MELVYL BIOSIS DATABASES TELNET STATISTICS
Time period: 06/16/01 through 06/22/01
1.0 SUMMARY STATISTICS
_______________________
1.1 Total sessions:
____________________
Zero results may indicate no access to the database
Location Library Remote Total
________ _______ ______ _____
Berkeley 51 250 301
Davis 169 5 174
Irvine 27 0 27
Los Angeles 1 55 56
Riverside 8 29 37
San Diego 9 39 48
San Francisco 29 0 29
Santa Barbara 2 18 20
Santa Cruz 4 24 28
Lawrence Berkeley 0 7 7
Lawrence Livermore 0 14 14
Los Alamos 0 0 0
Other - UC 0 18 18
Other-Network UC n/a 337 337
_______ ______ _____
300 796 1,096
Relative use of BIOSIS databases:
Number of Number of Number of
Sessions FIND commands Records Displayed
_________ _____________ _________________
BIOSIS 985 2,988 28,548
BIO88 111 230 1,762
Per hour usage:
Time Sessions Finds Records Displayed
__________ __________ __________ _________________
12-2 a.m. 7 26 240
2-4 a.m. 6 42 788
4-6 a.m. 23 64 256
6-8 a.m. 42 92 919
8-10 a.m. 120 355 3,226
10-12 a.m. 217 565 5,245
12-2 p.m. 188 588 6,037
2-4 p.m. 253 764 5,322
4-6 p.m. 145 447 5,674
6-8 p.m. 46 145 921
8-10 p.m. 22 69 659
10-12 p.m. 27 61 1,023
__________ __________ __________ _________________
Total: 1,096 3,218 30,310
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 171 829 1,000
Davis 758 13 771
Irvine 93 0 93
Los Angeles 5 133 138
Riverside 12 75 87
San Diego 20 87 107
San Francisco 100 0 100
Santa Barbara 3 51 54
Santa Cruz 5 47 52
Lawrence Berkeley 0 7 7
Lawrence Livermore 0 37 37
Los Alamos 0 0 0
Other - UC 0 35 35
Other-Network UC n/a 737 737
_______ ______ _____
1,167 2,051 3,218
1.3 Records displayed
______________________
Zero results may indicate no access to the database
Number of Records Displayed by location:
Location Library Remote Total
________ _______ ______ _____
Berkeley 1,777 7,204 8,981
Davis 8,339 172 8,511
Irvine 1,014 0 1,014
Los Angeles 132 1,290 1,422
Riverside 206 711 917
San Diego 103 1,500 1,603
San Francisco 670 0 670
Santa Barbara 10 299 309
Santa Cruz 17 394 411
Lawrence Berkeley 0 20 20
Lawrence Livermore 0 458 458
Los Alamos 0 0 0
Other - UC 0 480 480
Other-Network UC n/a 5,514 5,514
_______ ______ _____
12,268 18,042 30,310
1.4 Response time
__________________
Search response time from receipt of command at
DLA until transmission of response:
Average in seconds 1.2
Standard deviation in seconds 11.1
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) 10:03
Average session length (minutes:seconds) 15:10
Longest session recorded (minutes:seconds) 492:53
Average number of searches completed per session 2.9
Retrievals per search - median 9.0
Retrievals per search - average 696.3
Retrievals per search - standard deviation 5473.9
Percent of searches completed with 0 results 23.3%
Percent of searches entered that are long 2.5%
Percent of long searches completed
(includes partial results) 68.4%
Commands entered, by type, excluding errors:
Total Percentage
__________ __________
FIND 2,821 29.3%
DISPLAY (excluding automatic displays) 3,634 37.8%
BROWSE 0 0.0%
HELP 103 1.1%
EXPLAIN 78 0.8%
SET/RESET 550 5.7%
SHOW 26 0.3%
ADD ON (AND, OR, AND NOT) 397 4.1%
LOGON or LOGOFF 1,182 12.3%
COMMENT 0 0.0%
SAVE 522 5.4%
USE 4 0.0%
OTHER 309 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 1,240 39.4% 247 19.9% 20 109.8 315.4
TITLE WORD 470 14.9% 228 48.5% 7 117.7 522.3
EXACT TITLE 13 0.4% 8 61.5% 3 3.8 3.0
KEYWORD 1,014 32.2% 189 18.6% 31 1891.5 9736.9
JOURNAL 119 3.8% 51 42.9% 191 3448.4 10171.5
EXACT JOURNAL 55 1.7% 24 43.6% 341 3727.6 11213.4
SOURCE 4 0.1% 3 75.0% 105 105.0 0.0
CONFERENCE 1 0.0% 1 100% 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% 49 49.0 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 8 0.3% 2 25.0% 9 9.3 7.9
LANGUAGE 1 0.0% 0 0.0% 251 251.0 0.0
ADDED 2 0.1% 1 50.0% 22 22.0 0.0
ARTICLE 0 0.0% 0 0.0% 0 0.0 0.0
AUTHOR AFFIL. 17 0.5% 3 17.6% 24 102.1 189.2
ACCESSION NO. 0 0.0% 0 0.0% 0 0.0 0.0
ISSN 3 0.1% 2 66.7% 923 923.0 0.0
ISBN 1 0.0% 1 100% 0 0.0 0.0
PERIODICAL 85 2.7% 20 23.5% 3 23.6 63.6
EXACT PE 25 0.8% 0 0.0% 5 55.2 248.5
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 89 2.8% 14 15.7% 27 267.7 704.3
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 342 12.3% 125 36.5% 6 122.0 677.8
Single 2,449 87.7% 541 22.1% 27 1059.1 6904.0
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 2.1%
SHORT 86.4%
LONG 1.6%
TAGS 1.8%
FIELDS 3.2%
BROWSE REVIEW 0.0%
BROWSE SHORT 0.0%
BROWSE LONG 0.0%
PERIODICALS 3.1%
COMMENTS 0.0%
Other 1.7%
2.2 Error, EXPLAIN and HELP statistics
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Percent of commands that contained errors 8.4%
Ten most frequent errors:
1. NS command - no next screen 35.4%
2. First word of command is invalid 24.0%
3. FIND command with invalid index name 9.6%
4. DISPLAY command contains invalid word 4.1%
5. DATE search with unrecognized word 2.4%
6. Valid command at an inappropriate time 1.9%
7. PS command - no previous screen 1.9%
8. Search term missing from search command 1.6%
9. Index invalid in current database 1.6%
10. DISPLAY command-record numbers too large 1.5%
11. All others 16.0%
Ten most frequent EXPLAIN requests:
1. GUIDE 19.2%
2. FIND 16.7%
3. BIOSIS DATABASE 10.3%
4. INDEXES 9.0%
5. COMMANDS 6.4%
6. LOCATE (BIO DB) 6.4%
7. DATE 5.1%
8. B401 3.8%
9. ADDON SEARCH 3.8%
10. DISPLAY 2.6%
11. All others 16.7%
Ten most frequent HELP situations:
1. Help requested from SET DB command 23.2%
2. FIND command with invalid index name 13.3%
3. First word of command is invalid 12.2%
4. DISPLAY command-first of >1 screen 5.0%
5. NS command - no next screen 4.4%
6. FIND command with zero results 4.4%
7. FIND command retrieves >1 book 4.4%
8. DISPLAY command - middle of >1 screen 4.4%
9. DISPLAY command - last of >1 screen 2.8%
10. 117 2.2%
11. All others 23.8%
Ten most frequent SHOW requests:
1. HISTORY 73.9%
2. SEARCH 17.4%
3. BIOSIS NEWS 4.3%
4. MAIL STATUS 4.3%
11. All others 0.0%
BIOmm/dd bio MELVYL BIOSIS DATABASES TELNET STATISTICS (weekly)