MELVYL BIOSIS DATABASES TELNET STATISTICS
Time period: 05/18/02 through 05/24/02
1.0 SUMMARY STATISTICS
_______________________
1.1 Total sessions:
____________________
Zero results may indicate no access to the database
Location Library Remote Total
________ _______ ______ _____
Berkeley 23 163 186
Davis 129 10 139
Irvine 55 0 55
Los Angeles 2 68 70
Riverside 3 14 17
San Diego 16 51 67
San Francisco 41 0 41
Santa Barbara 0 29 29
Santa Cruz 2 51 53
Lawrence Berkeley 0 7 7
Lawrence Livermore 0 0 0
Los Alamos 0 0 0
Other - UC 0 26 26
Other-Network UC n/a 155 155
_______ ______ _____
271 574 845
Relative use of BIOSIS databases:
Number of Number of Number of
Sessions FIND commands Records Displayed
_________ _____________ _________________
BIOSIS 772 2,264 21,909
BIO88 73 166 887
Per hour usage:
Time Sessions Finds Records Displayed
__________ __________ __________ _________________
12-2 a.m. 6 17 423
2-4 a.m. 14 18 139
4-6 a.m. 3 6 46
6-8 a.m. 17 42 304
8-10 a.m. 87 191 1,929
10-12 a.m. 167 531 4,680
12-2 p.m. 138 386 3,374
2-4 p.m. 147 433 3,751
4-6 p.m. 147 435 4,789
6-8 p.m. 66 227 2,024
8-10 p.m. 26 86 755
10-12 p.m. 27 58 582
__________ __________ __________ _________________
Total: 845 2,430 22,796
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 72 445 517
Davis 464 19 483
Irvine 135 0 135
Los Angeles 23 168 191
Riverside 10 60 70
San Diego 39 150 189
San Francisco 189 0 189
Santa Barbara 0 64 64
Santa Cruz 5 137 142
Lawrence Berkeley 0 10 10
Lawrence Livermore 0 0 0
Los Alamos 0 0 0
Other - UC 0 63 63
Other-Network UC n/a 377 377
_______ ______ _____
937 1,493 2,430
1.3 Records displayed
______________________
Zero results may indicate no access to the database
Number of Records Displayed by location:
Location Library Remote Total
________ _______ ______ _____
Berkeley 443 6,904 7,347
Davis 3,656 132 3,788
Irvine 1,002 0 1,002
Los Angeles 78 1,993 2,071
Riverside 59 319 378
San Diego 314 1,206 1,520
San Francisco 954 0 954
Santa Barbara 0 273 273
Santa Cruz 1 2,551 2,552
Lawrence Berkeley 0 156 156
Lawrence Livermore 0 0 0
Los Alamos 0 0 0
Other - UC 0 833 833
Other-Network UC n/a 1,922 1,922
_______ ______ _____
6,507 16,289 22,796
1.4 Response time
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Search response time from receipt of command at
DLA until transmission of response:
Average in seconds 1.1
Standard deviation in seconds 3.3
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 BIOSIS Databases Detailed Statistics
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Median session length (minutes:seconds) 9:33
Average session length (minutes:seconds) 14:08
Longest session recorded (minutes:seconds) 718:58
Average number of searches completed per session 2.9
Retrievals per search - median 8.0
Retrievals per search - average 1501.4
Retrievals per search - standard deviation 14383
Percent of searches completed with 0 results 23.0%
Percent of searches entered that are long 1.6%
Percent of long searches completed
(includes partial results) 69.2%
Commands entered, by type, excluding errors:
Total Percentage
__________ __________
FIND 2,065 30.0%
DISPLAY (excluding automatic displays) 2,408 35.0%
BROWSE 0 0.0%
HELP 74 1.1%
EXPLAIN 68 1.0%
SET/RESET 326 4.7%
SHOW 5 0.1%
ADD ON (AND, OR, AND NOT) 365 5.3%
LOGON or LOGOFF 1,135 16.5%
COMMENT 0 0.0%
SAVE 172 2.5%
USE 0 0.0%
OTHER 267 3.9%
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 658 28.9% 124 18.8% 20 146.7 501.0
TITLE WORD 373 16.4% 132 35.4% 12 725.0 3447.5
EXACT TITLE 11 0.5% 8 72.7% 1 3.0 3.5
KEYWORD 937 41.1% 183 19.5% 31 2535.7 18649.7
JOURNAL 94 4.1% 42 44.7% 306 25035.4 62525.0
EXACT JOURNAL 28 1.2% 13 46.4% 73 3019.7 6196.9
SOURCE 2 0.1% 2 100% 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% 28 28.0 0.0
MAJ CONCEPT CDES 0 0.0% 0 0.0% 0 0.0 0.0
CONCEPT CODES 1 0.0% 0 0.0% 28 28.0 0.0
PUBLICATION TYPE 0 0.0% 0 0.0% 0 0.0 0.0
DATE 3 0.1% 2 66.7% 11 11.0 0.0
LANGUAGE 1 0.0% 0 0.0% 20 20.0 0.0
ADDED 0 0.0% 0 0.0% 0 0.0 0.0
ARTICLE 0 0.0% 0 0.0% 0 0.0 0.0
AUTHOR AFFIL. 22 1.0% 1 4.5% 55 172.4 364.9
ACCESSION NO. 1 0.0% 0 0.0% 1 1.0 0.0
ISSN 0 0.0% 0 0.0% 0 0.0 0.0
ISBN 0 0.0% 0 0.0% 0 0.0 0.0
PERIODICAL 76 3.3% 9 11.8% 3 28.2 136.4
EXACT PE 27 1.2% 2 7.4% 2 523.0 2578.6
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 44 1.9% 12 27.3% 16 55.2 89.3
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 225 11.0% 61 27.1% 6 24.8 65.1
Single 1,825 89.0% 406 22.2% 31 2483.7 18663.7
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:
CONCEPT CODES 0 0.0% 0 0.0% 0.0 0.0 0.0
DISPLAY commands, by type, excluding automatic displays:
REVIEW 2.8%
SHORT 87.6%
LONG 1.0%
TAGS 0.2%
FIELDS 1.7%
BROWSE REVIEW 0.0%
BROWSE SHORT 0.0%
BROWSE LONG 0.0%
PERIODICALS 4.5%
COMMENTS 0.0%
Other 2.2%
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 33.7%
2. First word of command is invalid 27.3%
3. FIND command with invalid index name 10.8%
4. DISPLAY command - no FIND results 4.2%
5. DATE search with unrecognized word 3.2%
6. Valid command at an inappropriate time 2.6%
7. PS command - no previous screen 2.6%
8. DISPLAY command contains invalid word 2.2%
9. Search term missing from search command 2.2%
10. DISPLAY command-record numbers too large 0.9%
11. All others 10.3%
Ten most frequent EXPLAIN requests:
1. GUIDE 23.5%
2. LOCATE (BIO DB) 14.7%
3. COMMANDS 10.3%
4. FIND 10.3%
5. INDEXES 7.4%
6. ADDON SEARCH 5.9%
7. BIOSIS DATABASE 4.4%
8. DATABASES 4.4%
9. DATE 2.9%
10. BIOSIS BACKFILES 2.9%
11. All others 13.2%
Ten most frequent HELP situations:
1. Help requested from SET DB command 21.8%
2. First word of command is invalid 19.7%
3. DISPLAY command-first of >1 screen 9.9%
4. FIND command with invalid index name 8.5%
5. DISPLAY command - middle of >1 screen 7.7%
6. FIND command retrieves >1 book 4.2%
7. 15 3.5%
8. FIND command with zero results 3.5%
9. DISPLAY command - last of >1 screen 3.5%
10. DISPLAY command-complete in one screen 2.1%
11. All others 15.5%
Ten most frequent SHOW requests:
1. HISTORY 80.0%
2. MAIL STATUS 20.0%
11. All others 0.0%
BIOmm/dd bio MELVYL BIOSIS DATABASES TELNET STATISTICS (weekly)