MELVYL ABI DATABASE TELNET STATISTICS
Time period: 12/01/99 through 12/31/99
1.0 SUMMARY STATISTICS
_______________________
1.1 Total sessions:
____________________
Zero results may indicate no access to the database
Location Library Remote Total
________ _______ ______ _____
Berkeley 32 419 451
Davis 117 3 120
Irvine 100 0 100
Los Angeles 26 166 192
Riverside 18 14 32
San Diego 24 49 73
San Francisco 54 0 54
Santa Barbara 31 61 92
Santa Cruz 35 35 70
Lawrence Berkeley 0 0 0
Lawrence Livermore 0 6 6
Los Alamos 0 0 0
Other - UC 59 13 72
Other-Network UC n/a 264 264
_______ ______ _____
496 1,030 1,526
Per hour usage:
Time Sessions Finds Records Displayed
__________ __________ __________ _________________
12-2 a.m. 41 140 1,581
2-4 a.m. 13 53 842
4-6 a.m. 20 89 1,170
6-8 a.m. 23 63 1,090
8-10 a.m. 132 369 5,402
10-12 a.m. 263 674 6,360
12-2 p.m. 300 846 10,706
2-4 p.m. 321 1,037 11,768
4-6 p.m. 216 795 11,924
6-8 p.m. 86 392 3,436
8-10 p.m. 65 218 2,401
10-12 p.m. 46 163 2,793
__________ __________ __________ _________________
Total: 1,526 4,839 59,473
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 143 1,311 1,454
Davis 363 4 367
Irvine 330 0 330
Los Angeles 64 542 606
Riverside 39 58 97
San Diego 108 158 266
San Francisco 196 0 196
Santa Barbara 46 143 189
Santa Cruz 148 313 461
Lawrence Berkeley 0 0 0
Lawrence Livermore 0 12 12
Los Alamos 0 0 0
Other - UC 127 19 146
Other-Network UC n/a 715 715
_______ ______ _____
1,564 3,275 4,839
1.3 Records displayed
______________________
Zero results may indicate no access to the database
Number of Records Displayed by location:
Location Library Remote Total
________ _______ ______ _____
Berkeley 1,617 15,052 16,669
Davis 2,307 25 2,332
Irvine 6,979 0 6,979
Los Angeles 522 8,360 8,882
Riverside 204 1,193 1,397
San Diego 717 2,143 2,860
San Francisco 2,796 0 2,796
Santa Barbara 156 1,568 1,724
Santa Cruz 2,224 1,969 4,193
Lawrence Berkeley 0 0 0
Lawrence Livermore 0 63 63
Los Alamos 0 0 0
Other - UC 1,362 282 1,644
Other-Network UC n/a 9,934 9,934
_______ ______ _____
18,884 40,589 59,473
1.4 Response time
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Search response time from receipt of command at
DLA until transmission of response:
Average in seconds 0.7
Standard deviation in seconds 1.8
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
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Median session length (minutes:seconds) 7:44
Average session length (minutes:seconds) 13:09
Longest session recorded (minutes:seconds) 275:15
Average number of searches completed per session 3.1
Retrievals per search - median 9.0
Retrievals per search - average 1331.7
Retrievals per search - standard deviation 12212
Percent of searches completed with 0 results 26.9%
Percent of searches entered that are long 2.4%
Percent of long searches completed
(includes partial results) 54.4%
Commands entered, by type, excluding errors:
Total Percentage
__________ __________
FIND 4,181 25.0%
DISPLAY (excluding automatic displays) 7,558 45.3%
BROWSE 54 0.3%
SELECT 8 0.0%
HELP 224 1.3%
EXPLAIN 298 1.8%
SET/RESET 603 3.6%
SHOW 56 0.3%
ADD ON (AND, OR, AND NOT) 656 3.9%
LOGON or LOGOFF 1,967 11.8%
COMMENT 0 0.0%
SAVE 596 3.6%
USE 4 0.0%
OTHER 559 3.3%
2.1 Article Text
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DISPLAY TEXT commands 800
TEXT included with CONTINUOUS, PRINT, CAPTURE, or SLOW 181
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 1,123 24.8% 329 29.3% 13 63.4 248.9
TITLE WORD 868 19.2% 335 38.6% 8 166.8 1470.9
EXACT TITLE 51 1.1% 20 39.2% 1 58.8 260.8
JOURNAL 236 5.2% 99 41.9% 414 5032.1 21404.0
EXACT JOURNAL 176 3.9% 49 27.8% 2,209 6633.3 9241.9
SUBJECT 289 6.4% 149 51.6% 174 6550.5 24999.8
EXACT SUBJECT 83 1.8% 8 9.6% 248 4079.3 10003.0
KEYWORD 1,322 29.2% 213 16.1% 76 2464.5 21275.5
PUB TYPE 53 1.2% 32 60.4% 31 9336.2 17119.9
DATE 105 2.3% 25 23.8% 14 38.2 62.0
ADDED 6 0.1% 0 0.0% 8,837 7943.7 1383.9
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 1 0.0% 0 0.0% 80,830 80830.0 0.0
COMPANY NAME 42 0.9% 12 28.6% 47 624.2 987.0
EX COMPANY NAME 4 0.1% 1 25.0% 32 30.0 18.1
DUNS 1 0.0% 0 0.0% 15 15.0 0.0
TICKER SYMBOL 7 0.2% 5 71.4% 7,675 7675.0 10784.8
ID NUMBER 8 0.2% 5 62.5% 1 1.0 0.0
ISSN 9 0.2% 3 33.3% 377 661.7 854.8
PERIODICAL 60 1.3% 10 16.7% 6 40.4 135.8
EXACT PE 30 0.7% 1 3.3% 4 30.0 71.2
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 47 1.0% 16 34.0% 26 1861.6 4129.8
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 365 8.8% 123 33.7% 11 199.2 1274.2
Single 3,768 91.2% 1,058 28.1% 34 2198.8 16014.5
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 53 98.1% 21 39.6% 1 5.0 13.0
EXACT SUBJECT 1 1.9% 1 100% 0 0.0 0.0
DISPLAY commands, by type, excluding automatic displays:
REVIEW 3.2%
SHORT 87.2%
LONG 1.1%
TAGS 0.0%
FIELDS 3.4%
BROWSE REVIEW 0.2%
BROWSE LONG 0.0%
PERIODICALS 1.5%
COMMENTS 0.0%
Other 3.3%
2.2 Error, EXPLAIN and HELP statistics
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Percent of commands that contained errors 9.5%
Ten most frequent errors:
1. First word of command is invalid 36.5%
2. NS command - no next screen 28.0%
3. FIND command with invalid index name 8.6%
4. DISPLAY command contains invalid word 4.5%
5. PS command - no previous screen 2.3%
6. Search term missing from search command 2.2%
7. Valid command at an inappropriate time 1.6%
8. DISPLAY command-record numbers too large 1.1%
9. Add-on search, no index name after verb 1.1%
10. Index invalid in current database 1.1%
11. All others 13.1%
Ten most frequent EXPLAIN requests:
1. GUIDE (ABI DB) 19.8%
2. INDEXES (ABI DB) 17.4%
3. FIND (ABI DB) 13.8%
4. Unrecognized term 6.0%
5. B154 5.0%
6. ABI/INFORM DB 4.0%
7. PUBLICATION TYPES (ABI DB) 3.7%
8. LOCATE (ARTICLE DBS) 3.7%
9. MAIL 3.0%
10. COMMANDS (ABI/PSY DBS) 2.7%
11. All others 20.8%
Ten most frequent HELP situations:
1. Help requested from SET DB command 32.8%
2. First word of command is invalid 14.6%
3. FIND command with invalid index name 8.8%
4. FIND command with zero results 7.1%
5. DISPLAY command-first of >1 screen 3.8%
6. DISPLAY command-complete in one screen 3.4%
7. FIND command retrieves >1 book 3.1%
8. NS command - no next screen 2.9%
9. Valid CDL technical command issued 2.1%
10. DISPLAY command - middle of >1 screen 2.1%
11. All others 19.3%
Ten most frequent SHOW requests:
1. HISTORY 66.7%
2. SEARCH 9.3%
3. GLOSSARY 5.6%
4. ABI NEWS 3.7%
5. MAIL SETTINGS 3.7%
6. MAIL STATUS 3.7%
7. PUBLICATION TYPES (ABI DB) 1.9%
8. SETTINGS (ABI DB) 1.9%
9. SYSTEM NEWS 1.9%
10. DISPLAY 1.9%
11. All others 0.0%
ABImm/dd abi MELVYL ABI DATABASE TELNET STATISTICS (weekly)