MELVYL ABI DATABASE TELNET STATISTICS
Time period: 02/10/01 through 02/16/01
1.0 SUMMARY STATISTICS
_______________________
1.1 Total sessions:
____________________
Zero results may indicate no access to the database
Location Library Remote Total
________ _______ ______ _____
Berkeley 11 73 84
Davis 9 1 10
Irvine 13 0 13
Los Angeles 1 33 34
Riverside 6 1 7
San Diego 4 11 15
San Francisco 12 0 12
Santa Barbara 7 1 8
Santa Cruz 4 2 6
Lawrence Berkeley 0 0 0
Lawrence Livermore 0 1 1
Los Alamos 0 0 0
Other - UC 0 3 3
Other-Network UC n/a 79 79
_______ ______ _____
67 205 272
Per hour usage:
Time Sessions Finds Records Displayed
__________ __________ __________ _________________
12-2 a.m. 5 45 667
2-4 a.m. 3 4 224
4-6 a.m. 4 34 204
6-8 a.m. 5 16 65
8-10 a.m. 22 44 465
10-12 a.m. 48 118 2,401
12-2 p.m. 41 96 1,517
2-4 p.m. 47 118 1,377
4-6 p.m. 49 157 1,247
6-8 p.m. 23 82 1,256
8-10 p.m. 15 62 40,559
10-12 p.m. 10 47 619
__________ __________ __________ _________________
Total: 272 823 50,601
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 62 152 214
Davis 16 2 18
Irvine 40 0 40
Los Angeles 1 69 70
Riverside 11 1 12
San Diego 15 25 40
San Francisco 85 0 85
Santa Barbara 22 28 50
Santa Cruz 7 11 18
Lawrence Berkeley 0 0 0
Lawrence Livermore 0 1 1
Los Alamos 0 0 0
Other - UC 0 17 17
Other-Network UC n/a 258 258
_______ ______ _____
259 564 823
1.3 Records displayed
______________________
Zero results may indicate no access to the database
Number of Records Displayed by location:
Location Library Remote Total
________ _______ ______ _____
Berkeley 546 41,691 42,237
Davis 71 50 121
Irvine 446 0 446
Los Angeles 5 1,904 1,909
Riverside 84 0 84
San Diego 111 239 350
San Francisco 1,554 0 1,554
Santa Barbara 193 197 390
Santa Cruz 32 28 60
Lawrence Berkeley 0 0 0
Lawrence Livermore 0 0 0
Los Alamos 0 0 0
Other - UC 0 389 389
Other-Network UC n/a 3,061 3,061
_______ ______ _____
3,042 47,559 50,601
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 1.5
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) 11:00
Average session length (minutes:seconds) 13:49
Longest session recorded (minutes:seconds) 97:55
Average number of searches completed per session 3.0
Retrievals per search - median 7.0
Retrievals per search - average 1725.8
Retrievals per search - standard deviation 16359
Percent of searches completed with 0 results 25.6%
Percent of searches entered that are long 2.6%
Percent of long searches completed
(includes partial results) 71.4%
Commands entered, by type, excluding errors:
Total Percentage
__________ __________
FIND 708 26.2%
DISPLAY (excluding automatic displays) 1,191 44.1%
BROWSE 1 0.0%
SELECT 0 0.0%
HELP 20 0.7%
EXPLAIN 32 1.2%
SET/RESET 126 4.7%
SHOW 12 0.4%
ADD ON (AND, OR, AND NOT) 115 4.3%
LOGON or LOGOFF 308 11.4%
COMMENT 0 0.0%
SAVE 116 4.3%
USE 0 0.0%
OTHER 70 2.6%
2.1 Article Text
_________________
DISPLAY TEXT commands 105
TEXT included with CONTINUOUS, PRINT, CAPTURE, or SLOW 17
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 217 27.7% 48 22.1% 12 48.5 181.7
TITLE WORD 196 25.0% 80 40.8% 8 90.3 342.6
EXACT TITLE 15 1.9% 8 53.3% 7 6.9 5.8
JOURNAL 42 5.4% 13 30.9% 82 2617.2 7487.3
EXACT JOURNAL 15 1.9% 3 20.0% 1,901 3257.8 3684.6
SUBJECT 50 6.4% 19 38.0% 99 17792.1 76644.6
EXACT SUBJECT 4 0.5% 1 25.0% 25 142.0 203.5
KEYWORD 180 23.0% 29 16.1% 113 3964.8 13881.0
PUB TYPE 5 0.6% 0 0.0% 45 648.0 1364.7
DATE 15 1.9% 1 6.7% 6 242.1 819.9
ADDED 4 0.5% 0 0.0% 12,652 11877.5 1549.0
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 2 0.3% 1 50.0% 215 215.0 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 18 2.3% 3 16.7% 3 22.4 62.9
EXACT PE 11 1.4% 0 0.0% 3 4.5 4.1
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 10 1.3% 2 20.0% 492 4844.5 6394.6
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 80 11.4% 22 27.5% 13 213.8 755.7
Single 622 88.6% 164 26.4% 24 2954.2 21759.8
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% 1 100% 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 4.0%
SHORT 86.3%
LONG 1.1%
TAGS 0.0%
FIELDS 2.4%
BROWSE REVIEW 0.0%
BROWSE LONG 0.0%
PERIODICALS 3.2%
COMMENTS 0.0%
Other 3.1%
2.2 Error, EXPLAIN and HELP statistics
_______________________________________
Percent of commands that contained errors 7.6%
Ten most frequent errors:
1. NS command - no next screen 48.0%
2. First word of command is invalid 19.7%
3. DISPLAY command contains invalid word 7.2%
4. FIND command with invalid index name 5.4%
5. PS command - no previous screen 3.1%
6. DISPLAY command-record numbers too large 1.8%
7. Max. # of ports to a Z39 db are in use 1.8%
8. Valid command at an inappropriate time 1.3%
9. D LIST command issued; no list exists 1.3%
10. Search term missing from search command 0.9%
11. All others 9.4%
Ten most frequent EXPLAIN requests:
1. GUIDE (ABI DB) 37.5%
2. LOCATE (ARTICLE DBS) 21.9%
3. MAIL 6.3%
4. FULL TEXT 3.1%
5. ABI/INFORM DB 3.1%
6. FIND (ABI DB) 3.1%
7. COMMANDS (ABI/PSY DBS) 3.1%
8. DATE (ABI DB) 3.1%
9. PUBLICATION TYPES (ABI DB) 3.1%
10. REQUEST 3.1%
11. All others 12.5%
Ten most frequent HELP situations:
1. Help requested from SET DB command 30.8%
2. DISPLAY command-first of >1 screen 17.3%
3. FIND command retrieves >1 book 9.6%
4. FIND command with zero results 7.7%
5. First word of command is invalid 5.8%
6. DISPLAY command - middle of >1 screen 5.8%
7. PS command - no previous screen 3.8%
8. DISPLAY command-complete in one screen 3.8%
9. MAIL command entered w/o email address 3.8%
10. DISPLAY command contains invalid word 1.9%
11. All others 9.6%
Ten most frequent SHOW requests:
1. HISTORY 66.7%
2. ABI NEWS 11.1%
3. GLOSSARY 11.1%
4. MAIL STATUS 11.1%
11. All others 0.0%
ABImm/dd abi MELVYL ABI DATABASE TELNET STATISTICS (weekly)