MELVYL BIOSIS DATABASES TELNET STATISTICS
Time period: 12/22/01 through 12/28/01
1.0 SUMMARY STATISTICS
_______________________
1.1 Total sessions:
____________________
Zero results may indicate no access to the database
Location Library Remote Total
________ _______ ______ _____
Berkeley 0 45 45
Davis 24 0 24
Irvine 1 0 1
Los Angeles 1 15 16
Riverside 0 37 37
San Diego 5 13 18
San Francisco 5 0 5
Santa Barbara 0 1 1
Santa Cruz 0 0 0
Lawrence Berkeley 0 0 0
Lawrence Livermore 0 0 0
Los Alamos 0 0 0
Other - UC 0 2 2
Other-Network UC n/a 115 115
_______ ______ _____
36 228 264
Relative use of BIOSIS databases:
Number of Number of Number of
Sessions FIND commands Records Displayed
_________ _____________ _________________
BIOSIS 213 591 4,149
BIO88 51 118 495
Per hour usage:
Time Sessions Finds Records Displayed
__________ __________ __________ _________________
12-2 a.m. 5 18 245
2-4 a.m. 0 0 0
4-6 a.m. 0 0 0
6-8 a.m. 5 14 77
8-10 a.m. 44 101 608
10-12 a.m. 93 235 1,288
12-2 p.m. 51 123 1,078
2-4 p.m. 35 55 175
4-6 p.m. 19 95 585
6-8 p.m. 4 28 326
8-10 p.m. 7 33 205
10-12 p.m. 1 7 57
__________ __________ __________ _________________
Total: 264 709 4,644
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 0 121 121
Davis 140 0 140
Irvine 1 0 1
Los Angeles 2 25 27
Riverside 0 134 134
San Diego 12 27 39
San Francisco 21 0 21
Santa Barbara 0 8 8
Santa Cruz 0 0 0
Lawrence Berkeley 0 0 0
Lawrence Livermore 0 0 0
Los Alamos 0 0 0
Other - UC 0 3 3
Other-Network UC n/a 215 215
_______ ______ _____
176 533 709
1.3 Records displayed
______________________
Zero results may indicate no access to the database
Number of Records Displayed by location:
Location Library Remote Total
________ _______ ______ _____
Berkeley 0 1,767 1,767
Davis 1,054 0 1,054
Irvine 22 0 22
Los Angeles 11 216 227
Riverside 0 601 601
San Diego 14 386 400
San Francisco 98 0 98
Santa Barbara 0 64 64
Santa Cruz 0 0 0
Lawrence Berkeley 0 0 0
Lawrence Livermore 0 0 0
Los Alamos 0 0 0
Other - UC 0 3 3
Other-Network UC n/a 408 408
_______ ______ _____
1,199 3,445 4,644
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 2.3
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) 12:25
Average session length (minutes:seconds) 17:17
Longest session recorded (minutes:seconds) 81:03
Average number of searches completed per session 2.7
Retrievals per search - median 5.0
Retrievals per search - average 1880.4
Retrievals per search - standard deviation 21613
Percent of searches completed with 0 results 27.5%
Percent of searches entered that are long 1.7%
Percent of long searches completed
(includes partial results) 100%
Commands entered, by type, excluding errors:
Total Percentage
__________ __________
FIND 591 31.1%
DISPLAY (excluding automatic displays) 737 38.7%
BROWSE 0 0.0%
HELP 2 0.1%
EXPLAIN 8 0.4%
SET/RESET 177 9.3%
SHOW 5 0.3%
ADD ON (AND, OR, AND NOT) 118 6.2%
LOGON or LOGOFF 189 9.9%
COMMENT 0 0.0%
SAVE 31 1.6%
USE 0 0.0%
OTHER 44 2.3%
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 270 38.6% 71 26.3% 17 73.1 161.5
TITLE WORD 126 18.0% 68 54.0% 9 258.4 1341.4
EXACT TITLE 2 0.3% 2 100% 0 0.0 0.0
KEYWORD 188 26.9% 32 17.0% 30 7962.6 45533.9
JOURNAL 32 4.6% 15 46.9% 385 2220.5 4427.3
EXACT JOURNAL 1 0.1% 1 100% 0 0.0 0.0
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 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 0 0.0% 0 0.0% 0 0.0 0.0
PUBLICATION TYPE 0 0.0% 0 0.0% 0 0.0 0.0
DATE 7 1.0% 2 28.6% 4 4.0 3.1
LANGUAGE 0 0.0% 0 0.0% 0 0.0 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. 2 0.3% 0 0.0% 35 34.5 31.8
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 28 4.0% 5 17.9% 3 179.6 690.1
EXACT PE 4 0.6% 0 0.0% 3 2.8 1.5
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 39 5.6% 7 17.9% 12 89.2 275.7
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 103 17.5% 40 38.8% 7 52.8 200.8
Single 485 82.5% 119 24.5% 24 3578.9 29935.5
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 1.6%
SHORT 87.8%
LONG 0.6%
TAGS 0.0%
FIELDS 2.2%
BROWSE REVIEW 0.0%
BROWSE SHORT 0.0%
BROWSE LONG 0.0%
PERIODICALS 4.4%
COMMENTS 0.0%
Other 3.4%
2.2 Error, EXPLAIN and HELP statistics
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Percent of commands that contained errors 9.3%
Ten most frequent errors:
1. NS command - no next screen 37.6%
2. First word of command is invalid 32.0%
3. FIND command with invalid index name 8.2%
4. BROWSE command with invalid index name 4.1%
5. DISPLAY command contains invalid word 3.6%
6. Search term missing from search command 2.6%
7. Valid command at an inappropriate time 1.5%
8. DISPLAY command - no FIND results 1.5%
9. DISPLAY command-record numbers too large 1.5%
10. DATE search with unrecognized word 1.5%
11. All others 5.7%
Ten most frequent EXPLAIN requests:
1. FIND 25.0%
2. BIOSIS DATABASE 12.5%
3. B371 12.5%
4. MAIL 12.5%
5. 1185 12.5%
6. 5341 12.5%
7. LOCATE (PE DB) 12.5%
11. All others 0.0%
Ten most frequent HELP situations:
1. NS command - no next screen 20.0%
2. First word of command is invalid 10.0%
3. PS command - no previous screen 10.0%
4. SHOW NEWS command 10.0%
5. PE display complete in one screen 10.0%
6. Help requested from SET DB command 10.0%
7. 454 10.0%
8. User cancels MAIL command 10.0%
9. MAIL command entered w/o email address 10.0%
11. All others 0.0%
Ten most frequent SHOW requests:
1. HISTORY 80.0%
2. BIOSIS NEWS 20.0%
11. All others 0.0%
BIOmm/dd bio MELVYL BIOSIS DATABASES TELNET STATISTICS (weekly)