MELVYL BIOSIS DATABASES TELNET STATISTICS
Time period: 12/30/00 through 01/05/01
1.0 SUMMARY STATISTICS
_______________________
1.1 Total sessions:
____________________
Zero results may indicate no access to the database
Location Library Remote Total
________ _______ ______ _____
Berkeley 48 236 284
Davis 153 12 165
Irvine 19 0 19
Los Angeles 10 53 63
Riverside 9 29 38
San Diego 14 42 56
San Francisco 44 0 44
Santa Barbara 1 74 75
Santa Cruz 16 54 70
Lawrence Berkeley 0 11 11
Lawrence Livermore 0 1 1
Los Alamos 0 0 0
Other - UC 1 3 4
Other-Network UC n/a 353 353
_______ ______ _____
315 868 1,183
Relative use of BIOSIS databases:
Number of Number of Number of
Sessions FIND commands Records Displayed
_________ _____________ _________________
BIOSIS 1,028 3,052 33,634
BIO88 155 354 1,415
Per hour usage:
Time Sessions Finds Records Displayed
__________ __________ __________ _________________
12-2 a.m. 9 25 153
2-4 a.m. 7 11 190
4-6 a.m. 15 44 182
6-8 a.m. 40 153 1,248
8-10 a.m. 104 241 2,204
10-12 a.m. 197 543 3,960
12-2 p.m. 218 539 5,692
2-4 p.m. 224 722 10,626
4-6 p.m. 218 651 7,932
6-8 p.m. 56 188 1,887
8-10 p.m. 50 144 535
10-12 p.m. 45 145 440
__________ __________ __________ _________________
Total: 1,183 3,406 35,049
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 311 772 1,083
Davis 479 44 523
Irvine 42 0 42
Los Angeles 17 136 153
Riverside 21 95 116
San Diego 45 114 159
San Francisco 171 0 171
Santa Barbara 2 233 235
Santa Cruz 46 149 195
Lawrence Berkeley 0 26 26
Lawrence Livermore 0 1 1
Los Alamos 0 0 0
Other - UC 2 4 6
Other-Network UC n/a 696 696
_______ ______ _____
1,136 2,270 3,406
1.3 Records displayed
______________________
Zero results may indicate no access to the database
Number of Records Displayed by location:
Location Library Remote Total
________ _______ ______ _____
Berkeley 2,877 8,456 11,333
Davis 5,998 175 6,173
Irvine 247 0 247
Los Angeles 106 1,217 1,323
Riverside 92 709 801
San Diego 274 930 1,204
San Francisco 1,668 0 1,668
Santa Barbara 10 659 669
Santa Cruz 126 989 1,115
Lawrence Berkeley 0 157 157
Lawrence Livermore 0 5 5
Los Alamos 0 0 0
Other - UC 15 10 25
Other-Network UC n/a 10,329 10,329
_______ ______ _____
11,413 23,636 35,049
1.4 Response time
__________________
Search response time from receipt of command at
DLA until transmission of response:
Average in seconds 0.7
Standard deviation in seconds 3.0
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) 10:00
Average session length (minutes:seconds) 18:49
Longest session recorded (minutes:seconds) 1240
Average number of searches completed per session 2.9
Retrievals per search - median 9.0
Retrievals per search - average 3115.4
Retrievals per search - standard deviation 36946
Percent of searches completed with 0 results 22.3%
Percent of searches entered that are long 2.6%
Percent of long searches completed
(includes partial results) 73.0%
Commands entered, by type, excluding errors:
Total Percentage
__________ __________
FIND 2,947 29.2%
DISPLAY (excluding automatic displays) 3,706 36.7%
BROWSE 0 0.0%
HELP 93 0.9%
EXPLAIN 103 1.0%
SET/RESET 670 6.6%
SHOW 42 0.4%
ADD ON (AND, OR, AND NOT) 459 4.5%
LOGON or LOGOFF 1,139 11.3%
COMMENT 0 0.0%
SAVE 598 5.9%
USE 4 0.0%
OTHER 328 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 1,417 42.1% 261 18.4% 20 119.4 355.4
TITLE WORD 543 16.1% 205 37.8% 7 352.2 1995.8
EXACT TITLE 11 0.3% 9 81.8% 2 1.5 0.7
KEYWORD 869 25.8% 153 17.6% 41 3105.8 23438.6
JOURNAL 118 3.5% 43 36.4% 136 9806.8 31684.9
EXACT JOURNAL 69 2.0% 28 40.6% 17 1106.0 3013.0
SOURCE 0 0.0% 0 0.0% 0 0.0 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 2 0.1% 0 0.0% 375 374.5 473.1
MAJ CONCEPT CDES 0 0.0% 0 0.0% 0 0.0 0.0
CONCEPT CODES 0 0.0% 0 0.0% 0 0.0 0.0
PUBLICATION TYPE 1 0.0% 1 100% 0 0.0 0.0
DATE 10 0.3% 1 10.0% 4 20.3 27.6
LANGUAGE 23 0.7% 0 0.0% 519 3255.8 5835.6
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. 9 0.3% 3 33.3% 14 1800.5 4349.2
ACCESSION NO. 0 0.0% 0 0.0% 0 0.0 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 111 3.3% 28 25.2% 6 548.3 2350.4
EXACT PE 26 0.8% 4 15.4% 2 13.0 43.9
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 158 4.7% 24 15.2% 14 1283.0 8091.1
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 400 13.7% 118 29.5% 8 375.6 1913.9
Single 2,520 86.3% 514 20.4% 29 1671.7 15568.0
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 2.5%
SHORT 85.5%
LONG 1.9%
TAGS 1.5%
FIELDS 1.6%
BROWSE REVIEW 0.0%
BROWSE SHORT 0.0%
BROWSE LONG 0.0%
PERIODICALS 4.1%
COMMENTS 0.0%
Other 2.9%
2.2 Error, EXPLAIN and HELP statistics
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Percent of commands that contained errors 8.2%
Ten most frequent errors:
1. NS command - no next screen 32.3%
2. First word of command is invalid 28.5%
3. FIND command with invalid index name 10.2%
4. Max. # of ports to a Z39 db are in use 4.0%
5. DISPLAY command contains invalid word 3.9%
6. PS command - no previous screen 3.1%
7. Search term missing from search command 2.0%
8. DATE search with unrecognized word 1.8%
9. DISPLAY command - no FIND results 1.4%
10. Index invalid in current database 1.4%
11. All others 11.4%
Ten most frequent EXPLAIN requests:
1. LOCATE (BIO DB) 16.5%
2. GUIDE 10.7%
3. FIND 9.7%
4. Unrecognized term 8.7%
5. COMMANDS 7.8%
6. INDEXES 6.8%
7. MAIL 6.8%
8. BIOSIS BACKFILES 2.9%
9. B918 2.9%
10. ADDON SEARCH 2.9%
11. All others 24.3%
Ten most frequent HELP situations:
1. Help requested from SET DB command 16.8%
2. FIND command with invalid index name 13.3%
3. FIND command retrieves >1 book 11.2%
4. DISPLAY command - middle of >1 screen 8.2%
5. First word of command is invalid 6.1%
6. FIND command with zero results 5.1%
7. DISPLAY command-complete in one screen 4.1%
8. DISPLAY command-first of >1 screen 3.6%
9. 117 3.1%
10. PS command - no previous screen 2.6%
11. All others 26.0%
Ten most frequent SHOW requests:
1. HISTORY 58.6%
2. SEARCH 13.8%
3. SUPERTAXA HIERARCHICAL TABLE 3.4%
4. STOPWORDS 3.4%
5. SUPERTAXA ALPHABETICAL TABLE 3.4%
6. BIOSIS NEWS 3.4%
7. STANFORD UNIVERSITY PASSWORDS 3.4%
8. SYSTEM NEWS 3.4%
9. MAIL SETTINGS 3.4%
10. DATABASES 3.4%
11. All others 0.0%
BIOmm/dd bio MELVYL BIOSIS DATABASES TELNET STATISTICS (weekly)