MELVYL ABI DATABASE TELNET STATISTICS
Time period: 02/01/01 through 02/28/01
1.0 SUMMARY STATISTICS
_______________________
1.1 Total sessions:
____________________
Zero results may indicate no access to the database
Location Library Remote Total
________ _______ ______ _____
Berkeley 23 299 322
Davis 76 1 77
Irvine 55 0 55
Los Angeles 6 137 143
Riverside 28 3 31
San Diego 21 24 45
San Francisco 52 0 52
Santa Barbara 14 10 24
Santa Cruz 9 3 12
Lawrence Berkeley 0 0 0
Lawrence Livermore 0 2 2
Los Alamos 0 0 0
Other - UC 0 6 6
Other-Network UC n/a 304 304
_______ ______ _____
284 789 1,073
Per hour usage:
Time Sessions Finds Records Displayed
__________ __________ __________ _________________
12-2 a.m. 14 67 980
2-4 a.m. 13 91 1,222
4-6 a.m. 18 97 970
6-8 a.m. 33 116 1,943
8-10 a.m. 123 321 3,481
10-12 a.m. 200 546 10,060
12-2 p.m. 162 441 4,404
2-4 p.m. 215 590 6,004
4-6 p.m. 150 416 3,657
6-8 p.m. 66 223 3,427
8-10 p.m. 56 188 43,046
10-12 p.m. 23 77 1,321
__________ __________ __________ _________________
Total: 1,073 3,173 80,515
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 82 825 907
Davis 156 2 158
Irvine 165 0 165
Los Angeles 9 463 472
Riverside 55 4 59
San Diego 76 85 161
San Francisco 246 0 246
Santa Barbara 43 49 92
Santa Cruz 16 16 32
Lawrence Berkeley 0 0 0
Lawrence Livermore 0 2 2
Los Alamos 0 0 0
Other - UC 1 23 24
Other-Network UC n/a 855 855
_______ ______ _____
849 2,324 3,173
1.3 Records displayed
______________________
Zero results may indicate no access to the database
Number of Records Displayed by location:
Location Library Remote Total
________ _______ ______ _____
Berkeley 755 53,163 53,918
Davis 1,267 50 1,317
Irvine 1,704 0 1,704
Los Angeles 118 8,284 8,402
Riverside 382 28 410
San Diego 304 991 1,295
San Francisco 2,905 0 2,905
Santa Barbara 311 515 826
Santa Cruz 58 340 398
Lawrence Berkeley 0 0 0
Lawrence Livermore 0 85 85
Los Alamos 0 0 0
Other - UC 0 488 488
Other-Network UC n/a 8,767 8,767
_______ ______ _____
7,804 72,711 80,515
1.4 Response time
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Search response time from receipt of command at
DLA until transmission of response:
Average in seconds 0.5
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) 10:41
Average session length (minutes:seconds) 14:30
Longest session recorded (minutes:seconds) 207:22
Average number of searches completed per session 2.9
Retrievals per search - median 5.0
Retrievals per search - average 939.3
Retrievals per search - standard deviation 9644.3
Percent of searches completed with 0 results 28.6%
Percent of searches entered that are long 2.8%
Percent of long searches completed
(includes partial results) 74.4%
Commands entered, by type, excluding errors:
Total Percentage
__________ __________
FIND 2,838 28.6%
DISPLAY (excluding automatic displays) 3,922 39.5%
BROWSE 7 0.1%
SELECT 0 0.0%
HELP 134 1.3%
EXPLAIN 169 1.7%
SET/RESET 490 4.9%
SHOW 39 0.4%
ADD ON (AND, OR, AND NOT) 335 3.4%
LOGON or LOGOFF 1,236 12.4%
COMMENT 0 0.0%
SAVE 497 5.0%
USE 3 0.0%
OTHER 274 2.8%
2.1 Article Text
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DISPLAY TEXT commands 371
TEXT included with CONTINUOUS, PRINT, CAPTURE, or SLOW 73
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 823 25.7% 202 24.5% 10 63.5 232.4
TITLE WORD 716 22.3% 311 43.4% 6 161.2 1139.9
EXACT TITLE 94 2.9% 35 37.2% 1 5.5 13.8
JOURNAL 237 7.4% 65 27.4% 47 1180.4 4476.4
EXACT JOURNAL 62 1.9% 21 33.9% 807 2756.5 5783.2
SUBJECT 163 5.1% 85 52.1% 384 12454.4 51619.2
EXACT SUBJECT 8 0.2% 2 25.0% 25 221.8 352.0
KEYWORD 812 25.3% 154 19.0% 56 2144.7 10141.3
PUB TYPE 14 0.4% 2 14.3% 177 574.6 886.9
DATE 76 2.4% 21 27.6% 7 80.4 415.6
ADDED 4 0.1% 0 0.0% 12,652 11877.5 1549.0
ARTICLE 0 0.0% 0 0.0% 0 0.0 0.0
LANGUAGE 5 0.2% 2 40.0% 182 134.0 101.0
GEOGRAPHIC NAME 0 0.0% 0 0.0% 0 0.0 0.0
SUBJ CATEGORY 1 0.0% 0 0.0% 1 1.0 0.0
COMPANY NAME 35 1.1% 6 17.1% 167 937.9 3205.2
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 0.0% 1 100% 0 0.0 0.0
PERIODICAL 84 2.6% 18 21.4% 5 22.8 63.4
EXACT PE 45 1.4% 2 4.4% 4 16.3 67.0
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 28 0.9% 5 17.9% 147 2310.8 4284.3
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 384 13.6% 117 30.5% 8 187.6 826.0
Single 2,433 86.4% 694 28.5% 19 1636.9 12920.6
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 7 100% 4 57.1% 1 1.3 0.6
EXACT SUBJECT 0 0.0% 0 0.0% 0 0.0 0.0
DISPLAY commands, by type, excluding automatic displays:
REVIEW 3.4%
SHORT 86.4%
LONG 1.2%
TAGS 0.0%
FIELDS 2.0%
BROWSE REVIEW 0.0%
BROWSE LONG 0.0%
PERIODICALS 4.5%
COMMENTS 0.0%
Other 2.5%
2.2 Error, EXPLAIN and HELP statistics
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Percent of commands that contained errors 8.6%
Ten most frequent errors:
1. NS command - no next screen 35.5%
2. First word of command is invalid 27.0%
3. FIND command with invalid index name 8.9%
4. DISPLAY command contains invalid word 5.1%
5. Valid command at an inappropriate time 2.9%
6. PS command - no previous screen 2.7%
7. Max. # of ports to a Z39 db are in use 1.8%
8. Search term missing from search command 1.2%
9. DISPLAY command-record numbers too large 1.1%
10. Index invalid in current database 1.1%
11. All others 12.8%
Ten most frequent EXPLAIN requests:
1. GUIDE (ABI DB) 26.0%
2. LOCATE (ARTICLE DBS) 11.8%
3. FIND (ABI DB) 10.7%
4. INDEXES (ABI DB) 8.3%
5. COMMANDS (ABI/PSY DBS) 7.7%
6. MAIL 5.3%
7. Unrecognized term 3.6%
8. ABI/INFORM DB 3.0%
9. DATABASES 2.4%
10. 3800 2.4%
11. All others 18.9%
Ten most frequent HELP situations:
1. Help requested from SET DB command 28.1%
2. First word of command is invalid 12.2%
3. FIND command with invalid index name 11.9%
4. FIND command with zero results 7.9%
5. DISPLAY command-first of >1 screen 7.6%
6. DISPLAY command - middle of >1 screen 5.6%
7. FIND command retrieves >1 book 4.3%
8. NS command - no next screen 2.6%
9. DISPLAY command-complete in one screen 2.3%
10. PS command - no previous screen 2.0%
11. All others 15.5%
Ten most frequent SHOW requests:
1. HISTORY 64.7%
2. SEARCH 17.6%
3. MAIL STATUS 8.8%
4. SETTINGS (ABI DB) 2.9%
5. ABI NEWS 2.9%
6. GLOSSARY 2.9%
11. All others 0.0%
ABImm/dd abi MELVYL ABI DATABASE TELNET STATISTICS (weekly)