MELVYL BIOSIS DATABASES TELNET STATISTICS
Time period: 08/04/01 through 08/10/01
1.0 SUMMARY STATISTICS
_______________________
1.1 Total sessions:
____________________
Zero results may indicate no access to the database
Location Library Remote Total
________ _______ ______ _____
Berkeley 52 227 279
Davis 159 5 164
Irvine 18 0 18
Los Angeles 0 50 50
Riverside 7 37 44
San Diego 19 40 59
San Francisco 47 0 47
Santa Barbara 1 25 26
Santa Cruz 2 31 33
Lawrence Berkeley 0 0 0
Lawrence Livermore 0 3 3
Los Alamos 0 0 0
Other - UC 0 14 14
Other-Network UC n/a 418 418
_______ ______ _____
305 850 1,155
Relative use of BIOSIS databases:
Number of Number of Number of
Sessions FIND commands Records Displayed
_________ _____________ _________________
BIOSIS 1,016 3,157 28,137
BIO88 139 295 1,704
Per hour usage:
Time Sessions Finds Records Displayed
__________ __________ __________ _________________
12-2 a.m. 8 37 184
2-4 a.m. 4 19 116
4-6 a.m. 3 18 41
6-8 a.m. 37 105 664
8-10 a.m. 121 334 2,212
10-12 a.m. 247 678 6,814
12-2 p.m. 208 558 3,300
2-4 p.m. 248 774 7,939
4-6 p.m. 179 551 5,571
6-8 p.m. 53 228 1,596
8-10 p.m. 22 56 366
10-12 p.m. 25 94 1,038
__________ __________ __________ _________________
Total: 1,155 3,452 29,841
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 183 689 872
Davis 552 9 561
Irvine 26 0 26
Los Angeles 0 202 202
Riverside 18 86 104
San Diego 56 103 159
San Francisco 270 0 270
Santa Barbara 2 127 129
Santa Cruz 5 157 162
Lawrence Berkeley 0 0 0
Lawrence Livermore 0 15 15
Los Alamos 0 0 0
Other - UC 0 48 48
Other-Network UC n/a 904 904
_______ ______ _____
1,112 2,340 3,452
1.3 Records displayed
______________________
Zero results may indicate no access to the database
Number of Records Displayed by location:
Location Library Remote Total
________ _______ ______ _____
Berkeley 2,620 6,981 9,601
Davis 4,896 172 5,068
Irvine 156 0 156
Los Angeles 0 1,764 1,764
Riverside 91 892 983
San Diego 371 802 1,173
San Francisco 1,377 0 1,377
Santa Barbara 0 746 746
Santa Cruz 64 1,234 1,298
Lawrence Berkeley 0 0 0
Lawrence Livermore 0 66 66
Los Alamos 0 0 0
Other - UC 0 254 254
Other-Network UC n/a 7,355 7,355
_______ ______ _____
9,575 20,266 29,841
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
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Median session length (minutes:seconds) 10:48
Average session length (minutes:seconds) 15:11
Longest session recorded (minutes:seconds) 1030
Average number of searches completed per session 3.0
Retrievals per search - median 7.0
Retrievals per search - average 858.9
Retrievals per search - standard deviation 8133.9
Percent of searches completed with 0 results 24.4%
Percent of searches entered that are long 2.5%
Percent of long searches completed
(includes partial results) 70.6%
Commands entered, by type, excluding errors:
Total Percentage
__________ __________
FIND 2,973 30.8%
DISPLAY (excluding automatic displays) 3,590 37.2%
BROWSE 0 0.0%
HELP 63 0.7%
EXPLAIN 84 0.9%
SET/RESET 611 6.3%
SHOW 36 0.4%
ADD ON (AND, OR, AND NOT) 479 5.0%
LOGON or LOGOFF 1,190 12.3%
COMMENT 0 0.0%
SAVE 350 3.6%
USE 0 0.0%
OTHER 262 2.7%
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 1,101 32.8% 238 21.6% 19 226.4 1260.2
TITLE WORD 627 18.7% 262 41.8% 8 349.9 1705.4
EXACT TITLE 32 1.0% 16 50.0% 5 23.0 70.1
KEYWORD 1,097 32.7% 192 17.5% 33 2400.4 14932.9
JOURNAL 121 3.6% 44 36.4% 108 4415.4 14917.7
EXACT JOURNAL 58 1.7% 27 46.6% 20 1219.9 3228.2
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 9 0.3% 2 22.2% 24 40.3 61.2
LANGUAGE 0 0.0% 0 0.0% 0 0.0 0.0
ADDED 2 0.1% 1 50.0% 18 18.0 0.0
ARTICLE 0 0.0% 0 0.0% 0 0.0 0.0
AUTHOR AFFIL. 9 0.3% 0 0.0% 82 3151.0 9273.8
ACCESSION NO. 0 0.0% 0 0.0% 0 0.0 0.0
ISSN 1 0.0% 1 100% 0 0.0 0.0
ISBN 0 0.0% 0 0.0% 0 0.0 0.0
PERIODICAL 178 5.3% 34 19.1% 6 49.9 232.0
EXACT PE 22 0.7% 1 4.5% 5 13.2 28.8
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 100 3.0% 28 28.0% 7 129.0 336.3
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 373 12.7% 139 37.3% 4 49.7 195.2
Single 2,571 87.3% 550 21.4% 28 1432.8 10547.3
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 2.8%
SHORT 84.3%
LONG 2.2%
TAGS 0.2%
FIELDS 1.5%
BROWSE REVIEW 0.0%
BROWSE SHORT 0.0%
BROWSE LONG 0.0%
PERIODICALS 6.8%
COMMENTS 0.0%
Other 2.1%
2.2 Error, EXPLAIN and HELP statistics
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Percent of commands that contained errors 7.9%
Ten most frequent errors:
1. NS command - no next screen 36.2%
2. First word of command is invalid 27.0%
3. FIND command with invalid index name 8.4%
4. DISPLAY command contains invalid word 5.2%
5. DATE search with unrecognized word 2.7%
6. PS command - no previous screen 2.4%
7. Valid command at an inappropriate time 1.7%
8. Search term missing from search command 1.6%
9. DISPLAY command - no FIND results 1.5%
10. DISPLAY command-record numbers too large 1.5%
11. All others 12.0%
Ten most frequent EXPLAIN requests:
1. GUIDE 20.2%
2. LOCATE (BIO DB) 16.7%
3. BIOSIS DATABASE 11.9%
4. FIND 6.0%
5. DISPLAY 4.8%
6. Unrecognized term 4.8%
7. ADDON SEARCH 4.8%
8. INDEXES 3.6%
9. COMMANDS 2.4%
10. B925 2.4%
11. All others 22.6%
Ten most frequent HELP situations:
1. Help requested from SET DB command 23.1%
2. First word of command is invalid 10.2%
3. FIND command with invalid index name 8.8%
4. DISPLAY command-first of >1 screen 6.8%
5. DISPLAY command - last of >1 screen 6.8%
6. FIND command retrieves >1 book 6.1%
7. DISPLAY command-complete in one screen 4.8%
8. NS command - no next screen 4.1%
9. FIND command with zero results 4.1%
10. 361 3.4%
11. All others 21.8%
Ten most frequent SHOW requests:
1. HISTORY 60.6%
2. SEARCH 33.3%
3. SETTINGS 3.0%
4. GLOSSARY 3.0%
11. All others 0.0%
BIOmm/dd bio MELVYL BIOSIS DATABASES TELNET STATISTICS (weekly)