MELVYL BIOSIS DATABASES TELNET STATISTICS
Time period: 03/03/01 through 03/09/01
1.0 SUMMARY STATISTICS
_______________________
1.1 Total sessions:
____________________
Zero results may indicate no access to the database
Location Library Remote Total
________ _______ ______ _____
Berkeley 188 360 548
Davis 184 7 191
Irvine 68 0 68
Los Angeles 37 45 82
Riverside 6 46 52
San Diego 46 65 111
San Francisco 65 0 65
Santa Barbara 23 39 62
Santa Cruz 16 58 74
Lawrence Berkeley 0 9 9
Lawrence Livermore 0 4 4
Los Alamos 0 0 0
Other - UC 0 32 32
Other-Network UC n/a 445 445
_______ ______ _____
633 1,110 1,743
Relative use of BIOSIS databases:
Number of Number of Number of
Sessions FIND commands Records Displayed
_________ _____________ _________________
BIOSIS 1,554 4,941 42,735
BIO88 189 408 2,133
Per hour usage:
Time Sessions Finds Records Displayed
__________ __________ __________ _________________
12-2 a.m. 25 123 1,170
2-4 a.m. 14 48 401
4-6 a.m. 13 29 199
6-8 a.m. 36 84 2,131
8-10 a.m. 184 478 3,763
10-12 a.m. 327 854 6,279
12-2 p.m. 312 966 8,360
2-4 p.m. 367 1,168 8,638
4-6 p.m. 257 817 6,647
6-8 p.m. 101 397 2,942
8-10 p.m. 63 229 2,998
10-12 p.m. 44 156 1,340
__________ __________ __________ _________________
Total: 1,743 5,349 44,868
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 674 1,134 1,808
Davis 675 12 687
Irvine 207 0 207
Los Angeles 137 161 298
Riverside 18 134 152
San Diego 130 212 342
San Francisco 248 0 248
Santa Barbara 75 185 260
Santa Cruz 44 177 221
Lawrence Berkeley 0 17 17
Lawrence Livermore 0 9 9
Los Alamos 0 0 0
Other - UC 0 73 73
Other-Network UC n/a 1,027 1,027
_______ ______ _____
2,208 3,141 5,349
1.3 Records displayed
______________________
Zero results may indicate no access to the database
Number of Records Displayed by location:
Location Library Remote Total
________ _______ ______ _____
Berkeley 5,032 10,692 15,724
Davis 5,611 389 6,000
Irvine 2,423 0 2,423
Los Angeles 1,332 1,422 2,754
Riverside 112 998 1,110
San Diego 579 1,653 2,232
San Francisco 2,004 0 2,004
Santa Barbara 561 836 1,397
Santa Cruz 295 1,621 1,916
Lawrence Berkeley 0 95 95
Lawrence Livermore 0 62 62
Los Alamos 0 0 0
Other - UC 0 885 885
Other-Network UC n/a 8,266 8,266
_______ ______ _____
17,949 26,919 44,868
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 5.3
Display response time from receipt of command at
DLA until transmission of a complete screen:
Average in seconds 0.1
Standard deviation in seconds 0.2
2.0 BIOSIS Databases Detailed Statistics
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Median session length (minutes:seconds) 8:38
Average session length (minutes:seconds) 13:53
Longest session recorded (minutes:seconds) 272:50
Average number of searches completed per session 3.0
Retrievals per search - median 8.0
Retrievals per search - average 1070.9
Retrievals per search - standard deviation 11912
Percent of searches completed with 0 results 24.3%
Percent of searches entered that are long 1.5%
Percent of long searches completed
(includes partial results) 66.7%
Commands entered, by type, excluding errors:
Total Percentage
__________ __________
FIND 4,767 30.8%
DISPLAY (excluding automatic displays) 5,642 36.5%
BROWSE 3 0.0%
HELP 282 1.8%
EXPLAIN 271 1.8%
SET/RESET 794 5.1%
SHOW 41 0.3%
ADD ON (AND, OR, AND NOT) 582 3.8%
LOGON or LOGOFF 2,060 13.3%
COMMENT 1 0.0%
SAVE 422 2.7%
USE 4 0.0%
OTHER 591 3.8%
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 1,560 29.4% 325 20.8% 22 119.9 371.8
TITLE WORD 901 17.0% 342 38.0% 9 353.8 1742.8
EXACT TITLE 47 0.9% 27 57.4% 2 5.1 6.4
KEYWORD 2,049 38.7% 411 20.1% 26 2228.6 19194.3
JOURNAL 252 4.8% 96 38.1% 463 8167.3 25739.6
EXACT JOURNAL 71 1.3% 34 47.9% 407 2021.3 3694.6
SOURCE 0 0.0% 0 0.0% 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 0 0.0% 0 0.0% 0 0.0 0.0
MAJ CONCEPT CDES 0 0.0% 0 0.0% 0 0.0 0.0
CONCEPT CODES 0 0.0% 0 0.0% 0 0.0 0.0
PUBLICATION TYPE 0 0.0% 0 0.0% 0 0.0 0.0
DATE 18 0.3% 4 22.2% 326 250.6 181.6
LANGUAGE 6 0.1% 1 16.7% 28 41.8 33.0
ADDED 1 0.0% 0 0.0% 18 18.0 0.0
ARTICLE 0 0.0% 0 0.0% 0 0.0 0.0
AUTHOR AFFIL. 17 0.3% 1 5.9% 12 89.6 284.7
ACCESSION NO. 1 0.0% 1 100% 0 0.0 0.0
ISSN 3 0.1% 0 0.0% 254 507.0 652.4
ISBN 1 0.0% 1 100% 0 0.0 0.0
PERIODICAL 165 3.1% 18 10.9% 5 40.2 118.9
EXACT PE 30 0.6% 2 6.7% 2 6.7 11.5
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 178 3.4% 35 19.7% 16 198.6 423.6
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 536 11.3% 169 31.5% 8 89.2 278.3
Single 4,192 88.7% 950 22.7% 27 1641.1 14885.9
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 3 100% 1 33.3% 2 1.5 0.7
DISPLAY commands, by type, excluding automatic displays:
REVIEW 2.3%
SHORT 87.3%
LONG 0.9%
TAGS 0.1%
FIELDS 1.8%
BROWSE REVIEW 0.0%
BROWSE SHORT 0.0%
BROWSE LONG 0.0%
PERIODICALS 5.7%
COMMENTS 0.0%
Other 1.8%
2.2 Error, EXPLAIN and HELP statistics
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Percent of commands that contained errors 9.8%
Ten most frequent errors:
1. First word of command is invalid 30.4%
2. NS command - no next screen 29.9%
3. FIND command with invalid index name 12.6%
4. PS command - no previous screen 3.7%
5. DISPLAY command contains invalid word 3.6%
6. Search term missing from search command 2.8%
7. Valid command at an inappropriate time 2.0%
8. DISPLAY command-record numbers too large 1.5%
9. DATE search with unrecognized word 1.4%
10. NS of SHOW/EXP command-no next screen 1.1%
11. All others 11.1%
Ten most frequent EXPLAIN requests:
1. LOCATE (BIO DB) 26.2%
2. GUIDE 20.7%
3. INDEXES 9.6%
4. ADDON SEARCH 5.9%
5. Unrecognized term 5.5%
6. COMMANDS 4.4%
7. FIND 4.1%
8. BIOSIS DATABASE 2.6%
9. DISPLAY 2.6%
10. MAIL 1.8%
11. All others 16.6%
Ten most frequent HELP situations:
1. Help requested from SET DB command 24.1%
2. DISPLAY command-first of >1 screen 12.3%
3. First word of command is invalid 12.1%
4. FIND command with invalid index name 11.9%
5. FIND command retrieves >1 book 5.8%
6. DISPLAY command - last of >1 screen 5.2%
7. DISPLAY command-complete in one screen 5.1%
8. FIND command with zero results 4.0%
9. DISPLAY command - middle of >1 screen 3.4%
10. NS command - no next screen 2.4%
11. All others 13.7%
Ten most frequent SHOW requests:
1. HISTORY 63.4%
2. SEARCH 14.6%
3. BIOSIS NEWS 4.9%
4. UPDATE 4.9%
5. TAXONOMIC GUIDE 2.4%
6. GLOSSARY 2.4%
7. SYSTEM NEWS 2.4%
8. MAIL SETTINGS 2.4%
9. MAIL STATUS 2.4%
11. All others 0.0%
BIOmm/dd bio MELVYL BIOSIS DATABASES TELNET STATISTICS (weekly)