MELVYL BIOSIS DATABASES TELNET STATISTICS
Time period: 05/19/01 through 05/25/01
1.0 SUMMARY STATISTICS
_______________________
1.1 Total sessions:
____________________
Zero results may indicate no access to the database
Location Library Remote Total
________ _______ ______ _____
Berkeley 38 202 240
Davis 231 3 234
Irvine 28 0 28
Los Angeles 1 54 55
Riverside 26 34 60
San Diego 10 88 98
San Francisco 44 0 44
Santa Barbara 3 35 38
Santa Cruz 8 46 54
Lawrence Berkeley 0 1 1
Lawrence Livermore 0 10 10
Los Alamos 0 0 0
Other - UC 0 8 8
Other-Network UC n/a 327 327
_______ ______ _____
389 808 1,197
Relative use of BIOSIS databases:
Number of Number of Number of
Sessions FIND commands Records Displayed
_________ _____________ _________________
BIOSIS 1,058 3,173 51,087
BIO88 139 339 19,572
Per hour usage:
Time Sessions Finds Records Displayed
__________ __________ __________ _________________
12-2 a.m. 18 32 302
2-4 a.m. 8 15 227
4-6 a.m. 11 43 173
6-8 a.m. 45 151 1,192
8-10 a.m. 139 444 3,491
10-12 a.m. 226 631 45,934
12-2 p.m. 176 540 4,431
2-4 p.m. 249 688 6,866
4-6 p.m. 170 479 4,250
6-8 p.m. 82 205 1,777
8-10 p.m. 30 114 861
10-12 p.m. 43 170 1,155
__________ __________ __________ _________________
Total: 1,197 3,512 70,659
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 108 648 756
Davis 835 6 841
Irvine 116 0 116
Los Angeles 0 125 125
Riverside 65 80 145
San Diego 48 232 280
San Francisco 166 0 166
Santa Barbara 6 140 146
Santa Cruz 32 164 196
Lawrence Berkeley 0 9 9
Lawrence Livermore 0 36 36
Los Alamos 0 0 0
Other - UC 0 20 20
Other-Network UC n/a 676 676
_______ ______ _____
1,376 2,136 3,512
1.3 Records displayed
______________________
Zero results may indicate no access to the database
Number of Records Displayed by location:
Location Library Remote Total
________ _______ ______ _____
Berkeley 980 6,525 7,505
Davis 46,395 98 46,493
Irvine 1,531 0 1,531
Los Angeles 0 952 952
Riverside 514 1,086 1,600
San Diego 215 1,995 2,210
San Francisco 890 0 890
Santa Barbara 61 1,375 1,436
Santa Cruz 31 1,091 1,122
Lawrence Berkeley 0 396 396
Lawrence Livermore 0 1,408 1,408
Los Alamos 0 0 0
Other - UC 0 28 28
Other-Network UC n/a 5,088 5,088
_______ ______ _____
50,617 20,042 70,659
1.4 Response time
__________________
Search response time from receipt of command at
DLA until transmission of response:
Average in seconds 0.9
Standard deviation in seconds 3.4
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) 8:14
Average session length (minutes:seconds) 14:33
Longest session recorded (minutes:seconds) 452:11
Average number of searches completed per session 2.9
Retrievals per search - median 9.0
Retrievals per search - average 1206.8
Retrievals per search - standard deviation 10876
Percent of searches completed with 0 results 22.6%
Percent of searches entered that are long 1.7%
Percent of long searches completed
(includes partial results) 65.6%
Commands entered, by type, excluding errors:
Total Percentage
__________ __________
FIND 2,985 29.9%
DISPLAY (excluding automatic displays) 3,740 37.4%
BROWSE 0 0.0%
HELP 77 0.8%
EXPLAIN 63 0.6%
SET/RESET 640 6.4%
SHOW 43 0.4%
ADD ON (AND, OR, AND NOT) 527 5.3%
LOGON or LOGOFF 1,250 12.5%
COMMENT 0 0.0%
SAVE 336 3.4%
USE 4 0.0%
OTHER 327 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 1,168 35.1% 226 19.3% 22 201.9 1294.6
TITLE WORD 618 18.5% 228 36.9% 13 1446.2 6323.7
EXACT TITLE 23 0.7% 9 39.1% 1 6.7 11.6
KEYWORD 1,063 31.9% 180 16.9% 33 1904.1 10428.5
JOURNAL 119 3.6% 46 38.7% 174 4842.8 22823.0
EXACT JOURNAL 46 1.4% 18 39.1% 1,820 6203.1 7703.1
SOURCE 3 0.1% 2 66.7% 10,025 10025.0 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 3 0.1% 0 0.0% 2 7.3 10.1
DATE 20 0.6% 2 10.0% 101 1066.3 1398.1
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. 26 0.8% 3 11.5% 75 45074.3 96473.2
ACCESSION NO. 1 0.0% 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 111 3.3% 25 22.5% 5 43.5 142.1
EXACT PE 23 0.7% 3 13.0% 3 122.9 525.0
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 108 3.2% 22 20.4% 14 1084.4 2926.4
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 345 11.7% 98 28.4% 6 330.4 1308.1
Single 2,608 88.3% 555 21.3% 31 1930.5 14012.9
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 3.8%
SHORT 83.6%
LONG 1.8%
TAGS 0.3%
FIELDS 4.7%
BROWSE REVIEW 0.0%
BROWSE SHORT 0.0%
BROWSE LONG 0.0%
PERIODICALS 4.4%
COMMENTS 0.0%
Other 1.4%
2.2 Error, EXPLAIN and HELP statistics
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Percent of commands that contained errors 8.3%
Ten most frequent errors:
1. NS command - no next screen 37.0%
2. First word of command is invalid 24.6%
3. FIND command with invalid index name 7.3%
4. DATE search with unrecognized word 3.6%
5. DISPLAY command contains invalid word 3.1%
6. PS command - no previous screen 2.2%
7. Max. # of ports to a Z39 db are in use 2.1%
8. Valid command at an inappropriate time 1.9%
9. Search term missing from search command 1.7%
10. Index invalid in current database 1.7%
11. All others 14.9%
Ten most frequent EXPLAIN requests:
1. GUIDE 17.5%
2. COMMANDS 12.7%
3. BIOSIS DATABASE 9.5%
4. LOCATE (BIO DB) 9.5%
5. Unrecognized term 7.9%
6. MAIL 6.3%
7. DISPLAY 4.8%
8. INDEXES 3.2%
9. FIND 3.2%
10. DATE 3.2%
11. All others 22.2%
Ten most frequent HELP situations:
1. Help requested from SET DB command 25.0%
2. First word of command is invalid 10.0%
3. FIND command with invalid index name 10.0%
4. FIND command with zero results 7.1%
5. FIND command retrieves >1 book 6.4%
6. DISPLAY command-first of >1 screen 6.4%
7. DISPLAY command - last of >1 screen 6.4%
8. 117 3.6%
9. 3 HELP commands issued from same code 3.6%
10. DISPLAY command - no FIND results 2.1%
11. All others 19.3%
Ten most frequent SHOW requests:
1. HISTORY 80.0%
2. BIOSIS NEWS 7.5%
3. MAIL STATUS 5.0%
4. BIOSIS STATISTICS 2.5%
5. V300 2.5%
6. SEARCH 2.5%
11. All others 0.0%
BIOmm/dd bio MELVYL BIOSIS DATABASES TELNET STATISTICS (weekly)