MELVYL BIOSIS DATABASES TELNET STATISTICS
Time period: 11/10/01 through 11/16/01
1.0 SUMMARY STATISTICS
_______________________
1.1 Total sessions:
____________________
Zero results may indicate no access to the database
Location Library Remote Total
________ _______ ______ _____
Berkeley 94 264 358
Davis 157 7 164
Irvine 22 0 22
Los Angeles 0 37 37
Riverside 4 41 45
San Diego 16 66 82
San Francisco 25 0 25
Santa Barbara 0 19 19
Santa Cruz 0 17 17
Lawrence Berkeley 0 0 0
Lawrence Livermore 0 7 7
Los Alamos 0 0 0
Other - UC 0 19 19
Other-Network UC n/a 335 335
_______ ______ _____
318 812 1,130
Relative use of BIOSIS databases:
Number of Number of Number of
Sessions FIND commands Records Displayed
_________ _____________ _________________
BIOSIS 1,012 2,855 26,786
BIO88 118 270 2,011
Per hour usage:
Time Sessions Finds Records Displayed
__________ __________ __________ _________________
12-2 a.m. 10 27 759
2-4 a.m. 11 29 1,416
4-6 a.m. 9 24 243
6-8 a.m. 42 115 700
8-10 a.m. 135 341 2,016
10-12 a.m. 238 613 5,387
12-2 p.m. 217 572 4,320
2-4 p.m. 209 629 7,206
4-6 p.m. 149 477 3,889
6-8 p.m. 71 161 2,002
8-10 p.m. 15 72 455
10-12 p.m. 24 65 404
__________ __________ __________ _________________
Total: 1,130 3,125 28,797
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 308 792 1,100
Davis 642 11 653
Irvine 44 0 44
Los Angeles 0 129 129
Riverside 16 85 101
San Diego 45 202 247
San Francisco 73 0 73
Santa Barbara 0 72 72
Santa Cruz 0 77 77
Lawrence Berkeley 0 0 0
Lawrence Livermore 0 7 7
Los Alamos 0 0 0
Other - UC 0 22 22
Other-Network UC n/a 600 600
_______ ______ _____
1,128 1,997 3,125
1.3 Records displayed
______________________
Zero results may indicate no access to the database
Number of Records Displayed by location:
Location Library Remote Total
________ _______ ______ _____
Berkeley 3,422 7,924 11,346
Davis 5,639 125 5,764
Irvine 253 0 253
Los Angeles 0 907 907
Riverside 79 750 829
San Diego 214 2,012 2,226
San Francisco 1,091 0 1,091
Santa Barbara 0 801 801
Santa Cruz 0 647 647
Lawrence Berkeley 0 0 0
Lawrence Livermore 0 11 11
Los Alamos 0 0 0
Other - UC 0 207 207
Other-Network UC n/a 4,715 4,715
_______ ______ _____
10,698 18,099 28,797
1.4 Response time
__________________
Search response time from receipt of command at
DLA until transmission of response:
Average in seconds 1.3
Standard deviation in seconds 6.1
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) 8:43
Average session length (minutes:seconds) 14:12
Longest session recorded (minutes:seconds) 693:35
Average number of searches completed per session 2.7
Retrievals per search - median 9.0
Retrievals per search - average 1405.4
Retrievals per search - standard deviation 14825
Percent of searches completed with 0 results 23.1%
Percent of searches entered that are long 1.9%
Percent of long searches completed
(includes partial results) 69.0%
Commands entered, by type, excluding errors:
Total Percentage
__________ __________
FIND 2,721 29.8%
DISPLAY (excluding automatic displays) 3,441 37.7%
BROWSE 0 0.0%
HELP 117 1.3%
EXPLAIN 140 1.5%
SET/RESET 576 6.3%
SHOW 28 0.3%
ADD ON (AND, OR, AND NOT) 404 4.4%
LOGON or LOGOFF 1,219 13.4%
COMMENT 0 0.0%
SAVE 155 1.7%
USE 4 0.0%
OTHER 324 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 887 29.7% 184 20.7% 22 130.2 411.5
TITLE WORD 505 16.9% 182 36.0% 7 277.6 1240.6
EXACT TITLE 34 1.1% 18 52.9% 2 24.4 67.3
KEYWORD 1,079 36.1% 174 16.1% 33 2585.3 16043.5
JOURNAL 140 4.7% 64 45.7% 267 5977.7 25143.6
EXACT JOURNAL 105 3.5% 39 37.1% 472 3354.2 8357.2
SOURCE 2 0.1% 1 50.0% 78 78.0 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 1 0.0% 0 0.0% 17 17.0 0.0
PUBLICATION TYPE 0 0.0% 0 0.0% 0 0.0 0.0
DATE 23 0.8% 3 13.0% 8 44.0 76.6
LANGUAGE 1 0.0% 0 0.0% 10,018 10018.0 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. 2 0.1% 0 0.0% 18 18.0 4.2
ACCESSION NO. 0 0.0% 0 0.0% 0 0.0 0.0
ISSN 1 0.0% 0 0.0% 2,411 2411.0 0.0
ISBN 0 0.0% 0 0.0% 0 0.0 0.0
PERIODICAL 93 3.1% 14 15.1% 5 16.1 40.5
EXACT PE 18 0.6% 3 16.7% 3 74.1 268.9
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 3.2% 16 16.7% 18 995.4 6622.6
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 278 10.3% 82 29.5% 7 94.0 721.5
Single 2,413 89.7% 530 22.0% 32 1723.5 12467.8
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 2.0%
SHORT 88.1%
LONG 1.2%
TAGS 0.4%
FIELDS 2.7%
BROWSE REVIEW 0.0%
BROWSE SHORT 0.0%
BROWSE LONG 0.0%
PERIODICALS 4.3%
COMMENTS 0.0%
Other 1.3%
2.2 Error, EXPLAIN and HELP statistics
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Percent of commands that contained errors 9.3%
Ten most frequent errors:
1. First word of command is invalid 32.9%
2. NS command - no next screen 28.8%
3. FIND command with invalid index name 9.1%
4. PS command - no previous screen 3.8%
5. DISPLAY command contains invalid word 3.7%
6. Max. # of ports to a Z39 db are in use 3.5%
7. Search term missing from search command 2.7%
8. Valid command at an inappropriate time 2.0%
9. DATE search with unrecognized word 1.5%
10. Index invalid in current database 1.1%
11. All others 10.8%
Ten most frequent EXPLAIN requests:
1. LOCATE (BIO DB) 30.7%
2. GUIDE 18.6%
3. FIND 7.1%
4. COMMANDS 5.0%
5. BIOSIS DATABASE 5.0%
6. ADDON SEARCH 4.3%
7. INDEXES 3.6%
8. DISPLAY 3.6%
9. MAGS TEXT 1.4%
10. CONCEPT CODES 1.4%
11. All others 19.3%
Ten most frequent HELP situations:
1. Help requested from SET DB command 17.9%
2. First word of command is invalid 16.7%
3. DISPLAY command-first of >1 screen 12.8%
4. FIND command with invalid index name 10.9%
5. DISPLAY command - middle of >1 screen 6.6%
6. FIND command retrieves >1 book 5.1%
7. DISPLAY command-complete in one screen 5.1%
8. FIND command with zero results 4.7%
9. DISPLAY command - last of >1 screen 4.3%
10. F/BR with index invalid in current DB 1.6%
11. All others 14.4%
Ten most frequent SHOW requests:
1. HISTORY 45.8%
2. SEARCH 41.7%
3. BIOSIS NEWS 8.3%
4. SETTINGS 4.2%
11. All others 0.0%
BIOmm/dd bio MELVYL BIOSIS DATABASES TELNET STATISTICS (weekly)