
9. SAVE command issued w/o record numbers 2.4%
10. Max. # of ports to a Z39 db are in use 1.8%
11. All others 11.0%
Ten most frequent EXPLAIN requests:
1. INDEXES (ABI DB) 29.7%
2. FIND (ABI DB) 24.3%
3. Unrecognized term 13.5%
4. MAIL 10.8%
5. A060 2.7%
6. GUIDE (ABI DB) 2.7%
7. ABI/INFORM DB 2.7%
8. B042 2.7%
9. LOCATE (ARTICLE DBS) 2.7%
10. G445 2.7%
11. All others 5.4%
Ten most frequent HELP situations:
1. Help requested from SET DB command 17.0%
2. First word of command is invalid 15.1%
3. FIND command with invalid index name 15.1%
4. FIND command with zero results 15.1%
5. FIND command retrieves >1 book 5.7%
6. DISPLAY command - middle of >1 screen 5.7%
7. F/BR command with invalid search term 3.8%
8. 104 3.8%
9. 140 3.8%
10. DISPLAY command-first of >1 screen 3.8%
11. All others 11.3%
Ten most frequent SHOW requests:
1. HISTORY 100%
11. All others 0.0%
ABImm/dd abi MELVYL ABI DATABASE TELNET STATISTICS (weekly)