MELVYL ABI DATABASE TELNET STATISTICS
Time period: 03/10/01 through 03/16/01
1.0 SUMMARY STATISTICS
_______________________
1.1 Total sessions:
____________________
Zero results may indicate no access to the database
Location Library Remote Total
________ _______ ______ _____
Berkeley 6 69 75
Davis 18 2 20
Irvine 24 0 24
Los Angeles 1 29 30
Riverside 6 0 6
San Diego 10 6 16
San Francisco 10 0 10
Santa Barbara 2 7 9
Santa Cruz 2 1 3
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 75 75
_______ ______ _____
79 191 270
Per hour usage:
Time Sessions Finds Records Displayed
__________ __________ __________ _________________
12-2 a.m. 6 11 134
2-4 a.m. 9 21 271
4-6 a.m. 1 12 73
6-8 a.m. 8 16 345
8-10 a.m. 15 47 960
10-12 a.m. 36 136 2,034
12-2 p.m. 63 201 2,896
2-4 p.m. 47 163 1,851
4-6 p.m. 30 84 1,201
6-8 p.m. 22 68 664
8-10 p.m. 17 48 1,026
10-12 p.m. 16 66 1,474
__________ __________ __________ _________________
Total: 270 873 12,929
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 29 250 279
Davis 27 10 37
Irvine 61 0 61
Los Angeles 2 116 118
Riverside 27 0 27
San Diego 21 26 47
San Francisco 16 0 16
Santa Barbara 7 7 14
Santa Cruz 2 3 5
Lawrence Berkeley 0 0 0
Lawrence Livermore 0 4 4
Los Alamos 0 0 0
Other - UC 0 0 0
Other-Network UC n/a 265 265
_______ ______ _____
192 681 873
1.3 Records displayed
______________________
Zero results may indicate no access to the database
Number of Records Displayed by location:
Location Library Remote Total
________ _______ ______ _____
Berkeley 90 4,013 4,103
Davis 174 42 216
Irvine 911 0 911
Los Angeles 1 2,567 2,568
Riverside 296 0 296
San Diego 94 99 193
San Francisco 144 0 144
Santa Barbara 36 65 101
Santa Cruz 21 3 24
Lawrence Berkeley 0 0 0
Lawrence Livermore 0 82 82
Los Alamos 0 0 0
Other - UC 0 0 0
Other-Network UC n/a 4,291 4,291
_______ ______ _____
1,767 11,162 12,929
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 1.3
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
_________________________________________
Median session length (minutes:seconds) 12:23
Average session length (minutes:seconds) 16:41
Longest session recorded (minutes:seconds) 294:35
Average number of searches completed per session 3.2
Retrievals per search - median 11.0
Retrievals per search - average 1993.8
Retrievals per search - standard deviation 14319
Percent of searches completed with 0 results 23.0%
Percent of searches entered that are long 1.7%
Percent of long searches completed
(includes partial results) 60.0%
Commands entered, by type, excluding errors:
Total Percentage
__________ __________
FIND 797 23.8%
DISPLAY (excluding automatic displays) 1,822 54.3%
BROWSE 8 0.2%
SELECT 1 0.0%
HELP 39 1.2%
EXPLAIN 35 1.0%
SET/RESET 130 3.9%
SHOW 10 0.3%
ADD ON (AND, OR, AND NOT) 76 2.3%
LOGON or LOGOFF 324 9.7%
COMMENT 0 0.0%
SAVE 33 1.0%
USE 0 0.0%
OTHER 87 2.6%
2.1 Article Text
_________________
DISPLAY TEXT commands 354
TEXT included with CONTINUOUS, PRINT, CAPTURE, or SLOW 48
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 161 18.9% 31 19.3% 19 42.0 87.2
TITLE WORD 160 18.7% 64 40.0% 7 41.9 117.5
EXACT TITLE 15 1.8% 9 60.0% 2 14.0 29.9
JOURNAL 33 3.9% 13 39.4% 655 5136.3 11593.7
EXACT JOURNAL 17 2.0% 7 41.2% 139 1071.2 1568.5
SUBJECT 98 11.5% 42 42.9% 850 8832.1 23066.7
EXACT SUBJECT 24 2.8% 2 8.3% 339 2591.0 5481.0
KEYWORD 250 29.3% 34 13.6% 90 4336.7 25309.8
PUB TYPE 5 0.6% 1 20.0% 30 977.5 1897.7
DATE 26 3.0% 9 34.6% 49 1868.7 4361.3
ADDED 6 0.7% 0 0.0% 13,241 12157.3 1751.3
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 7 0.8% 0 0.0% 206 389.3 451.7
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 34 4.0% 3 8.8% 4 7.6 9.3
EXACT PE 16 1.9% 1 6.3% 4 7.7 7.6
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 2 0.2% 0 0.0% 497 496.5 666.8
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 64 8.1% 23 35.9% 6 952.7 2956.2
Single 725 91.9% 170 23.4% 33 2965.6 17770.4
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 7 87.5% 2 28.6% 5 5.6 2.3
EXACT SUBJECT 1 12.5% 0 0.0% 1 1.0 0.0
DISPLAY commands, by type, excluding automatic displays:
REVIEW 3.2%
SHORT 87.2%
LONG 0.5%
TAGS 0.0%
FIELDS 2.1%
BROWSE REVIEW 0.3%
BROWSE LONG 0.0%
PERIODICALS 4.1%
COMMENTS 0.0%
Other 2.7%
2.2 Error, EXPLAIN and HELP statistics
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Percent of commands that contained errors 7.7%
Ten most frequent errors:
1. First word of command is invalid 33.1%
2. NS command - no next screen 30.6%
3. DISPLAY command contains invalid word 6.8%
4. FIND command with invalid index name 6.8%
5. PS command - no previous screen 2.9%
6. Valid command at an inappropriate time 2.5%
7. DISPLAY command-record numbers too large 2.2%
8. Add-on search, no index name after verb 1.4%
9. BROWSE command with invalid index name 1.4%
10. DISPLAY command - no FIND results 1.1%
11. All others 11.2%
Ten most frequent EXPLAIN requests:
1. GUIDE (ABI DB) 22.9%
2. FIND (ABI DB) 14.3%
3. INDEXES (ABI DB) 8.6%
4. COMMANDS (ABI/PSY DBS) 5.7%
5. PUBLICATION TYPES (ABI DB) 5.7%
6. B089 5.7%
7. MAIL 5.7%
8. LOCATE (ARTICLE DBS) 5.7%
9. Unrecognized term 5.7%
10. MAGS TEXT 2.9%
11. All others 17.1%
Ten most frequent HELP situations:
1. Help requested from SET DB command 35.1%
2. First word of command is invalid 8.1%
3. PS command - no previous screen 8.1%
4. FIND command with invalid index name 8.1%
5. DISPLAY command-first of >1 screen 8.1%
6. DISPLAY command - middle of >1 screen 5.4%
7. MAIL command entered w/o email address 4.1%
8. Add-on without index name after verb 2.7%
9. 160 2.7%
10. FIND command with zero results 2.7%
11. All others 14.9%
Ten most frequent SHOW requests:
1. HISTORY 75.0%
2. SEARCH 25.0%
11. All others 0.0%
ABImm/dd abi MELVYL ABI DATABASE TELNET STATISTICS (weekly)