MELVYL BIOSIS DATABASES TELNET STATISTICS
Time period: 08/18/01 through 08/24/01
1.0 SUMMARY STATISTICS
_______________________
1.1 Total sessions:
____________________
Zero results may indicate no access to the database
Location Library Remote Total
________ _______ ______ _____
Berkeley 15 181 196
Davis 119 6 125
Irvine 17 0 17
Los Angeles 1 46 47
Riverside 14 27 41
San Diego 11 22 33
San Francisco 33 0 33
Santa Barbara 4 52 56
Santa Cruz 7 48 55
Lawrence Berkeley 0 1 1
Lawrence Livermore 0 11 11
Los Alamos 0 0 0
Other - UC 3 48 51
Other-Network UC n/a 415 415
_______ ______ _____
224 857 1,081
Relative use of BIOSIS databases:
Number of Number of Number of
Sessions FIND commands Records Displayed
_________ _____________ _________________
BIOSIS 939 2,921 24,449
BIO88 142 412 3,214
Per hour usage:
Time Sessions Finds Records Displayed
__________ __________ __________ _________________
12-2 a.m. 5 26 58
2-4 a.m. 10 55 325
4-6 a.m. 10 25 155
6-8 a.m. 35 111 855
8-10 a.m. 144 343 3,139
10-12 a.m. 264 761 6,109
12-2 p.m. 161 518 5,836
2-4 p.m. 204 719 4,387
4-6 p.m. 156 506 4,360
6-8 p.m. 52 140 1,603
8-10 p.m. 28 80 573
10-12 p.m. 12 49 263
__________ __________ __________ _________________
Total: 1,081 3,333 27,663
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 36 636 672
Davis 476 22 498
Irvine 37 0 37
Los Angeles 8 139 147
Riverside 46 72 118
San Diego 69 52 121
San Francisco 137 0 137
Santa Barbara 7 221 228
Santa Cruz 8 262 270
Lawrence Berkeley 0 3 3
Lawrence Livermore 0 33 33
Los Alamos 0 0 0
Other - UC 3 135 138
Other-Network UC n/a 931 931
_______ ______ _____
827 2,506 3,333
1.3 Records displayed
______________________
Zero results may indicate no access to the database
Number of Records Displayed by location:
Location Library Remote Total
________ _______ ______ _____
Berkeley 608 6,203 6,811
Davis 3,510 96 3,606
Irvine 358 0 358
Los Angeles 43 1,528 1,571
Riverside 296 570 866
San Diego 266 479 745
San Francisco 716 0 716
Santa Barbara 34 1,895 1,929
Santa Cruz 95 1,859 1,954
Lawrence Berkeley 0 3 3
Lawrence Livermore 0 1,209 1,209
Los Alamos 0 0 0
Other - UC 8 1,140 1,148
Other-Network UC n/a 6,747 6,747
_______ ______ _____
5,934 21,729 27,663
1.4 Response time
__________________
Search response time from receipt of command at
DLA until transmission of response:
Average in seconds 1.1
Standard deviation in seconds 4.6
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 BIOSIS Databases Detailed Statistics
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Median session length (minutes:seconds) 10:46
Average session length (minutes:seconds) 14:33
Longest session recorded (minutes:seconds) 451:33
Average number of searches completed per session 3.1
Retrievals per search - median 7.0
Retrievals per search - average 825.5
Retrievals per search - standard deviation 14599
Percent of searches completed with 0 results 24.8%
Percent of searches entered that are long 2.4%
Percent of long searches completed
(includes partial results) 78.5%
Commands entered, by type, excluding errors:
Total Percentage
__________ __________
FIND 2,902 33.2%
DISPLAY (excluding automatic displays) 3,105 35.5%
BROWSE 0 0.0%
HELP 65 0.7%
EXPLAIN 77 0.9%
SET/RESET 585 6.7%
SHOW 57 0.7%
ADD ON (AND, OR, AND NOT) 431 4.9%
LOGON or LOGOFF 1,103 12.6%
COMMENT 0 0.0%
SAVE 134 1.5%
USE 8 0.1%
OTHER 281 3.2%
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 1,100 33.6% 203 18.5% 18 176.6 1476.8
TITLE WORD 482 14.7% 190 39.4% 6 146.5 979.1
EXACT TITLE 18 0.5% 10 55.6% 3 11.8 21.6
KEYWORD 1,236 37.7% 273 22.1% 32 2435.9 26926.6
JOURNAL 107 3.3% 45 42.1% 118 1620.9 3673.3
EXACT JOURNAL 63 1.9% 22 34.9% 121 1408.6 3421.0
SOURCE 4 0.1% 4 100% 0 0.0 0.0
CONFERENCE 0 0.0% 0 0.0% 0 0.0 0.0
BIOSYS NAMES 0 0.0% 0 0.0% 0 0.0 0.0
BIOSYS CODES 0 0.0% 0 0.0% 0 0.0 0.0
SUPERTAXA 1 0.0% 0 0.0% 14 14.0 0.0
MAJ CONCEPT CDES 0 0.0% 0 0.0% 0 0.0 0.0
CONCEPT CODES 1 0.0% 0 0.0% 4 4.0 0.0
PUBLICATION TYPE 0 0.0% 0 0.0% 0 0.0 0.0
DATE 13 0.4% 1 7.7% 9 57.7 99.0
LANGUAGE 9 0.3% 0 0.0% 3,600 27526.2 38431.8
ADDED 2 0.1% 1 50.0% 37 37.0 0.0
ARTICLE 0 0.0% 0 0.0% 0 0.0 0.0
AUTHOR AFFIL. 2 0.1% 1 50.0% 1 1.0 0.0
ACCESSION NO. 0 0.0% 0 0.0% 0 0.0 0.0
ISSN 1 0.0% 0 0.0% 295 295.0 0.0
ISBN 0 0.0% 0 0.0% 0 0.0 0.0
PERIODICAL 100 3.1% 10 10.0% 5 234.6 1948.6
EXACT PE 34 1.0% 1 2.9% 3 7.8 22.8
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 102 3.1% 13 12.7% 13 321.2 758.9
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 374 13.0% 101 27.0% 8 1062.1 8247.4
Single 2,504 87.0% 565 22.6% 24 1250.1 18805.9
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:
CONCEPT CODES 0 0.0% 0 0.0% 0.0 0.0 0.0
DISPLAY commands, by type, excluding automatic displays:
REVIEW 4.2%
SHORT 84.7%
LONG 1.6%
TAGS 0.2%
FIELDS 2.2%
BROWSE REVIEW 0.0%
BROWSE SHORT 0.0%
BROWSE LONG 0.0%
PERIODICALS 6.1%
COMMENTS 0.0%
Other 1.0%
2.2 Error, EXPLAIN and HELP statistics
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Percent of commands that contained errors 7.2%
Ten most frequent errors:
1. NS command - no next screen 36.3%
2. First word of command is invalid 28.4%
3. FIND command with invalid index name 8.6%
4. DISPLAY command contains invalid word 4.7%
5. PS command - no previous screen 2.7%
6. DISPLAY command-record numbers too large 2.2%
7. Search term missing from search command 1.8%
8. DATE search with unrecognized word 1.5%
9. Command contains escape or arrow key 0.9%
10. Valid command at an inappropriate time 0.7%
11. All others 12.3%
Ten most frequent EXPLAIN requests:
1. GUIDE 15.6%
2. BIOSIS DATABASE 13.0%
3. COMMANDS 9.1%
4. FIND 7.8%
5. DATABASES 7.8%
6. INDEXES 3.9%
7. B342 3.9%
8. LOCATE (BIO DB) 3.9%
9. DISPLAY 2.6%
10. LIMIT 2.6%
11. All others 29.9%
Ten most frequent HELP situations:
1. Help requested from SET DB command 27.5%
2. First word of command is invalid 14.8%
3. 720 5.6%
4. FIND command with invalid index name 4.9%
5. FIND command retrieves >1 book 4.2%
6. DISPLAY command - middle of >1 screen 4.2%
7. NS command - no next screen 3.5%
8. DISPLAY command-first of >1 screen 3.5%
9. 15 2.8%
10. SHOW command with invalid modifier 2.1%
11. All others 26.8%
Ten most frequent SHOW requests:
1. HISTORY 54.2%
2. MAIL STATUS 22.9%
3. SETTINGS 6.3%
4. MAIL SETTINGS 4.2%
5. SEARCH 4.2%
6. SUPERTAXA SETTING 2.1%
7. STOPWORDS 2.1%
8. BIOSIS NEWS 2.1%
9. DISPLAY 2.1%
11. All others 0.0%
BIOmm/dd bio MELVYL BIOSIS DATABASES TELNET STATISTICS (weekly)