MELVYL ABI DATABASE TELNET STATISTICS
Time period: 02/23/02 through 03/01/02
1.0 SUMMARY STATISTICS
_______________________
1.1 Total sessions:
____________________
Zero results may indicate no access to the database
Location Library Remote Total
________ _______ ______ _____
Berkeley 2 42 44
Davis 16 0 16
Irvine 2 0 2
Los Angeles 0 20 20
Riverside 4 2 6
San Diego 5 12 17
San Francisco 0 0 0
Santa Barbara 4 0 4
Santa Cruz 2 0 2
Lawrence Berkeley 0 0 0
Lawrence Livermore 0 2 2
Los Alamos 0 0 0
Other - UC 0 10 10
Other-Network UC n/a 40 40
_______ ______ _____
35 128 163
Per hour usage:
Time Sessions Finds Records Displayed
__________ __________ __________ _________________
12-2 a.m. 1 1 23
2-4 a.m. 0 0 0
4-6 a.m. 2 2 12
6-8 a.m. 3 4 32
8-10 a.m. 18 55 266
10-12 a.m. 32 70 664
12-2 p.m. 35 98 1,469
2-4 p.m. 27 58 943
4-6 p.m. 22 64 720
6-8 p.m. 6 9 357
8-10 p.m. 2 1 29
10-12 p.m. 15 110 262
__________ __________ __________ _________________
Total: 163 472 4,777
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 5 165 170
Davis 50 0 50
Irvine 5 0 5
Los Angeles 0 56 56
Riverside 4 6 10
San Diego 5 40 45
San Francisco 0 0 0
Santa Barbara 2 0 2
Santa Cruz 1 0 1
Lawrence Berkeley 0 0 0
Lawrence Livermore 0 4 4
Los Alamos 0 0 0
Other - UC 0 29 29
Other-Network UC n/a 100 100
_______ ______ _____
72 400 472
1.3 Records displayed
______________________
Zero results may indicate no access to the database
Number of Records Displayed by location:
Location Library Remote Total
________ _______ ______ _____
Berkeley 35 1,087 1,122
Davis 198 0 198
Irvine 49 0 49
Los Angeles 0 510 510
Riverside 20 70 90
San Diego 4 84 88
San Francisco 0 0 0
Santa Barbara 0 0 0
Santa Cruz 0 0 0
Lawrence Berkeley 0 0 0
Lawrence Livermore 0 553 553
Los Alamos 0 0 0
Other - UC 0 104 104
Other-Network UC n/a 2,063 2,063
_______ ______ _____
306 4,471 4,777
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 0.8
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) 6:28
Average session length (minutes:seconds) 13:39
Longest session recorded (minutes:seconds) 117:57
Average number of searches completed per session 2.9
Retrievals per search - median 2.0
Retrievals per search - average 851.6
Retrievals per search - standard deviation 6037.5
Percent of searches completed with 0 results 41.9%
Percent of searches entered that are long 2.5%
Percent of long searches completed
(includes partial results) 83.3%
Commands entered, by type, excluding errors:
Total Percentage
__________ __________
FIND 419 28.1%
DISPLAY (excluding automatic displays) 594 39.9%
BROWSE 0 0.0%
SELECT 0 0.0%
HELP 10 0.7%
EXPLAIN 20 1.3%
SET/RESET 67 4.5%
SHOW 8 0.5%
ADD ON (AND, OR, AND NOT) 53 3.6%
LOGON or LOGOFF 197 13.2%
COMMENT 0 0.0%
SAVE 71 4.8%
USE 0 0.0%
OTHER 50 3.4%
2.1 Article Text
_________________
DISPLAY TEXT commands 54
TEXT included with CONTINUOUS, PRINT, CAPTURE, or SLOW 5
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 176 33.1% 109 61.9% 6 41.4 86.0
TITLE WORD 60 11.3% 20 33.3% 14 58.9 89.2
EXACT TITLE 6 1.1% 3 50.0% 1 1.0 0.0
JOURNAL 18 3.4% 10 55.6% 480 1841.8 2410.1
EXACT JOURNAL 11 2.1% 6 54.5% 257 2378.0 4167.0
SUBJECT 23 4.3% 12 52.2% 51 1304.1 4053.6
EXACT SUBJECT 2 0.4% 2 100% 0 0.0 0.0
KEYWORD 114 21.5% 18 15.8% 74 3555.3 12913.2
PUB TYPE 2 0.4% 0 0.0% 20 19.5 14.8
DATE 14 2.6% 4 28.6% 48 57.9 64.2
ADDED 84 15.8% 84 100% 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 1 0.2% 0 0.0% 929 929.0 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 0 0.0% 0 0.0% 0 0.0 0.0
ISSN 0 0.0% 0 0.0% 0 0.0 0.0
PERIODICAL 14 2.6% 2 14.3% 5 28.3 61.4
EXACT PE 4 0.8% 1 25.0% 7 8.0 7.5
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 0.4% 1 50.0% 1,670 1670.0 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 112 26.8% 89 79.5% 12 111.0 343.9
Single 306 73.2% 93 30.4% 28 1811.7 8876.3
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 1.4%
SHORT 85.8%
LONG 1.0%
TAGS 0.0%
FIELDS 6.7%
BROWSE REVIEW 0.0%
BROWSE LONG 0.0%
PERIODICALS 3.6%
COMMENTS 0.0%
Other 1.5%
2.2 Error, EXPLAIN and HELP statistics
_______________________________________
Percent of commands that contained errors 12.5%
Ten most frequent errors:
1. DISPLAY command - no FIND results 40.6%
2. NS command - no next screen 22.2%
3. First word of command is invalid 13.7%
4. FIND command with invalid index name 6.6%
5. Add-on search, no index name after verb 2.8%
6. PS command - no previous screen 2.4%
7. DISPLAY command-record numbers too large 1.9%
8. DISPLAY command contains invalid word 1.9%
9. Valid command at an inappropriate time 0.5%
10. Invalid SET DATABASE command issued 0.5%
11. All others 7.1%
Ten most frequent EXPLAIN requests:
1. GUIDE (ABI DB) 25.0%
2. ABI/INFORM DB 15.0%
3. INDEXES (ABI DB) 15.0%
4. LOCATE (ARTICLE DBS) 10.0%
5. MAGS DATABASE 5.0%
6. MAGS TEXT 5.0%
7. FIND (ABI DB) 5.0%
8. 1212 5.0%
9. 1223 5.0%
10. 1242 5.0%
11. All others 5.0%
Ten most frequent HELP situations:
1. Help requested from SET DB command 33.3%
2. FIND command with zero results 16.7%
3. First word of command is invalid 13.3%
4. PS command - no previous screen 10.0%
5. FIND command with invalid index name 6.7%
6. Add-on without index name after verb 6.7%
7. MELVYL system could not process command 3.3%
8. FIND command retrieves >1 book 3.3%
9. DISPLAY command-complete in one screen 3.3%
10. DISPLAY command-first of >1 screen 3.3%
11. All others 0.0%
Ten most frequent SHOW requests:
1. HISTORY 87.5%
2. ABI NEWS 12.5%
11. All others 0.0%
ABImm/dd abi MELVYL ABI DATABASE TELNET STATISTICS (weekly)