MELVYL BIOSIS DATABASES TELNET STATISTICS
Time period: 05/11/02 through 05/17/02
1.0 SUMMARY STATISTICS
_______________________
1.1 Total sessions:
____________________
Zero results may indicate no access to the database
Location Library Remote Total
________ _______ ______ _____
Berkeley 31 166 197
Davis 142 2 144
Irvine 28 0 28
Los Angeles 0 55 55
Riverside 3 7 10
San Diego 28 31 59
San Francisco 18 0 18
Santa Barbara 4 20 24
Santa Cruz 1 42 43
Lawrence Berkeley 0 4 4
Lawrence Livermore 0 3 3
Los Alamos 0 0 0
Other - UC 0 33 33
Other-Network UC n/a 113 113
_______ ______ _____
255 476 731
Relative use of BIOSIS databases:
Number of Number of Number of
Sessions FIND commands Records Displayed
_________ _____________ _________________
BIOSIS 672 2,169 34,451
BIO88 59 183 7,805
Per hour usage:
Time Sessions Finds Records Displayed
__________ __________ __________ _________________
12-2 a.m. 12 36 649
2-4 a.m. 13 25 146
4-6 a.m. 2 3 65
6-8 a.m. 23 58 585
8-10 a.m. 74 179 1,788
10-12 a.m. 145 441 4,490
12-2 p.m. 120 475 22,657
2-4 p.m. 119 372 3,667
4-6 p.m. 120 361 3,504
6-8 p.m. 54 190 2,776
8-10 p.m. 33 141 1,372
10-12 p.m. 16 71 557
__________ __________ __________ _________________
Total: 731 2,352 42,256
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 104 505 609
Davis 552 5 557
Irvine 135 0 135
Los Angeles 0 138 138
Riverside 3 19 22
San Diego 63 76 139
San Francisco 89 0 89
Santa Barbara 4 43 47
Santa Cruz 2 172 174
Lawrence Berkeley 0 20 20
Lawrence Livermore 0 3 3
Los Alamos 0 0 0
Other - UC 1 96 97
Other-Network UC n/a 322 322
_______ ______ _____
953 1,399 2,352
1.3 Records displayed
______________________
Zero results may indicate no access to the database
Number of Records Displayed by location:
Location Library Remote Total
________ _______ ______ _____
Berkeley 944 6,190 7,134
Davis 22,090 0 22,090
Irvine 838 0 838
Los Angeles 0 2,403 2,403
Riverside 4 121 125
San Diego 312 2,587 2,899
San Francisco 344 0 344
Santa Barbara 41 152 193
Santa Cruz 3 1,867 1,870
Lawrence Berkeley 0 157 157
Lawrence Livermore 0 78 78
Los Alamos 0 0 0
Other - UC 0 2,011 2,011
Other-Network UC n/a 2,114 2,114
_______ ______ _____
24,576 17,680 42,256
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 3.8
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
_________________________________________
Median session length (minutes:seconds) 8:34
Average session length (minutes:seconds) 13:37
Longest session recorded (minutes:seconds) 228:56
Average number of searches completed per session 3.2
Retrievals per search - median 12.0
Retrievals per search - average 1683.7
Retrievals per search - standard deviation 16483
Percent of searches completed with 0 results 22.5%
Percent of searches entered that are long 1.4%
Percent of long searches completed
(includes partial results) 64.7%
Commands entered, by type, excluding errors:
Total Percentage
__________ __________
FIND 1,902 28.1%
DISPLAY (excluding automatic displays) 2,386 35.3%
BROWSE 10 0.1%
HELP 127 1.9%
EXPLAIN 82 1.2%
SET/RESET 238 3.5%
SHOW 18 0.3%
ADD ON (AND, OR, AND NOT) 450 6.7%
LOGON or LOGOFF 1,080 16.0%
COMMENT 0 0.0%
SAVE 265 3.9%
USE 1 0.0%
OTHER 212 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 672 31.7% 184 27.4% 21 100.1 342.1
TITLE WORD 327 15.4% 101 30.9% 22 4142.1 24542.1
EXACT TITLE 19 0.9% 13 68.4% 1 2.5 2.3
KEYWORD 791 37.3% 134 16.9% 42 3046.5 24432.7
JOURNAL 62 2.9% 27 43.5% 354 1826.4 3381.1
EXACT JOURNAL 27 1.3% 8 29.6% 355 3714.2 7851.8
SOURCE 2 0.1% 2 100% 0 0.0 0.0
CONFERENCE 2 0.1% 0 0.0% 549 548.5 555.1
BIOSYS NAMES 1 0.0% 1 100% 0 0.0 0.0
BIOSYS CODES 3 0.1% 0 0.0% 47 38.0 15.6
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 3 0.1% 0 0.0% 47 44.3 4.6
PUBLICATION TYPE 0 0.0% 0 0.0% 0 0.0 0.0
DATE 16 0.8% 4 25.0% 3 3.3 3.6
LANGUAGE 3 0.1% 0 0.0% 29 28.0 7.5
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. 24 1.1% 3 12.5% 50 173.8 376.2
ACCESSION NO. 3 0.1% 1 33.3% 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 80 3.8% 12 15.0% 3 205.2 1604.5
EXACT PE 26 1.2% 4 15.4% 3 21.0 46.2
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 60 2.8% 16 26.7% 25 114.0 210.9
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 216 11.4% 71 32.9% 9 45.5 139.1
Single 1,673 88.6% 361 21.6% 37 2387.5 20139.5
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 10 100% 7 70.0% 1 8.0 12.1
DISPLAY commands, by type, excluding automatic displays:
REVIEW 2.2%
SHORT 87.1%
LONG 1.3%
TAGS 0.5%
FIELDS 2.8%
BROWSE REVIEW 0.1%
BROWSE SHORT 0.0%
BROWSE LONG 0.0%
PERIODICALS 4.6%
COMMENTS 0.0%
Other 1.4%
2.2 Error, EXPLAIN and HELP statistics
_______________________________________
Percent of commands that contained errors 10.9%
Ten most frequent errors:
1. NS command - no next screen 30.5%
2. First word of command is invalid 27.0%
3. FIND command with invalid index name 11.8%
4. PS command - no previous screen 3.6%
5. DISPLAY command - no FIND results 3.4%
6. DISPLAY command contains invalid word 3.4%
7. DATE search with unrecognized word 3.2%
8. Search term missing from search command 2.5%
9. Valid command at an inappropriate time 1.6%
10. Command contains escape or arrow key 1.2%
11. All others 11.8%
Ten most frequent EXPLAIN requests:
1. GUIDE 31.7%
2. LOCATE (BIO DB) 9.8%
3. BIOSIS DATABASE 7.3%
4. FIND 7.3%
5. INDEXES 6.1%
6. COMMANDS 4.9%
7. DISPLAY 4.9%
8. Unrecognized term 3.7%
9. ADDON SEARCH 3.7%
10. B336 2.4%
11. All others 18.3%
Ten most frequent HELP situations:
1. Help requested from SET DB command 25.4%
2. First word of command is invalid 16.3%
3. FIND command with invalid index name 13.9%
4. DISPLAY command - middle of >1 screen 6.7%
5. DISPLAY command-first of >1 screen 4.3%
6. NS command - no next screen 3.8%
7. SET command with invalid setting 2.9%
8. DISPLAY command-complete in one screen 2.9%
9. DISPLAY command - last of >1 screen 2.9%
10. F/BR command with invalid search term 2.4%
11. All others 18.7%
Ten most frequent SHOW requests:
1. SEARCH 66.7%
2. HISTORY 26.7%
3. GLOSSARY 6.7%
11. All others 0.0%
BIOmm/dd bio MELVYL BIOSIS DATABASES TELNET STATISTICS (weekly)