MELVYL BIOSIS DATABASES TELNET STATISTICS
Time period: 10/06/01 through 10/12/01
1.0 SUMMARY STATISTICS
_______________________
1.1 Total sessions:
____________________
Zero results may indicate no access to the database
Location Library Remote Total
________ _______ ______ _____
Berkeley 46 266 312
Davis 126 0 126
Irvine 14 0 14
Los Angeles 0 43 43
Riverside 8 21 29
San Diego 13 31 44
San Francisco 34 0 34
Santa Barbara 21 43 64
Santa Cruz 2 36 38
Lawrence Berkeley 0 1 1
Lawrence Livermore 0 8 8
Los Alamos 0 0 0
Other - UC 0 17 17
Other-Network UC n/a 374 374
_______ ______ _____
264 840 1,104
Relative use of BIOSIS databases:
Number of Number of Number of
Sessions FIND commands Records Displayed
_________ _____________ _________________
BIOSIS 941 2,656 26,982
BIO88 163 348 2,049
Per hour usage:
Time Sessions Finds Records Displayed
__________ __________ __________ _________________
12-2 a.m. 5 11 335
2-4 a.m. 3 9 117
4-6 a.m. 7 16 42
6-8 a.m. 22 95 775
8-10 a.m. 158 404 3,108
10-12 a.m. 199 447 5,147
12-2 p.m. 204 543 5,649
2-4 p.m. 216 606 5,693
4-6 p.m. 165 487 3,668
6-8 p.m. 56 188 2,481
8-10 p.m. 40 137 1,394
10-12 p.m. 29 61 622
__________ __________ __________ _________________
Total: 1,104 3,004 29,031
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 176 917 1,093
Davis 475 0 475
Irvine 25 0 25
Los Angeles 0 118 118
Riverside 20 67 87
San Diego 80 72 152
San Francisco 118 0 118
Santa Barbara 72 86 158
Santa Cruz 2 98 100
Lawrence Berkeley 0 2 2
Lawrence Livermore 0 25 25
Los Alamos 0 0 0
Other - UC 0 19 19
Other-Network UC n/a 632 632
_______ ______ _____
968 2,036 3,004
1.3 Records displayed
______________________
Zero results may indicate no access to the database
Number of Records Displayed by location:
Location Library Remote Total
________ _______ ______ _____
Berkeley 2,272 10,801 13,073
Davis 4,207 0 4,207
Irvine 295 0 295
Los Angeles 0 1,372 1,372
Riverside 164 1,246 1,410
San Diego 51 496 547
San Francisco 860 0 860
Santa Barbara 291 487 778
Santa Cruz 21 1,130 1,151
Lawrence Berkeley 0 0 0
Lawrence Livermore 0 237 237
Los Alamos 0 0 0
Other - UC 0 132 132
Other-Network UC n/a 4,969 4,969
_______ ______ _____
8,161 20,870 29,031
1.4 Response time
__________________
Search response time from receipt of command at
DLA until transmission of response:
Average in seconds 1.0
Standard deviation in seconds 3.9
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) 10:55
Average session length (minutes:seconds) 12:58
Longest session recorded (minutes:seconds) 116:07
Average number of searches completed per session 2.7
Retrievals per search - median 8.0
Retrievals per search - average 973.2
Retrievals per search - standard deviation 9867.3
Percent of searches completed with 0 results 25.6%
Percent of searches entered that are long 1.9%
Percent of long searches completed
(includes partial results) 80.7%
Commands entered, by type, excluding errors:
Total Percentage
__________ __________
FIND 2,568 30.5%
DISPLAY (excluding automatic displays) 2,944 34.9%
BROWSE 0 0.0%
HELP 109 1.3%
EXPLAIN 123 1.5%
SET/RESET 635 7.5%
SHOW 25 0.3%
ADD ON (AND, OR, AND NOT) 436 5.2%
LOGON or LOGOFF 1,033 12.3%
COMMENT 0 0.0%
SAVE 291 3.5%
USE 0 0.0%
OTHER 260 3.1%
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 1,014 34.9% 197 19.4% 22 141.5 453.6
TITLE WORD 605 20.8% 242 40.0% 8 694.8 5408.6
EXACT TITLE 12 0.4% 6 50.0% 1 1.7 1.2
KEYWORD 841 29.0% 160 19.0% 37 2379.7 17565.6
JOURNAL 139 4.8% 72 51.8% 323 7402.5 25778.5
EXACT JOURNAL 81 2.8% 42 51.9% 123 8396.6 21120.3
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 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% 6 6.0 0.0
PUBLICATION TYPE 0 0.0% 0 0.0% 0 0.0 0.0
DATE 14 0.5% 2 14.3% 6 25.7 40.8
LANGUAGE 1 0.0% 0 0.0% 2,020 2020.0 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. 5 0.2% 1 20.0% 11 13.3 12.4
ACCESSION NO. 16 0.6% 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 84 2.9% 21 25.0% 6 933.8 5009.6
EXACT PE 14 0.5% 1 7.1% 3 3.3 2.0
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 77 2.7% 24 31.2% 8 285.7 1075.3
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 327 12.8% 113 34.6% 4 85.1 550.2
Single 2,226 87.2% 533 23.9% 33 1684.5 13060.0
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 3.3%
SHORT 84.5%
LONG 2.4%
TAGS 0.6%
FIELDS 2.6%
BROWSE REVIEW 0.0%
BROWSE SHORT 0.0%
BROWSE LONG 0.0%
PERIODICALS 4.2%
COMMENTS 0.0%
Other 2.3%
2.2 Error, EXPLAIN and HELP statistics
_______________________________________
Percent of commands that contained errors 9.2%
Ten most frequent errors:
1. NS command - no next screen 32.3%
2. First word of command is invalid 28.1%
3. FIND command with invalid index name 9.7%
4. PS command - no previous screen 5.0%
5. DISPLAY command contains invalid word 4.9%
6. DATE search with unrecognized word 3.5%
7. Valid command at an inappropriate time 2.0%
8. Search term missing from search command 1.9%
9. Max. # of ports to a Z39 db are in use 0.9%
10. DISPLAY command-record numbers too large 0.8%
11. All others 11.0%
Ten most frequent EXPLAIN requests:
1. LOCATE (BIO DB) 19.5%
2. INDEXES 13.8%
3. GUIDE 12.2%
4. FIND 8.9%
5. BIOSIS DATABASE 5.7%
6. ADDON SEARCH 5.7%
7. Unrecognized term 4.1%
8. DATABASES 4.1%
9. COMMANDS 3.3%
10. DATE 3.3%
11. All others 19.5%
Ten most frequent HELP situations:
1. Help requested from SET DB command 17.2%
2. DISPLAY command-first of >1 screen 12.1%
3. First word of command is invalid 11.2%
4. FIND command with invalid index name 10.8%
5. FIND command retrieves >1 book 6.0%
6. DISPLAY command - middle of >1 screen 5.6%
7. NS command - no next screen 4.7%
8. FIND command with zero results 3.9%
9. PS command - no previous screen 3.4%
10. DISPLAY command-complete in one screen 3.4%
11. All others 21.6%
Ten most frequent SHOW requests:
1. HISTORY 48.0%
2. MAIL STATUS 20.0%
3. SEARCH 12.0%
4. BIOSIS NEWS 8.0%
5. SYSTEM NEWS 8.0%
6. UPDATE 4.0%
11. All others 0.0%
BIOmm/dd bio MELVYL BIOSIS DATABASES TELNET STATISTICS (weekly)