MELVYL BIOSIS DATABASES TELNET STATISTICS
Time period: 11/25/00 through 12/01/00
1.0 SUMMARY STATISTICS
_______________________
1.1 Total sessions:
____________________
Zero results may indicate no access to the database
Location Library Remote Total
________ _______ ______ _____
Berkeley 305 369 674
Davis 186 41 227
Irvine 34 0 34
Los Angeles 39 47 86
Riverside 31 52 83
San Diego 33 70 103
San Francisco 53 0 53
Santa Barbara 26 25 51
Santa Cruz 23 80 103
Lawrence Berkeley 0 15 15
Lawrence Livermore 0 11 11
Los Alamos 0 0 0
Other - UC 0 41 41
Other-Network UC n/a 451 451
_______ ______ _____
730 1,202 1,932
Relative use of BIOSIS databases:
Number of Number of Number of
Sessions FIND commands Records Displayed
_________ _____________ _________________
BIOSIS 1,736 5,344 47,726
BIO88 196 414 3,078
Per hour usage:
Time Sessions Finds Records Displayed
__________ __________ __________ _________________
12-2 a.m. 10 92 537
2-4 a.m. 6 46 214
4-6 a.m. 11 34 329
6-8 a.m. 51 147 1,137
8-10 a.m. 217 501 4,660
10-12 a.m. 350 980 7,843
12-2 p.m. 322 899 9,651
2-4 p.m. 438 1,275 10,359
4-6 p.m. 296 932 8,026
6-8 p.m. 126 444 3,724
8-10 p.m. 60 259 2,888
10-12 p.m. 45 149 1,436
__________ __________ __________ _________________
Total: 1,932 5,758 50,804
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 1,105 1,301 2,406
Davis 674 156 830
Irvine 65 0 65
Los Angeles 126 164 290
Riverside 99 108 207
San Diego 71 187 258
San Francisco 142 0 142
Santa Barbara 65 99 164
Santa Cruz 136 178 314
Lawrence Berkeley 0 44 44
Lawrence Livermore 0 23 23
Los Alamos 0 0 0
Other - UC 0 110 110
Other-Network UC n/a 905 905
_______ ______ _____
2,483 3,275 5,758
1.3 Records displayed
______________________
Zero results may indicate no access to the database
Number of Records Displayed by location:
Location Library Remote Total
________ _______ ______ _____
Berkeley 10,701 12,149 22,850
Davis 5,335 1,133 6,468
Irvine 807 0 807
Los Angeles 1,276 1,122 2,398
Riverside 1,923 680 2,603
San Diego 300 2,551 2,851
San Francisco 930 0 930
Santa Barbara 248 825 1,073
Santa Cruz 620 1,305 1,925
Lawrence Berkeley 0 311 311
Lawrence Livermore 0 681 681
Los Alamos 0 0 0
Other - UC 0 1,351 1,351
Other-Network UC n/a 6,556 6,556
_______ ______ _____
22,140 28,664 50,804
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 7.1
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) 6:58
Average session length (minutes:seconds) 12:31
Longest session recorded (minutes:seconds) 243:45
Average number of searches completed per session 3.0
Retrievals per search - median 9.0
Retrievals per search - average 966.8
Retrievals per search - standard deviation 7999.7
Percent of searches completed with 0 results 23.8%
Percent of searches entered that are long 1.5%
Percent of long searches completed
(includes partial results) 60.5%
Commands entered, by type, excluding errors:
Total Percentage
__________ __________
FIND 5,125 31.1%
DISPLAY (excluding automatic displays) 5,978 36.2%
BROWSE 0 0.0%
HELP 322 2.0%
EXPLAIN 285 1.7%
SET/RESET 882 5.3%
SHOW 52 0.3%
ADD ON (AND, OR, AND NOT) 633 3.8%
LOGON or LOGOFF 2,219 13.4%
COMMENT 0 0.0%
SAVE 418 2.5%
USE 1 0.0%
OTHER 590 3.6%
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 1,575 28.1% 292 18.5% 22 205.8 1391.9
TITLE WORD 913 16.3% 345 37.8% 11 439.2 2237.5
EXACT TITLE 29 0.5% 17 58.6% 2 621.7 1900.8
KEYWORD 2,183 39.0% 381 17.4% 32 1967.0 12270.0
JOURNAL 357 6.4% 152 42.6% 681 5640.4 19513.6
EXACT JOURNAL 94 1.7% 40 42.6% 1,564 4100.7 6001.2
SOURCE 4 0.1% 3 75.0% 64 64.0 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% 1 1.0 0.0
PUBLICATION TYPE 0 0.0% 0 0.0% 0 0.0 0.0
DATE 14 0.2% 3 21.4% 3 6.0 6.6
LANGUAGE 12 0.2% 0 0.0% 47 50.7 51.4
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. 8 0.1% 1 12.5% 581 739.3 748.5
ACCESSION NO. 1 0.0% 1 100% 0 0.0 0.0
ISSN 1 0.0% 0 0.0% 2,112 2112.0 0.0
ISBN 0 0.0% 0 0.0% 0 0.0 0.0
PERIODICAL 230 4.1% 42 18.3% 5 153.4 1339.2
EXACT PE 22 0.4% 5 22.7% 8 24.5 47.1
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 159 2.8% 33 20.8% 24 162.4 379.7
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 474 9.3% 142 30.0% 6 136.3 856.8
Single 4,611 90.7% 1,019 22.1% 31 1505.5 10045.8
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 2.1%
SHORT 85.8%
LONG 1.4%
TAGS 0.0%
FIELDS 1.7%
BROWSE REVIEW 0.0%
BROWSE SHORT 0.0%
BROWSE LONG 0.0%
PERIODICALS 6.4%
COMMENTS 0.0%
Other 2.5%
2.2 Error, EXPLAIN and HELP statistics
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Percent of commands that contained errors 11.6%
Ten most frequent errors:
1. NS command - no next screen 31.9%
2. First word of command is invalid 28.1%
3. FIND command with invalid index name 10.7%
4. PS command - no previous screen 4.6%
5. DISPLAY command contains invalid word 3.6%
6. Max. # of ports to a Z39 db are in use 2.9%
7. Search term missing from search command 2.4%
8. Valid command at an inappropriate time 1.4%
9. Index invalid in current database 1.4%
10. DATE search with unrecognized word 1.4%
11. All others 11.7%
Ten most frequent EXPLAIN requests:
1. LOCATE (BIO DB) 20.4%
2. GUIDE 18.9%
3. FIND 10.9%
4. COMMANDS 10.5%
5. INDEXES 5.3%
6. Unrecognized term 4.9%
7. BIOSIS DATABASE 3.5%
8. DISPLAY 3.5%
9. ADDON SEARCH 2.8%
10. MAIL 2.5%
11. All others 16.8%
Ten most frequent HELP situations:
1. Help requested from SET DB command 23.6%
2. First word of command is invalid 15.3%
3. FIND command with invalid index name 11.4%
4. DISPLAY command-first of >1 screen 7.6%
5. FIND command with zero results 4.8%
6. FIND command retrieves >1 book 3.8%
7. DISPLAY command - last of >1 screen 3.6%
8. DISPLAY command - middle of >1 screen 3.5%
9. DISPLAY command-complete in one screen 3.3%
10. NS command - no next screen 3.1%
11. All others 20.1%
Ten most frequent SHOW requests:
1. HISTORY 56.9%
2. SEARCH 21.6%
3. BIOSIS NEWS 9.8%
4. SETTINGS 3.9%
5. MELVYL 2.0%
6. GLOSSARY 2.0%
7. SYSTEM NEWS 2.0%
8. MAIL STATUS 2.0%
11. All others 0.0%
BIOmm/dd bio MELVYL BIOSIS DATABASES TELNET STATISTICS (weekly)