MELVYL BIOSIS DATABASES TELNET STATISTICS
Time period: 01/20/01 through 01/26/01
1.0 SUMMARY STATISTICS
_______________________
1.1 Total sessions:
____________________
Zero results may indicate no access to the database
Location Library Remote Total
________ _______ ______ _____
Berkeley 124 286 410
Davis 223 9 232
Irvine 36 0 36
Los Angeles 12 41 53
Riverside 24 51 75
San Diego 28 102 130
San Francisco 41 0 41
Santa Barbara 14 33 47
Santa Cruz 13 78 91
Lawrence Berkeley 0 10 10
Lawrence Livermore 0 16 16
Los Alamos 0 0 0
Other - UC 0 27 27
Other-Network UC n/a 553 553
_______ ______ _____
515 1,206 1,721
Relative use of BIOSIS databases:
Number of Number of Number of
Sessions FIND commands Records Displayed
_________ _____________ _________________
BIOSIS 1,500 4,554 60,326
BIO88 221 520 3,221
Per hour usage:
Time Sessions Finds Records Displayed
__________ __________ __________ _________________
12-2 a.m. 9 27 165
2-4 a.m. 5 28 18,950
4-6 a.m. 7 9 14
6-8 a.m. 46 104 897
8-10 a.m. 225 659 6,291
10-12 a.m. 363 1,043 7,561
12-2 p.m. 316 904 8,929
2-4 p.m. 351 1,007 10,055
4-6 p.m. 224 716 6,025
6-8 p.m. 105 272 2,015
8-10 p.m. 38 190 1,335
10-12 p.m. 32 115 1,310
__________ __________ __________ _________________
Total: 1,721 5,074 63,547
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 581 879 1,460
Davis 677 52 729
Irvine 78 0 78
Los Angeles 71 120 191
Riverside 54 121 175
San Diego 82 299 381
San Francisco 131 0 131
Santa Barbara 62 134 196
Santa Cruz 41 282 323
Lawrence Berkeley 0 29 29
Lawrence Livermore 0 66 66
Los Alamos 0 0 0
Other - UC 0 123 123
Other-Network UC n/a 1,192 1,192
_______ ______ _____
1,777 3,297 5,074
1.3 Records displayed
______________________
Zero results may indicate no access to the database
Number of Records Displayed by location:
Location Library Remote Total
________ _______ ______ _____
Berkeley 5,229 8,844 14,073
Davis 5,468 265 5,733
Irvine 860 0 860
Los Angeles 633 1,144 1,777
Riverside 370 1,444 1,814
San Diego 296 4,199 4,495
San Francisco 730 0 730
Santa Barbara 233 1,556 1,789
Santa Cruz 198 3,163 3,361
Lawrence Berkeley 0 184 184
Lawrence Livermore 0 1,147 1,147
Los Alamos 0 0 0
Other - UC 0 1,093 1,093
Other-Network UC n/a 26,491 26,491
_______ ______ _____
14,017 49,530 63,547
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 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
_________________________________________
Median session length (minutes:seconds) 9:40
Average session length (minutes:seconds) 13:40
Longest session recorded (minutes:seconds) 194:37
Average number of searches completed per session 2.9
Retrievals per search - median 9.0
Retrievals per search - average 806.0
Retrievals per search - standard deviation 9076.9
Percent of searches completed with 0 results 24.5%
Percent of searches entered that are long 1.4%
Percent of long searches completed
(includes partial results) 54.9%
Commands entered, by type, excluding errors:
Total Percentage
__________ __________
FIND 4,410 30.5%
DISPLAY (excluding automatic displays) 5,173 35.8%
BROWSE 0 0.0%
HELP 135 0.9%
EXPLAIN 189 1.3%
SET/RESET 927 6.4%
SHOW 50 0.3%
ADD ON (AND, OR, AND NOT) 664 4.6%
LOGON or LOGOFF 1,725 11.9%
COMMENT 0 0.0%
SAVE 660 4.6%
USE 4 0.0%
OTHER 510 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 1,569 32.6% 327 20.8% 20 124.3 537.8
TITLE WORD 743 15.4% 286 38.5% 11 768.3 3105.5
EXACT TITLE 19 0.4% 7 36.8% 2 155.2 501.6
KEYWORD 1,870 38.8% 392 21.0% 32 1554.3 13962.0
JOURNAL 224 4.6% 97 43.3% 415 7759.1 29397.3
EXACT JOURNAL 68 1.4% 26 38.2% 830 1935.6 3398.1
SOURCE 9 0.2% 8 88.9% 101 101.0 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% 8 8.0 0.0
PUBLICATION TYPE 0 0.0% 0 0.0% 0 0.0 0.0
DATE 15 0.3% 3 20.0% 5 80.2 195.0
LANGUAGE 6 0.1% 0 0.0% 139 364.5 530.5
ADDED 1 0.0% 0 0.0% 13 13.0 0.0
ARTICLE 0 0.0% 0 0.0% 0 0.0 0.0
AUTHOR AFFIL. 7 0.1% 2 28.6% 15 17.4 14.7
ACCESSION NO. 0 0.0% 0 0.0% 0 0.0 0.0
ISSN 3 0.1% 2 66.7% 90 90.0 0.0
ISBN 0 0.0% 0 0.0% 0 0.0 0.0
PERIODICAL 128 2.7% 31 24.2% 6 59.7 271.3
EXACT PE 32 0.7% 4 12.5% 3 26.7 79.9
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 123 2.6% 28 22.8% 33 850.8 4804.7
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 414 9.5% 142 34.3% 6 71.7 336.3
Single 3,962 90.5% 918 23.2% 29 1288.7 11619.4
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 3.3%
SHORT 86.4%
LONG 2.0%
TAGS 0.4%
FIELDS 2.4%
BROWSE REVIEW 0.0%
BROWSE SHORT 0.0%
BROWSE LONG 0.0%
PERIODICALS 3.8%
COMMENTS 0.0%
Other 1.7%
2.2 Error, EXPLAIN and HELP statistics
_______________________________________
Percent of commands that contained errors 9.1%
Ten most frequent errors:
1. NS command - no next screen 32.9%
2. First word of command is invalid 27.7%
3. FIND command with invalid index name 10.4%
4. DISPLAY command contains invalid word 4.6%
5. Max. # of ports to a Z39 db are in use 3.9%
6. PS command - no previous screen 3.0%
7. Valid command at an inappropriate time 2.0%
8. Search term missing from search command 1.3%
9. Index invalid in current database 1.2%
10. BROWSE command with invalid index name 1.0%
11. All others 12.1%
Ten most frequent EXPLAIN requests:
1. GUIDE 19.0%
2. FIND 11.6%
3. LOCATE (BIO DB) 9.0%
4. INDEXES 8.5%
5. COMMANDS 6.9%
6. B925 4.8%
7. BIOSIS DATABASE 3.7%
8. CONCEPT CODES 3.7%
9. MAIL 3.2%
10. Unrecognized term 3.2%
11. All others 26.5%
Ten most frequent HELP situations:
1. Help requested from SET DB command 29.0%
2. First word of command is invalid 11.7%
3. DISPLAY command-first of >1 screen 7.1%
4. DISPLAY command - middle of >1 screen 6.8%
5. FIND command with invalid index name 5.6%
6. FIND command with zero results 3.7%
7. DISPLAY command - last of >1 screen 3.7%
8. FIND command retrieves >1 book 3.4%
9. Multi-index search with zero results 2.8%
10. DISPLAY command-complete in one screen 2.5%
11. All others 23.8%
Ten most frequent SHOW requests:
1. HISTORY 68.2%
2. BIOSIS NEWS 6.8%
3. GLOSSARY 4.5%
4. SEARCH 4.5%
5. MAIL STATUS 4.5%
6. SUPERTAXA HIERARCHICAL TABLE 2.3%
7. SUPERTAXA ALPHABETICAL TABLE 2.3%
8. BIOSIS STATISTICS 2.3%
9. B902 2.3%
10. MAIL SETTINGS 2.3%
11. All others 0.0%
BIOmm/dd bio MELVYL BIOSIS DATABASES TELNET STATISTICS (weekly)