MELVYL BIOSIS DATABASES TELNET STATISTICS
Time period: 02/02/02 through 02/08/02
1.0 SUMMARY STATISTICS
_______________________
1.1 Total sessions:
____________________
Zero results may indicate no access to the database
Location Library Remote Total
________ _______ ______ _____
Berkeley 61 247 308
Davis 144 3 147
Irvine 31 0 31
Los Angeles 4 75 79
Riverside 3 17 20
San Diego 16 71 87
San Francisco 24 0 24
Santa Barbara 1 13 14
Santa Cruz 0 25 25
Lawrence Berkeley 0 2 2
Lawrence Livermore 0 4 4
Los Alamos 0 0 0
Other - UC 1 23 24
Other-Network UC n/a 413 413
_______ ______ _____
285 893 1,178
Relative use of BIOSIS databases:
Number of Number of Number of
Sessions FIND commands Records Displayed
_________ _____________ _________________
BIOSIS 1,042 3,404 28,804
BIO88 136 267 2,105
Per hour usage:
Time Sessions Finds Records Displayed
__________ __________ __________ _________________
12-2 a.m. 11 101 2,527
2-4 a.m. 17 56 294
4-6 a.m. 11 31 107
6-8 a.m. 33 77 374
8-10 a.m. 168 432 2,774
10-12 a.m. 278 801 4,943
12-2 p.m. 174 533 4,650
2-4 p.m. 202 631 4,427
4-6 p.m. 169 659 6,603
6-8 p.m. 77 200 2,343
8-10 p.m. 21 84 666
10-12 p.m. 17 66 1,201
__________ __________ __________ _________________
Total: 1,178 3,671 30,909
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 171 850 1,021
Davis 544 5 549
Irvine 205 0 205
Los Angeles 15 316 331
Riverside 2 57 59
San Diego 46 252 298
San Francisco 76 0 76
Santa Barbara 1 68 69
Santa Cruz 0 72 72
Lawrence Berkeley 0 2 2
Lawrence Livermore 0 19 19
Los Alamos 0 0 0
Other - UC 3 43 46
Other-Network UC n/a 924 924
_______ ______ _____
1,063 2,608 3,671
1.3 Records displayed
______________________
Zero results may indicate no access to the database
Number of Records Displayed by location:
Location Library Remote Total
________ _______ ______ _____
Berkeley 1,727 8,115 9,842
Davis 5,149 9 5,158
Irvine 1,031 0 1,031
Los Angeles 85 2,961 3,046
Riverside 1 921 922
San Diego 99 3,450 3,549
San Francisco 622 0 622
Santa Barbara 0 769 769
Santa Cruz 0 827 827
Lawrence Berkeley 0 15 15
Lawrence Livermore 0 84 84
Los Alamos 0 0 0
Other - UC 4 297 301
Other-Network UC n/a 4,743 4,743
_______ ______ _____
8,718 22,191 30,909
1.4 Response time
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Search response time from receipt of command at
DLA until transmission of response:
Average in seconds 1.3
Standard deviation in seconds 12.3
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) 9:48
Average session length (minutes:seconds) 14:18
Longest session recorded (minutes:seconds) 312:27
Average number of searches completed per session 3.1
Retrievals per search - median 9.0
Retrievals per search - average 1347.7
Retrievals per search - standard deviation 17838
Percent of searches completed with 0 results 23.8%
Percent of searches entered that are long 2.4%
Percent of long searches completed
(includes partial results) 71.3%
Commands entered, by type, excluding errors:
Total Percentage
__________ __________
FIND 3,092 30.5%
DISPLAY (excluding automatic displays) 3,682 36.4%
BROWSE 0 0.0%
HELP 131 1.3%
EXPLAIN 166 1.6%
SET/RESET 562 5.6%
SHOW 24 0.2%
ADD ON (AND, OR, AND NOT) 579 5.7%
LOGON or LOGOFF 1,336 13.2%
COMMENT 0 0.0%
SAVE 242 2.4%
USE 4 0.0%
OTHER 305 3.0%
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 1,085 32.3% 224 20.6% 25 142.1 416.8
TITLE WORD 543 16.1% 226 41.6% 7 556.2 4632.2
EXACT TITLE 22 0.7% 15 68.2% 3 6.1 7.5
KEYWORD 1,319 39.2% 259 19.6% 31 2021.3 17330.5
JOURNAL 101 3.0% 32 31.7% 286 14020.5 42151.6
EXACT JOURNAL 52 1.5% 27 51.9% 350 1367.2 1990.7
SOURCE 1 0.0% 1 100% 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 1 0.0% 1 100% 0 0.0 0.0
MAJ CONCEPT CDES 0 0.0% 0 0.0% 0 0.0 0.0
CONCEPT CODES 1 0.0% 1 100% 0 0.0 0.0
PUBLICATION TYPE 0 0.0% 0 0.0% 0 0.0 0.0
DATE 6 0.2% 0 0.0% 9 64.7 140.0
LANGUAGE 1 0.0% 0 0.0% 2,297 2297.0 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. 22 0.7% 5 22.7% 24 332.6 907.5
ACCESSION NO. 5 0.1% 0 0.0% 1 1.0 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 98 2.9% 15 15.3% 5 86.5 338.7
EXACT PE 35 1.0% 2 5.7% 4 35.8 98.6
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 71 2.1% 10 14.1% 11 20945.5 105160
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 297 9.7% 98 33.0% 6 59.5 236.0
Single 2,762 90.3% 621 22.5% 29 2201.5 23119.8
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 3.0%
SHORT 86.4%
LONG 1.3%
TAGS 0.4%
FIELDS 2.7%
BROWSE REVIEW 0.0%
BROWSE SHORT 0.0%
BROWSE LONG 0.0%
PERIODICALS 4.5%
COMMENTS 0.0%
Other 1.7%
2.2 Error, EXPLAIN and HELP statistics
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Percent of commands that contained errors 9.1%
Ten most frequent errors:
1. NS command - no next screen 32.7%
2. First word of command is invalid 25.7%
3. FIND command with invalid index name 11.9%
4. DISPLAY command - no FIND results 3.8%
5. PS command - no previous screen 3.7%
6. DISPLAY command contains invalid word 3.4%
7. DATE search with unrecognized word 2.6%
8. Search term missing from search command 1.8%
9. Valid command at an inappropriate time 1.7%
10. DISPLAY command-record numbers too large 1.1%
11. All others 11.6%
Ten most frequent EXPLAIN requests:
1. GUIDE 16.3%
2. LOCATE (BIO DB) 12.7%
3. FIND 10.8%
4. INDEXES 7.2%
5. COMMANDS 6.0%
6. DISPLAY 5.4%
7. BIOSIS DATABASE 4.2%
8. CONCEPT CODES 3.6%
9. Unrecognized term 3.0%
10. DATABASES 3.0%
11. All others 27.7%
Ten most frequent HELP situations:
1. Help requested from SET DB command 28.6%
2. First word of command is invalid 13.1%
3. FIND command with invalid index name 10.8%
4. DISPLAY command - middle of >1 screen 6.4%
5. DISPLAY command-first of >1 screen 5.4%
6. FIND command with zero results 4.4%
7. FIND command retrieves >1 book 4.4%
8. Valid command at an inappropriate time 2.0%
9. NS command - no next screen 2.0%
10. PS command - no previous screen 2.0%
11. All others 20.9%
Ten most frequent SHOW requests:
1. HISTORY 57.1%
2. SETTINGS 9.5%
3. SEARCH 9.5%
4. BIOSIS NEWS 4.8%
5. B902 4.8%
6. B912 4.8%
7. GLOSSARY 4.8%
8. 0603 4.8%
11. All others 0.0%
BIOmm/dd bio MELVYL BIOSIS DATABASES TELNET STATISTICS (weekly)