MELVYL BIOSIS DATABASES TELNET STATISTICS
Time period: 01/27/01 through 02/02/01
1.0 SUMMARY STATISTICS
_______________________
1.1 Total sessions:
____________________
Zero results may indicate no access to the database
Location Library Remote Total
________ _______ ______ _____
Berkeley 104 346 450
Davis 207 0 207
Irvine 39 0 39
Los Angeles 20 48 68
Riverside 28 35 63
San Diego 19 48 67
San Francisco 34 0 34
Santa Barbara 20 31 51
Santa Cruz 22 85 107
Lawrence Berkeley 0 16 16
Lawrence Livermore 0 12 12
Los Alamos 0 0 0
Other - UC 1 24 25
Other-Network UC n/a 482 482
_______ ______ _____
494 1,127 1,621
Relative use of BIOSIS databases:
Number of Number of Number of
Sessions FIND commands Records Displayed
_________ _____________ _________________
BIOSIS 1,426 4,097 38,589
BIO88 195 513 2,392
Per hour usage:
Time Sessions Finds Records Displayed
__________ __________ __________ _________________
12-2 a.m. 14 36 761
2-4 a.m. 8 49 250
4-6 a.m. 16 68 2,079
6-8 a.m. 33 70 638
8-10 a.m. 165 383 3,193
10-12 a.m. 314 839 6,038
12-2 p.m. 286 718 6,879
2-4 p.m. 331 1,078 8,203
4-6 p.m. 241 721 5,857
6-8 p.m. 127 393 4,075
8-10 p.m. 48 144 1,780
10-12 p.m. 38 111 1,228
__________ __________ __________ _________________
Total: 1,621 4,610 40,981
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 311 1,071 1,382
Davis 728 0 728
Irvine 115 0 115
Los Angeles 48 124 172
Riverside 112 48 160
San Diego 47 128 175
San Francisco 85 0 85
Santa Barbara 77 156 233
Santa Cruz 43 494 537
Lawrence Berkeley 0 31 31
Lawrence Livermore 0 42 42
Los Alamos 0 0 0
Other - UC 1 61 62
Other-Network UC n/a 888 888
_______ ______ _____
1,567 3,043 4,610
1.3 Records displayed
______________________
Zero results may indicate no access to the database
Number of Records Displayed by location:
Location Library Remote Total
________ _______ ______ _____
Berkeley 2,684 10,267 12,951
Davis 6,840 0 6,840
Irvine 1,229 0 1,229
Los Angeles 486 1,239 1,725
Riverside 734 487 1,221
San Diego 466 2,244 2,710
San Francisco 686 0 686
Santa Barbara 403 1,245 1,648
Santa Cruz 397 2,637 3,034
Lawrence Berkeley 0 330 330
Lawrence Livermore 0 861 861
Los Alamos 0 0 0
Other - UC 31 675 706
Other-Network UC n/a 7,040 7,040
_______ ______ _____
13,956 27,025 40,981
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 6.9
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) 8:16
Average session length (minutes:seconds) 13:02
Longest session recorded (minutes:seconds) 285:11
Average number of searches completed per session 2.8
Retrievals per search - median 8.0
Retrievals per search - average 872.7
Retrievals per search - standard deviation 11866
Percent of searches completed with 0 results 24.7%
Percent of searches entered that are long 2.0%
Percent of long searches completed
(includes partial results) 66.0%
Commands entered, by type, excluding errors:
Total Percentage
__________ __________
FIND 4,047 31.3%
DISPLAY (excluding automatic displays) 4,583 35.5%
BROWSE 0 0.0%
HELP 176 1.4%
EXPLAIN 129 1.0%
SET/RESET 787 6.1%
SHOW 37 0.3%
ADD ON (AND, OR, AND NOT) 563 4.4%
LOGON or LOGOFF 1,764 13.7%
COMMENT 0 0.0%
SAVE 364 2.8%
USE 2 0.0%
OTHER 458 3.5%
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 1,732 39.1% 339 19.6% 19 122.9 505.3
TITLE WORD 688 15.5% 292 42.4% 7 580.0 3803.6
EXACT TITLE 41 0.9% 23 56.1% 5 252.9 627.2
KEYWORD 1,432 32.3% 250 17.5% 32 2717.8 23075.1
JOURNAL 153 3.5% 63 41.2% 793 2138.4 3309.9
EXACT JOURNAL 82 1.9% 44 53.7% 844 2621.8 4499.2
SOURCE 1 0.0% 0 0.0% 110 110.0 0.0
CONFERENCE 7 0.2% 5 71.4% 31 30.5 40.3
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 3 0.1% 1 33.3% 1,733 1733.0 2445.2
MAJ CONCEPT CDES 0 0.0% 0 0.0% 0 0.0 0.0
CONCEPT CODES 1 0.0% 0 0.0% 5 5.0 0.0
PUBLICATION TYPE 1 0.0% 0 0.0% 6 6.0 0.0
DATE 15 0.3% 4 26.7% 2 6.3 6.4
LANGUAGE 2 0.0% 1 50.0% 1 1.0 0.0
ADDED 2 0.0% 1 50.0% 21 21.0 0.0
ARTICLE 0 0.0% 0 0.0% 0 0.0 0.0
AUTHOR AFFIL. 14 0.3% 2 14.3% 7 14.5 20.1
ACCESSION NO. 0 0.0% 0 0.0% 0 0.0 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 145 3.3% 44 30.3% 7 139.0 478.4
EXACT PE 16 0.4% 0 0.0% 10 47.6 87.5
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 96 2.2% 15 15.6% 26 438.7 1743.3
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 408 10.2% 124 30.4% 6 115.2 822.8
Single 3,603 89.8% 828 23.0% 28 1404.9 15196.6
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:
CONCEPT CODES 0 0.0% 0 0.0% 0.0 0.0 0.0
DISPLAY commands, by type, excluding automatic displays:
REVIEW 3.3%
SHORT 85.4%
LONG 3.2%
TAGS 0.6%
FIELDS 2.1%
BROWSE REVIEW 0.0%
BROWSE SHORT 0.0%
BROWSE LONG 0.0%
PERIODICALS 4.1%
COMMENTS 0.0%
Other 1.1%
2.2 Error, EXPLAIN and HELP statistics
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Percent of commands that contained errors 9.8%
Ten most frequent errors:
1. NS command - no next screen 31.7%
2. First word of command is invalid 30.4%
3. FIND command with invalid index name 12.4%
4. PS command - no previous screen 4.3%
5. DISPLAY command contains invalid word 3.2%
6. Valid command at an inappropriate time 2.0%
7. Search term missing from search command 1.9%
8. DATE search with unrecognized word 1.4%
9. Index invalid in current database 1.4%
10. DISPLAY command-record numbers too large 1.1%
11. All others 10.2%
Ten most frequent EXPLAIN requests:
1. LOCATE (BIO DB) 21.7%
2. GUIDE 20.9%
3. FIND 9.3%
4. COMMANDS 8.5%
5. BIOSIS DATABASE 3.9%
6. INDEXES 3.9%
7. DISPLAY 3.9%
8. Unrecognized term-reminders off 3.1%
9. Unrecognized term 3.1%
10. DATABASES 3.1%
11. All others 18.6%
Ten most frequent HELP situations:
1. Help requested from SET DB command 18.0%
2. FIND command with invalid index name 15.1%
3. First word of command is invalid 12.1%
4. DISPLAY command-first of >1 screen 8.2%
5. DISPLAY command - middle of >1 screen 5.6%
6. NS command - no next screen 5.2%
7. FIND command retrieves >1 book 5.2%
8. DISPLAY command - last of >1 screen 4.3%
9. FIND command with zero results 3.9%
10. 3 HELP commands issued from same code 3.0%
11. All others 19.3%
Ten most frequent SHOW requests:
1. HISTORY 61.8%
2. GLOSSARY 17.6%
3. SEARCH 17.6%
4. MAIL STATUS 2.9%
11. All others 0.0%
BIOmm/dd bio MELVYL BIOSIS DATABASES TELNET STATISTICS (weekly)