MELVYL BIOSIS DATABASES TELNET STATISTICS
Time period: 06/01/02 through 06/07/02
1.0 SUMMARY STATISTICS
_______________________
1.1 Total sessions:
____________________
Zero results may indicate no access to the database
Location Library Remote Total
________ _______ ______ _____
Berkeley 12 166 178
Davis 110 4 114
Irvine 27 0 27
Los Angeles 0 54 54
Riverside 0 39 39
San Diego 11 57 68
San Francisco 19 0 19
Santa Barbara 0 15 15
Santa Cruz 1 49 50
Lawrence Berkeley 0 7 7
Lawrence Livermore 0 0 0
Los Alamos 0 0 0
Other - UC 2 24 26
Other-Network UC n/a 176 176
_______ ______ _____
182 591 773
Relative use of BIOSIS databases:
Number of Number of Number of
Sessions FIND commands Records Displayed
_________ _____________ _________________
BIOSIS 693 2,490 23,720
BIO88 80 196 1,317
Per hour usage:
Time Sessions Finds Records Displayed
__________ __________ __________ _________________
12-2 a.m. 7 48 295
2-4 a.m. 11 14 37
4-6 a.m. 3 8 86
6-8 a.m. 23 72 581
8-10 a.m. 85 235 1,247
10-12 a.m. 122 402 3,423
12-2 p.m. 131 496 5,745
2-4 p.m. 191 593 5,502
4-6 p.m. 115 500 4,895
6-8 p.m. 36 121 1,199
8-10 p.m. 21 69 741
10-12 p.m. 28 128 1,286
__________ __________ __________ _________________
Total: 773 2,686 25,037
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 30 606 636
Davis 470 5 475
Irvine 173 0 173
Los Angeles 0 212 212
Riverside 0 144 144
San Diego 18 179 197
San Francisco 134 0 134
Santa Barbara 0 66 66
Santa Cruz 1 171 172
Lawrence Berkeley 0 12 12
Lawrence Livermore 0 0 0
Los Alamos 0 0 0
Other - UC 2 89 91
Other-Network UC n/a 374 374
_______ ______ _____
828 1,858 2,686
1.3 Records displayed
______________________
Zero results may indicate no access to the database
Number of Records Displayed by location:
Location Library Remote Total
________ _______ ______ _____
Berkeley 432 7,343 7,775
Davis 3,413 3 3,416
Irvine 1,370 0 1,370
Los Angeles 0 1,816 1,816
Riverside 0 1,099 1,099
San Diego 55 1,700 1,755
San Francisco 475 0 475
Santa Barbara 0 649 649
Santa Cruz 0 2,805 2,805
Lawrence Berkeley 0 31 31
Lawrence Livermore 0 0 0
Los Alamos 0 0 0
Other - UC 0 762 762
Other-Network UC n/a 3,084 3,084
_______ ______ _____
5,745 19,292 25,037
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 4.1
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) 11:24
Average session length (minutes:seconds) 16:01
Longest session recorded (minutes:seconds) 328:09
Average number of searches completed per session 3.5
Retrievals per search - median 10.0
Retrievals per search - average 1386.1
Retrievals per search - standard deviation 13983
Percent of searches completed with 0 results 21.3%
Percent of searches entered that are long 2.1%
Percent of long searches completed
(includes partial results) 75.4%
Commands entered, by type, excluding errors:
Total Percentage
__________ __________
FIND 2,276 30.7%
DISPLAY (excluding automatic displays) 2,801 37.8%
BROWSE 0 0.0%
HELP 65 0.9%
EXPLAIN 58 0.8%
SET/RESET 317 4.3%
SHOW 16 0.2%
ADD ON (AND, OR, AND NOT) 410 5.5%
LOGON or LOGOFF 1,023 13.8%
COMMENT 0 0.0%
SAVE 212 2.9%
USE 1 0.0%
OTHER 226 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 939 36.8% 170 18.1% 22 140.0 482.4
TITLE WORD 308 12.1% 112 36.4% 12 688.2 3906.8
EXACT TITLE 7 0.3% 2 28.6% 1 66.0 130.8
KEYWORD 1,018 39.9% 205 20.1% 31 3739.7 24588.9
JOURNAL 61 2.4% 23 37.7% 115 7035.3 20883.5
EXACT JOURNAL 38 1.5% 21 55.3% 20 409.3 816.8
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 2 0.1% 0 0.0% 14 13.5 6.4
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 12 0.5% 2 16.7% 7 21.7 49.5
LANGUAGE 5 0.2% 1 20.0% 8 7.0 5.0
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. 21 0.8% 7 33.3% 14 556.7 1227.3
ACCESSION NO. 2 0.1% 2 100% 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 65 2.5% 4 6.2% 4 650.7 4981.4
EXACT PE 20 0.8% 2 10.0% 2 5.2 7.0
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 52 2.0% 9 17.3% 8 194.7 744.6
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 280 12.4% 76 27.1% 6 180.5 1263.3
Single 1,978 87.6% 406 20.5% 31 2251.9 18132.8
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 2.6%
SHORT 88.5%
LONG 2.0%
TAGS 0.5%
FIELDS 1.2%
BROWSE REVIEW 0.0%
BROWSE SHORT 0.0%
BROWSE LONG 0.0%
PERIODICALS 3.9%
COMMENTS 0.0%
Other 1.5%
2.2 Error, EXPLAIN and HELP statistics
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Percent of commands that contained errors 9.6%
Ten most frequent errors:
1. NS command - no next screen 35.8%
2. First word of command is invalid 24.4%
3. FIND command with invalid index name 8.0%
4. DISPLAY command - no FIND results 4.7%
5. DISPLAY command contains invalid word 4.5%
6. PS command - no previous screen 3.9%
7. DATE search with unrecognized word 2.9%
8. Valid command at an inappropriate time 1.9%
9. Search term missing from search command 1.7%
10. NS of SHOW/EXP command-no next screen 1.5%
11. All others 10.7%
Ten most frequent EXPLAIN requests:
1. GUIDE 20.7%
2. LOCATE (BIO DB) 15.5%
3. FIND 8.6%
4. COMMANDS 6.9%
5. BIOSIS DATABASE 6.9%
6. Unrecognized term 5.2%
7. AUTHOR 3.4%
8. SUPERTAXA 3.4%
9. DISPLAY 3.4%
10. 1752 3.4%
11. All others 22.4%
Ten most frequent HELP situations:
1. Help requested from SET DB command 28.5%
2. First word of command is invalid 16.3%
3. FIND command with invalid index name 12.2%
4. DISPLAY command-first of >1 screen 4.1%
5. DISPLAY command - middle of >1 screen 4.1%
6. F/BR command with invalid search term 3.3%
7. DISPLAY command-complete in one screen 3.3%
8. 3 HELP commands issued from same code 2.4%
9. FIND command retrieves >1 book 2.4%
10. Multi-index search with zero results 2.4%
11. All others 21.1%
Ten most frequent SHOW requests:
1. HISTORY 45.5%
2. SYSTEM NEWS 27.3%
3. DISEASE INDEX 9.1%
4. GLOSSARY 9.1%
5. SEARCH 9.1%
11. All others 0.0%
BIOmm/dd bio MELVYL BIOSIS DATABASES TELNET STATISTICS (weekly)