MELVYL BIOSIS DATABASES TELNET STATISTICS
Time period: 02/09/02 through 02/15/02
1.0 SUMMARY STATISTICS
_______________________
1.1 Total sessions:
____________________
Zero results may indicate no access to the database
Location Library Remote Total
________ _______ ______ _____
Berkeley 56 284 340
Davis 249 2 251
Irvine 17 0 17
Los Angeles 2 81 83
Riverside 12 9 21
San Diego 18 37 55
San Francisco 25 0 25
Santa Barbara 0 23 23
Santa Cruz 3 34 37
Lawrence Berkeley 0 5 5
Lawrence Livermore 0 14 14
Los Alamos 0 0 0
Other - UC 1 13 14
Other-Network UC n/a 445 445
_______ ______ _____
383 947 1,330
Relative use of BIOSIS databases:
Number of Number of Number of
Sessions FIND commands Records Displayed
_________ _____________ _________________
BIOSIS 1,196 3,623 30,605
BIO88 134 287 1,336
Per hour usage:
Time Sessions Finds Records Displayed
__________ __________ __________ _________________
12-2 a.m. 17 51 292
2-4 a.m. 16 44 401
4-6 a.m. 6 14 32
6-8 a.m. 36 96 814
8-10 a.m. 161 401 1,998
10-12 a.m. 273 822 6,071
12-2 p.m. 216 684 7,032
2-4 p.m. 283 753 5,940
4-6 p.m. 201 689 5,696
6-8 p.m. 95 252 2,615
8-10 p.m. 18 38 541
10-12 p.m. 8 66 509
__________ __________ __________ _________________
Total: 1,330 3,910 31,941
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 179 849 1,028
Davis 938 4 942
Irvine 39 0 39
Los Angeles 6 202 208
Riverside 44 25 69
San Diego 61 106 167
San Francisco 163 0 163
Santa Barbara 0 166 166
Santa Cruz 5 81 86
Lawrence Berkeley 0 23 23
Lawrence Livermore 0 21 21
Los Alamos 0 0 0
Other - UC 1 43 44
Other-Network UC n/a 954 954
_______ ______ _____
1,436 2,474 3,910
1.3 Records displayed
______________________
Zero results may indicate no access to the database
Number of Records Displayed by location:
Location Library Remote Total
________ _______ ______ _____
Berkeley 1,757 7,875 9,632
Davis 8,967 42 9,009
Irvine 223 0 223
Los Angeles 39 2,153 2,192
Riverside 145 240 385
San Diego 460 1,162 1,622
San Francisco 1,227 0 1,227
Santa Barbara 0 1,495 1,495
Santa Cruz 8 903 911
Lawrence Berkeley 0 160 160
Lawrence Livermore 0 192 192
Los Alamos 0 0 0
Other - UC 6 283 289
Other-Network UC n/a 4,604 4,604
_______ ______ _____
12,832 19,109 31,941
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 5.6
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) 9:16
Average session length (minutes:seconds) 13:12
Longest session recorded (minutes:seconds) 293:32
Average number of searches completed per session 2.9
Retrievals per search - median 7.0
Retrievals per search - average 747.1
Retrievals per search - standard deviation 8213.8
Percent of searches completed with 0 results 24.6%
Percent of searches entered that are long 1.9%
Percent of long searches completed
(includes partial results) 70.3%
Commands entered, by type, excluding errors:
Total Percentage
__________ __________
FIND 3,398 30.8%
DISPLAY (excluding automatic displays) 3,932 35.6%
BROWSE 0 0.0%
HELP 159 1.4%
EXPLAIN 151 1.4%
SET/RESET 577 5.2%
SHOW 26 0.2%
ADD ON (AND, OR, AND NOT) 512 4.6%
LOGON or LOGOFF 1,613 14.6%
COMMENT 0 0.0%
SAVE 307 2.8%
USE 1 0.0%
OTHER 364 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 1,167 31.0% 217 18.6% 20 176.0 1004.2
TITLE WORD 704 18.7% 271 38.5% 7 289.6 1647.6
EXACT TITLE 28 0.7% 17 60.7% 2 2.7 2.3
KEYWORD 1,338 35.5% 271 20.3% 24 1434.4 13436.8
JOURNAL 200 5.3% 97 48.5% 569 6418.5 17027.6
EXACT JOURNAL 52 1.4% 30 57.7% 722 10328.8 30392.5
SOURCE 6 0.2% 4 66.7% 257 256.5 276.5
CONFERENCE 1 0.0% 0 0.0% 19 19.0 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 3 0.1% 1 33.3% 10 10.0 11.3
PUBLICATION TYPE 0 0.0% 0 0.0% 0 0.0 0.0
DATE 7 0.2% 3 42.9% 18 14.8 9.4
LANGUAGE 0 0.0% 0 0.0% 0 0.0 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. 10 0.3% 0 0.0% 16 37.7 53.6
ACCESSION NO. 1 0.0% 0 0.0% 1 1.0 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 130 3.4% 22 16.9% 5 323.4 1810.3
EXACT PE 28 0.7% 4 14.3% 4 44.2 118.6
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 95 2.5% 20 21.1% 23 389.0 1579.2
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 379 11.2% 113 29.8% 7 100.4 782.1
Single 2,999 88.8% 726 24.2% 26 1198.5 10476.8
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 2.7%
SHORT 85.3%
LONG 1.9%
TAGS 0.5%
FIELDS 3.1%
BROWSE REVIEW 0.0%
BROWSE SHORT 0.0%
BROWSE LONG 0.0%
PERIODICALS 5.1%
COMMENTS 0.0%
Other 1.5%
2.2 Error, EXPLAIN and HELP statistics
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Percent of commands that contained errors 9.4%
Ten most frequent errors:
1. NS command - no next screen 29.0%
2. First word of command is invalid 28.7%
3. FIND command with invalid index name 11.7%
4. PS command - no previous screen 4.9%
5. Search term missing from search command 3.9%
6. DISPLAY command - no FIND results 3.5%
7. Valid command at an inappropriate time 2.5%
8. DATE search with unrecognized word 2.3%
9. DISPLAY command contains invalid word 1.6%
10. Index invalid in current database 1.2%
11. All others 10.7%
Ten most frequent EXPLAIN requests:
1. GUIDE 34.4%
2. LOCATE (BIO DB) 18.5%
3. FIND 10.6%
4. INDEXES 6.0%
5. Unrecognized term 5.3%
6. DATABASES 4.0%
7. COMMANDS 2.6%
8. SAVE 2.6%
9. DISPLAY 2.0%
10. BIOSIS DATABASE 1.3%
11. All others 12.6%
Ten most frequent HELP situations:
1. Help requested from SET DB command 30.3%
2. First word of command is invalid 14.8%
3. FIND command with invalid index name 12.3%
4. DISPLAY command-first of >1 screen 6.8%
5. FIND command with zero results 5.8%
6. DISPLAY command - middle of >1 screen 4.8%
7. DISPLAY command - last of >1 screen 3.9%
8. FIND command retrieves >1 book 2.3%
9. NS command - no next screen 1.9%
10. DISPLAY command-complete in one screen 1.6%
11. All others 15.5%
Ten most frequent SHOW requests:
1. HISTORY 48.0%
2. SEARCH 24.0%
3. GLOSSARY 12.0%
4. BIOSIS NEWS 4.0%
5. 0415 4.0%
6. TIMEOUT SETTING 4.0%
7. DATABASES 4.0%
11. All others 0.0%
BIOmm/dd bio MELVYL BIOSIS DATABASES TELNET STATISTICS (weekly)