MELVYL BIOSIS DATABASES TELNET STATISTICS
Time period: 01/13/01 through 01/19/01
1.0 SUMMARY STATISTICS
_______________________
1.1 Total sessions:
____________________
Zero results may indicate no access to the database
Location Library Remote Total
________ _______ ______ _____
Berkeley 89 274 363
Davis 216 4 220
Irvine 33 0 33
Los Angeles 14 23 37
Riverside 13 43 56
San Diego 32 41 73
San Francisco 43 0 43
Santa Barbara 5 38 43
Santa Cruz 8 62 70
Lawrence Berkeley 0 3 3
Lawrence Livermore 0 8 8
Los Alamos 0 0 0
Other - UC 0 23 23
Other-Network UC n/a 432 432
_______ ______ _____
453 951 1,404
Relative use of BIOSIS databases:
Number of Number of Number of
Sessions FIND commands Records Displayed
_________ _____________ _________________
BIOSIS 1,230 3,467 32,081
BIO88 174 402 3,391
Per hour usage:
Time Sessions Finds Records Displayed
__________ __________ __________ _________________
12-2 a.m. 5 31 281
2-4 a.m. 6 12 39
4-6 a.m. 3 3 53
6-8 a.m. 26 61 1,462
8-10 a.m. 154 391 3,353
10-12 a.m. 260 679 5,706
12-2 p.m. 235 556 5,459
2-4 p.m. 315 857 6,856
4-6 p.m. 249 774 6,261
6-8 p.m. 81 256 3,421
8-10 p.m. 38 144 2,035
10-12 p.m. 32 105 546
__________ __________ __________ _________________
Total: 1,404 3,869 35,472
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 238 1,048 1,286
Davis 704 2 706
Irvine 108 0 108
Los Angeles 24 44 68
Riverside 26 86 112
San Diego 87 118 205
San Francisco 125 0 125
Santa Barbara 24 89 113
Santa Cruz 57 221 278
Lawrence Berkeley 0 9 9
Lawrence Livermore 0 31 31
Los Alamos 0 0 0
Other - UC 0 42 42
Other-Network UC n/a 786 786
_______ ______ _____
1,393 2,476 3,869
1.3 Records displayed
______________________
Zero results may indicate no access to the database
Number of Records Displayed by location:
Location Library Remote Total
________ _______ ______ _____
Berkeley 2,589 11,082 13,671
Davis 5,647 29 5,676
Irvine 1,298 0 1,298
Los Angeles 231 255 486
Riverside 134 1,461 1,595
San Diego 187 1,314 1,501
San Francisco 1,326 0 1,326
Santa Barbara 464 621 1,085
Santa Cruz 348 3,071 3,419
Lawrence Berkeley 0 34 34
Lawrence Livermore 0 349 349
Los Alamos 0 0 0
Other - UC 0 256 256
Other-Network UC n/a 4,776 4,776
_______ ______ _____
12,224 23,248 35,472
1.4 Response time
__________________
Search response time from receipt of command at
DLA until transmission of response:
Average in seconds 1.1
Standard deviation in seconds 4.8
Display response time from receipt of command at
DLA until transmission of a complete screen:
Average in seconds 0.1
Standard deviation in seconds 0.2
2.0 BIOSIS Databases Detailed Statistics
_________________________________________
Median session length (minutes:seconds) 7:52
Average session length (minutes:seconds) 13:39
Longest session recorded (minutes:seconds) 338:58
Average number of searches completed per session 2.7
Retrievals per search - median 11.0
Retrievals per search - average 940.2
Retrievals per search - standard deviation 10212
Percent of searches completed with 0 results 23.1%
Percent of searches entered that are long 2.4%
Percent of long searches completed
(includes partial results) 63.0%
Commands entered, by type, excluding errors:
Total Percentage
__________ __________
FIND 3,240 29.0%
DISPLAY (excluding automatic displays) 4,019 36.0%
BROWSE 3 0.0%
HELP 114 1.0%
EXPLAIN 137 1.2%
SET/RESET 720 6.4%
SHOW 60 0.5%
ADD ON (AND, OR, AND NOT) 629 5.6%
LOGON or LOGOFF 1,452 13.0%
COMMENT 0 0.0%
SAVE 400 3.6%
USE 2 0.0%
OTHER 394 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 1,348 37.2% 268 19.9% 25 216.0 1262.3
TITLE WORD 598 16.5% 267 44.6% 10 553.7 2493.7
EXACT TITLE 21 0.6% 12 57.1% 2 56.6 95.3
KEYWORD 1,164 32.1% 196 16.8% 42 2522.4 19616.7
JOURNAL 140 3.9% 53 37.9% 332 2929.3 9797.5
EXACT JOURNAL 45 1.2% 18 40.0% 361 1755.4 2573.6
SOURCE 3 0.1% 2 66.7% 1 1.0 0.0
CONFERENCE 2 0.1% 2 100% 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 2 0.1% 0 0.0% 816 816.0 297.0
MAJ CONCEPT CDES 0 0.0% 0 0.0% 0 0.0 0.0
CONCEPT CODES 5 0.1% 1 20.0% 174 186.5 131.2
PUBLICATION TYPE 0 0.0% 0 0.0% 0 0.0 0.0
DATE 14 0.4% 5 35.7% 2 9.8 14.9
LANGUAGE 7 0.2% 1 14.3% 170 190.7 130.5
ADDED 2 0.1% 1 50.0% 23 23.0 0.0
ARTICLE 0 0.0% 0 0.0% 0 0.0 0.0
AUTHOR AFFIL. 5 0.1% 1 20.0% 309 6732.8 13043.5
ACCESSION NO. 0 0.0% 0 0.0% 0 0.0 0.0
ISSN 1 0.0% 1 100% 0 0.0 0.0
ISBN 0 0.0% 0 0.0% 0 0.0 0.0
PERIODICAL 109 3.0% 19 17.4% 6 331.8 1844.9
EXACT PE 17 0.5% 3 17.6% 3 9.5 13.0
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 138 3.8% 12 8.7% 54 766.9 2819.6
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 385 12.0% 123 31.9% 8 271.6 1817.6
Single 2,812 88.0% 608 21.6% 36 1439.9 13257.4
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 3 100% 1 33.3% 3 2.5 2.1
DISPLAY commands, by type, excluding automatic displays:
REVIEW 3.1%
SHORT 85.6%
LONG 2.3%
TAGS 0.6%
FIELDS 1.8%
BROWSE REVIEW 0.0%
BROWSE SHORT 0.0%
BROWSE LONG 0.0%
PERIODICALS 4.3%
COMMENTS 0.0%
Other 2.3%
2.2 Error, EXPLAIN and HELP statistics
_______________________________________
Percent of commands that contained errors 9.4%
Ten most frequent errors:
1. NS command - no next screen 33.3%
2. First word of command is invalid 27.5%
3. FIND command with invalid index name 10.4%
4. DISPLAY command contains invalid word 3.5%
5. Max. # of ports to a Z39 db are in use 3.5%
6. PS command - no previous screen 2.8%
7. Search term missing from search command 1.9%
8. DATE search with unrecognized word 1.7%
9. DISPLAY command-record numbers too large 1.6%
10. Valid command at an inappropriate time 1.2%
11. All others 12.4%
Ten most frequent EXPLAIN requests:
1. GUIDE 19.7%
2. FIND 13.1%
3. INDEXES 10.9%
4. BIOSIS DATABASE 8.0%
5. LOCATE (BIO DB) 7.3%
6. Unrecognized term 7.3%
7. DATE 3.6%
8. MAIL 3.6%
9. DATABASES 3.6%
10. COMMANDS 2.9%
11. All others 19.7%
Ten most frequent HELP situations:
1. Help requested from SET DB command 27.9%
2. First word of command is invalid 15.5%
3. FIND command with invalid index name 10.4%
4. FIND command with zero results 8.8%
5. DISPLAY command-first of >1 screen 6.0%
6. DISPLAY command - middle of >1 screen 3.6%
7. FIND command retrieves >1 book 3.2%
8. DISPLAY command-complete in one screen 3.2%
9. NS command - no next screen 2.4%
10. DISPLAY command - last of >1 screen 2.0%
11. All others 17.1%
Ten most frequent SHOW requests:
1. HISTORY 54.8%
2. MAIL STATUS 19.4%
3. GLOSSARY 6.5%
4. MAIL SETTINGS 6.5%
5. SETTINGS 3.2%
6. B902 3.2%
7. SEARCH 3.2%
11. All others 3.2%
BIOmm/dd bio MELVYL BIOSIS DATABASES TELNET STATISTICS (weekly)