MELVYL BIOSIS DATABASES TELNET STATISTICS
Time period: 09/15/01 through 09/21/01
1.0 SUMMARY STATISTICS
_______________________
1.1 Total sessions:
____________________
Zero results may indicate no access to the database
Location Library Remote Total
________ _______ ______ _____
Berkeley 78 254 332
Davis 136 7 143
Irvine 10 0 10
Los Angeles 1 45 46
Riverside 5 40 45
San Diego 11 61 72
San Francisco 20 0 20
Santa Barbara 0 32 32
Santa Cruz 4 13 17
Lawrence Berkeley 0 3 3
Lawrence Livermore 0 11 11
Los Alamos 0 0 0
Other - UC 0 25 25
Other-Network UC n/a 465 465
_______ ______ _____
265 956 1,221
Relative use of BIOSIS databases:
Number of Number of Number of
Sessions FIND commands Records Displayed
_________ _____________ _________________
BIOSIS 1,056 2,902 24,481
BIO88 165 387 1,067
Per hour usage:
Time Sessions Finds Records Displayed
__________ __________ __________ _________________
12-2 a.m. 19 79 1,096
2-4 a.m. 6 24 150
4-6 a.m. 19 31 184
6-8 a.m. 44 69 508
8-10 a.m. 170 423 2,100
10-12 a.m. 281 612 5,172
12-2 p.m. 231 706 4,579
2-4 p.m. 188 652 6,042
4-6 p.m. 169 490 3,798
6-8 p.m. 60 104 752
8-10 p.m. 23 76 919
10-12 p.m. 11 23 248
__________ __________ __________ _________________
Total: 1,221 3,289 25,548
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 218 781 999
Davis 481 15 496
Irvine 33 0 33
Los Angeles 1 130 131
Riverside 10 129 139
San Diego 36 155 191
San Francisco 84 0 84
Santa Barbara 0 142 142
Santa Cruz 7 29 36
Lawrence Berkeley 0 6 6
Lawrence Livermore 0 21 21
Los Alamos 0 0 0
Other - UC 1 43 44
Other-Network UC n/a 967 967
_______ ______ _____
871 2,418 3,289
1.3 Records displayed
______________________
Zero results may indicate no access to the database
Number of Records Displayed by location:
Location Library Remote Total
________ _______ ______ _____
Berkeley 2,123 8,275 10,398
Davis 4,554 211 4,765
Irvine 110 0 110
Los Angeles 36 653 689
Riverside 25 1,041 1,066
San Diego 65 1,672 1,737
San Francisco 526 0 526
Santa Barbara 0 893 893
Santa Cruz 6 75 81
Lawrence Berkeley 0 21 21
Lawrence Livermore 0 54 54
Los Alamos 0 0 0
Other - UC 0 198 198
Other-Network UC n/a 5,010 5,010
_______ ______ _____
7,445 18,103 25,548
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 4.7
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) 9:53
Average session length (minutes:seconds) 13:06
Longest session recorded (minutes:seconds) 109:52
Average number of searches completed per session 2.7
Retrievals per search - median 7.0
Retrievals per search - average 683.2
Retrievals per search - standard deviation 6675.3
Percent of searches completed with 0 results 25.5%
Percent of searches entered that are long 2.3%
Percent of long searches completed
(includes partial results) 73.7%
Commands entered, by type, excluding errors:
Total Percentage
__________ __________
FIND 2,820 32.6%
DISPLAY (excluding automatic displays) 2,916 33.7%
BROWSE 0 0.0%
HELP 97 1.1%
EXPLAIN 106 1.2%
SET/RESET 712 8.2%
SHOW 27 0.3%
ADD ON (AND, OR, AND NOT) 469 5.4%
LOGON or LOGOFF 1,134 13.1%
COMMENT 0 0.0%
SAVE 90 1.0%
USE 3 0.0%
OTHER 289 3.3%
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 1,168 36.0% 220 18.8% 21 190.8 869.9
TITLE WORD 579 17.9% 243 42.0% 7 596.4 4611.1
EXACT TITLE 39 1.2% 22 56.4% 2 8.7 17.3
KEYWORD 961 29.7% 190 19.8% 36 1861.5 12108.3
JOURNAL 108 3.3% 54 50.0% 308 5043.9 19853.4
EXACT JOURNAL 73 2.3% 31 42.5% 184 1953.0 3635.5
SOURCE 1 0.0% 0 0.0% 1 1.0 0.0
CONFERENCE 7 0.2% 6 85.7% 993 993.0 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% 29 29.0 0.0
PUBLICATION TYPE 0 0.0% 0 0.0% 0 0.0 0.0
DATE 24 0.7% 8 33.3% 6 33.5 72.1
LANGUAGE 3 0.1% 0 0.0% 8 66.7 105.1
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% 34 34.0 12.7
ACCESSION NO. 0 0.0% 0 0.0% 0 0.0 0.0
ISSN 2 0.1% 2 100% 0 0.0 0.0
ISBN 0 0.0% 0 0.0% 0 0.0 0.0
PERIODICAL 93 2.9% 9 9.7% 5 493.9 2448.7
EXACT PE 16 0.5% 3 18.8% 2 101.7 346.7
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 163 5.0% 30 18.4% 11 209.2 658.6
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 416 14.9% 118 28.4% 6 100.1 432.5
Single 2,382 85.1% 573 24.1% 31 1207.1 8935.4
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 3.1%
SHORT 86.7%
LONG 1.2%
TAGS 0.4%
FIELDS 2.0%
BROWSE REVIEW 0.0%
BROWSE SHORT 0.0%
BROWSE LONG 0.0%
PERIODICALS 5.4%
COMMENTS 0.0%
Other 1.2%
2.2 Error, EXPLAIN and HELP statistics
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Percent of commands that contained errors 8.8%
Ten most frequent errors:
1. NS command - no next screen 32.9%
2. First word of command is invalid 27.8%
3. FIND command with invalid index name 11.9%
4. Search term missing from search command 3.7%
5. PS command - no previous screen 3.5%
6. DISPLAY command contains invalid word 2.6%
7. DATE search with unrecognized word 2.5%
8. Index invalid in current database 1.8%
9. Valid command at an inappropriate time 1.7%
10. Max. # of ports to a Z39 db are in use 1.7%
11. All others 10.0%
Ten most frequent EXPLAIN requests:
1. LOCATE (BIO DB) 32.1%
2. GUIDE 14.2%
3. INDEXES 11.3%
4. FIND 9.4%
5. COMMANDS 5.7%
6. DATABASES 4.7%
7. BIOSIS DATABASE 3.8%
8. BIOSIS NEWS 1.9%
9. B380 1.9%
10. Unrecognized term 1.9%
11. All others 13.2%
Ten most frequent HELP situations:
1. Help requested from SET DB command 19.2%
2. First word of command is invalid 17.7%
3. DISPLAY command-first of >1 screen 12.3%
4. FIND command with invalid index name 10.8%
5. FIND command with zero results 10.3%
6. DISPLAY command - last of >1 screen 4.9%
7. FIND command retrieves >1 book 3.9%
8. DISPLAY command-complete in one screen 3.4%
9. DISPLAY command - middle of >1 screen 3.4%
10. F/BR command with invalid search term 3.0%
11. All others 10.8%
Ten most frequent SHOW requests:
1. HISTORY 73.7%
2. SETTINGS 10.5%
3. SEARCH 10.5%
4. BIOSIS NEWS 5.3%
11. All others 0.0%
BIOmm/dd bio MELVYL BIOSIS DATABASES TELNET STATISTICS (weekly)