MELVYL ABI DATABASE TELNET STATISTICS
Time period: 12/02/00 through 12/08/00
1.0 SUMMARY STATISTICS
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1.1 Total sessions:
____________________
Zero results may indicate no access to the database
Location Library Remote Total
________ _______ ______ _____
Berkeley 4 61 65
Davis 15 1 16
Irvine 14 0 14
Los Angeles 0 31 31
Riverside 8 0 8
San Diego 4 12 16
San Francisco 9 0 9
Santa Barbara 4 5 9
Santa Cruz 1 0 1
Lawrence Berkeley 0 0 0
Lawrence Livermore 0 1 1
Los Alamos 0 0 0
Other - UC 0 2 2
Other-Network UC n/a 79 79
_______ ______ _____
59 192 251
Per hour usage:
Time Sessions Finds Records Displayed
__________ __________ __________ _________________
12-2 a.m. 0 0 0
2-4 a.m. 3 26 794
4-6 a.m. 1 7 121
6-8 a.m. 3 5 35
8-10 a.m. 31 83 875
10-12 a.m. 55 180 1,699
12-2 p.m. 36 166 1,584
2-4 p.m. 45 125 1,788
4-6 p.m. 30 107 2,171
6-8 p.m. 15 36 841
8-10 p.m. 23 65 2,311
10-12 p.m. 9 27 1,652
__________ __________ __________ _________________
Total: 251 827 13,871
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 12 272 284
Davis 48 3 51
Irvine 29 0 29
Los Angeles 0 114 114
Riverside 9 0 9
San Diego 28 90 118
San Francisco 25 0 25
Santa Barbara 8 3 11
Santa Cruz 1 0 1
Lawrence Berkeley 0 0 0
Lawrence Livermore 0 3 3
Los Alamos 0 0 0
Other - UC 0 4 4
Other-Network UC n/a 178 178
_______ ______ _____
160 667 827
1.3 Records displayed
______________________
Zero results may indicate no access to the database
Number of Records Displayed by location:
Location Library Remote Total
________ _______ ______ _____
Berkeley 38 3,219 3,257
Davis 376 23 399
Irvine 227 0 227
Los Angeles 0 4,535 4,535
Riverside 74 0 74
San Diego 37 1,565 1,602
San Francisco 490 0 490
Santa Barbara 10 30 40
Santa Cruz 14 0 14
Lawrence Berkeley 0 0 0
Lawrence Livermore 0 106 106
Los Alamos 0 0 0
Other - UC 0 2 2
Other-Network UC n/a 3,125 3,125
_______ ______ _____
1,266 12,605 13,871
1.4 Response time
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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
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Median session length (minutes:seconds) 10:09
Average session length (minutes:seconds) 15:54
Longest session recorded (minutes:seconds) 98:37
Average number of searches completed per session 3.3
Retrievals per search - median 6.0
Retrievals per search - average 1051.4
Retrievals per search - standard deviation 6158.0
Percent of searches completed with 0 results 27.5%
Percent of searches entered that are long 2.7%
Percent of long searches completed
(includes partial results) 81.8%
Commands entered, by type, excluding errors:
Total Percentage
__________ __________
FIND 753 25.3%
DISPLAY (excluding automatic displays) 1,325 44.6%
BROWSE 2 0.1%
SELECT 0 0.0%
HELP 33 1.1%
EXPLAIN 31 1.0%
SET/RESET 99 3.3%
SHOW 12 0.4%
ADD ON (AND, OR, AND NOT) 74 2.5%
LOGON or LOGOFF 316 10.6%
COMMENT 0 0.0%
SAVE 221 7.4%
USE 1 0.0%
OTHER 106 3.6%
2.1 Article Text
_________________
DISPLAY TEXT commands 228
TEXT included with CONTINUOUS, PRINT, CAPTURE, or SLOW 25
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 174 19.3% 45 25.9% 12 84.8 382.3
TITLE WORD 233 25.9% 79 33.9% 9 53.2 121.1
EXACT TITLE 7 0.8% 4 57.1% 3 3.3 2.5
JOURNAL 59 6.6% 17 28.8% 62 2979.2 7316.1
EXACT JOURNAL 17 1.9% 6 35.3% 2,749 9458.3 13562.6
SUBJECT 70 7.8% 37 52.9% 80 4575.5 12582.7
EXACT SUBJECT 15 1.7% 7 46.7% 322 3200.5 5742.5
KEYWORD 197 21.9% 29 14.7% 83 2157.9 10510.2
PUB TYPE 8 0.9% 2 25.0% 354 3960.3 9104.2
DATE 67 7.4% 16 23.9% 18 677.8 3508.3
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 9 1.0% 1 11.1% 322 3856.9 8617.3
COMPANY NAME 23 2.6% 6 26.1% 39 365.4 1112.9
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 1 0.1% 1 100% 0 0.0 0.0
PERIODICAL 4 0.4% 0 0.0% 3 3.8 3.6
EXACT PE 2 0.2% 0 0.0% 5 5.0 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 14 1.6% 3 21.4% 7 103.5 256.0
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 117 15.6% 29 24.8% 18 455.1 2676.9
Single 634 84.4% 183 28.9% 24 1781.7 8138.7
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 2 100% 1 50.0% 2 2.0 0.0
EXACT SUBJECT 0 0.0% 0 0.0% 0 0.0 0.0
DISPLAY commands, by type, excluding automatic displays:
REVIEW 4.8%
SHORT 86.5%
LONG 1.5%
TAGS 0.0%
FIELDS 2.4%
BROWSE REVIEW 0.1%
BROWSE LONG 0.0%
PERIODICALS 1.1%
COMMENTS 0.0%
Other 3.7%
2.2 Error, EXPLAIN and HELP statistics
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Percent of commands that contained errors 7.6%
Ten most frequent errors:
1. First word of command is invalid 30.9%
2. NS command - no next screen 29.2%
3. FIND command with invalid index name 7.0%
4. Valid command at an inappropriate time 3.3%
5. DISPLAY command contains invalid word 3.3%
6. PS command - no previous screen 3.3%
7. SHOW command contains invalid word 2.9%
8. DISPLAY command - no FIND results 2.5%
9. Max. # of ports to a Z39 db are in use 2.1%
10. DATE search with unrecognized word 1.6%
11. All others 14.0%
Ten most frequent EXPLAIN requests:
1. GUIDE (ABI DB) 32.3%
2. SUBJECT CATEGORIES (ABI DB) 16.1%
3. ABI/INFORM DB 12.9%
4. FIND (ABI DB) 6.5%
5. DATE (ABI DB) 6.5%
6. INDEXES (ABI DB) 3.2%
7. B042 3.2%
8. DISPLAY (ABI DB) 3.2%
9. B154 3.2%
10. LOCATE (ARTICLE DBS) 3.2%
11. All others 9.7%
Ten most frequent HELP situations:
1. Help requested from SET DB command 29.7%
2. First word of command is invalid 23.4%
3. FIND command with zero results 9.4%
4. PS command - no previous screen 7.8%
5. DISPLAY command-complete in one screen 4.7%
6. DISPLAY command - middle of >1 screen 4.7%
7. NS command - no next screen 3.1%
8. FIND command with invalid index name 3.1%
9. 931 3.1%
10. SHOW command with invalid modifier 1.6%
11. All others 9.4%
Ten most frequent SHOW requests:
1. HISTORY 72.7%
2. SEARCH 18.2%
3. ABI NEWS 9.1%
11. All others 0.0%
ABImm/dd abi MELVYL ABI DATABASE TELNET STATISTICS (weekly)