MELVYL BIOSIS DATABASES TELNET STATISTICS
Time period: 08/01/01 through 08/31/01
1.0 SUMMARY STATISTICS
_______________________
1.1 Total sessions:
____________________
Zero results may indicate no access to the database
Location Library Remote Total
________ _______ ______ _____
Berkeley 170 1,003 1,173
Davis 661 34 695
Irvine 84 0 84
Los Angeles 1 230 231
Riverside 33 116 149
San Diego 62 168 230
San Francisco 182 0 182
Santa Barbara 11 169 180
Santa Cruz 23 156 179
Lawrence Berkeley 0 14 14
Lawrence Livermore 0 37 37
Los Alamos 0 0 0
Other - UC 11 120 131
Other-Network UC n/a 2,031 2,031
_______ ______ _____
1,238 4,078 5,316
Relative use of BIOSIS databases:
Number of Number of Number of
Sessions FIND commands Records Displayed
_________ _____________ _________________
BIOSIS 4,631 13,858 122,014
BIO88 685 1,590 10,552
Per hour usage:
Time Sessions Finds Records Displayed
__________ __________ __________ _________________
12-2 a.m. 36 179 1,179
2-4 a.m. 21 102 716
4-6 a.m. 53 139 831
6-8 a.m. 173 601 4,410
8-10 a.m. 678 1,734 13,487
10-12 a.m. 1,168 3,104 25,363
12-2 p.m. 883 2,455 22,383
2-4 p.m. 1,032 3,116 28,728
4-6 p.m. 799 2,575 22,496
6-8 p.m. 267 823 7,330
8-10 p.m. 118 326 2,874
10-12 p.m. 88 294 2,769
__________ __________ __________ _________________
Total: 5,316 15,448 132,566
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 573 3,183 3,756
Davis 2,237 93 2,330
Irvine 185 0 185
Los Angeles 8 697 705
Riverside 104 280 384
San Diego 270 461 731
San Francisco 868 0 868
Santa Barbara 22 712 734
Santa Cruz 70 638 708
Lawrence Berkeley 0 26 26
Lawrence Livermore 0 170 170
Los Alamos 0 0 0
Other - UC 26 320 346
Other-Network UC n/a 4,505 4,505
_______ ______ _____
4,363 11,085 15,448
1.3 Records displayed
______________________
Zero results may indicate no access to the database
Number of Records Displayed by location:
Location Library Remote Total
________ _______ ______ _____
Berkeley 5,765 34,203 39,968
Davis 22,119 658 22,777
Irvine 1,403 0 1,403
Los Angeles 43 6,451 6,494
Riverside 694 3,280 3,974
San Diego 993 4,011 5,004
San Francisco 4,870 0 4,870
Santa Barbara 101 6,166 6,267
Santa Cruz 820 5,321 6,141
Lawrence Berkeley 0 441 441
Lawrence Livermore 0 1,948 1,948
Los Alamos 0 0 0
Other - UC 138 2,829 2,967
Other-Network UC n/a 30,312 30,312
_______ ______ _____
36,946 95,620 132,566
1.4 Response time
__________________
Search response time from receipt of command at
DLA until transmission of response:
Average in seconds 1.3
Standard deviation in seconds 11.5
Display response time from receipt of command at
DLA until transmission of a complete screen:
Average in seconds 0.1
Standard deviation in seconds 0.2
2.0 BIOSIS Databases Detailed Statistics
_________________________________________
Median session length (minutes:seconds) 10:34
Average session length (minutes:seconds) 14:54
Longest session recorded (minutes:seconds) 1030
Average number of searches completed per session 2.9
Retrievals per search - median 7.0
Retrievals per search - average 1045.0
Retrievals per search - standard deviation 20778
Percent of searches completed with 0 results 24.3%
Percent of searches entered that are long 2.3%
Percent of long searches completed
(includes partial results) 73.6%
Commands entered, by type, excluding errors:
Total Percentage
__________ __________
FIND 13,324 31.6%
DISPLAY (excluding automatic displays) 15,172 36.0%
BROWSE 4 0.0%
HELP 305 0.7%
EXPLAIN 376 0.9%
SET/RESET 2,903 6.9%
SHOW 166 0.4%
ADD ON (AND, OR, AND NOT) 2,124 5.0%
LOGON or LOGOFF 5,307 12.6%
COMMENT 0 0.0%
SAVE 1,175 2.8%
USE 19 0.0%
OTHER 1,305 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 5,066 33.6% 1,017 20.1% 22 189.1 1067.9
TITLE WORD 2,518 16.7% 1,023 40.6% 6 394.6 6438.1
EXACT TITLE 134 0.9% 70 52.2% 2 11.7 37.8
KEYWORD 5,082 33.8% 915 18.0% 31 2412.5 36334.4
JOURNAL 564 3.7% 234 41.5% 156 2913.1 13372.8
EXACT JOURNAL 284 1.9% 127 44.7% 66 1374.6 4224.4
SOURCE 7 0.0% 6 85.7% 18 18.0 0.0
CONFERENCE 3 0.0% 2 66.7% 1,728 1728.0 0.0
BIOSYS NAMES 0 0.0% 0 0.0% 0 0.0 0.0
BIOSYS CODES 4 0.0% 1 25.0% 50 99.0 115.6
SUPERTAXA 3 0.0% 0 0.0% 14 286.7 481.8
MAJ CONCEPT CDES 0 0.0% 0 0.0% 0 0.0 0.0
CONCEPT CODES 4 0.0% 1 25.0% 4 19.3 26.6
PUBLICATION TYPE 1 0.0% 0 0.0% 1 1.0 0.0
DATE 56 0.4% 8 14.3% 13 180.3 547.4
LANGUAGE 16 0.1% 0 0.0% 3,155 16409.5 30953.3
ADDED 11 0.1% 5 45.5% 28 2906.7 7055.7
ARTICLE 0 0.0% 0 0.0% 0 0.0 0.0
AUTHOR AFFIL. 57 0.4% 14 24.6% 59 1509.6 5658.2
ACCESSION NO. 1 0.0% 1 100% 0 0.0 0.0
ISSN 6 0.0% 4 66.7% 8,780 8779.5 11998.9
ISBN 0 0.0% 0 0.0% 0 0.0 0.0
PERIODICAL 581 3.9% 90 15.5% 5 158.7 1275.8
EXACT PE 124 0.8% 9 7.3% 3 24.7 127.1
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 535 3.6% 81 15.1% 24 6259.7 41996.1
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 1,726 13.1% 501 29.0% 7 364.9 3995.9
Single 11,486 86.9% 2,563 22.3% 27 1679.6 26844.6
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 4 100% 1 25.0% 1 4.0 5.2
DISPLAY commands, by type, excluding automatic displays:
REVIEW 3.4%
SHORT 84.7%
LONG 1.7%
TAGS 0.2%
FIELDS 2.2%
BROWSE REVIEW 0.0%
BROWSE SHORT 0.0%
BROWSE LONG 0.0%
PERIODICALS 6.0%
COMMENTS 0.0%
Other 1.8%
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 35.2%
2. First word of command is invalid 27.7%
3. FIND command with invalid index name 8.6%
4. DISPLAY command contains invalid word 4.0%
5. PS command - no previous screen 3.1%
6. Search term missing from search command 2.3%
7. DATE search with unrecognized word 2.2%
8. DISPLAY command-record numbers too large 1.5%
9. Max. # of ports to a Z39 db are in use 1.5%
10. DISPLAY command - no FIND results 1.0%
11. All others 12.9%
Ten most frequent EXPLAIN requests:
1. GUIDE 17.8%
2. LOCATE (BIO DB) 14.9%
3. BIOSIS DATABASE 8.8%
4. FIND 7.4%
5. COMMANDS 5.6%
6. INDEXES 5.3%
7. DATABASES 4.0%
8. Unrecognized term 3.5%
9. ADDON SEARCH 3.5%
10. DISPLAY 2.4%
11. All others 26.9%
Ten most frequent HELP situations:
1. Help requested from SET DB command 22.9%
2. First word of command is invalid 11.5%
3. FIND command with invalid index name 7.6%
4. DISPLAY command-first of >1 screen 7.0%
5. FIND command retrieves >1 book 5.6%
6. FIND command with zero results 4.1%
7. DISPLAY command-complete in one screen 3.4%
8. DISPLAY command - last of >1 screen 3.2%
9. DISPLAY command - middle of >1 screen 3.1%
10. NS command - no next screen 2.9%
11. All others 28.6%
Ten most frequent SHOW requests:
1. HISTORY 60.1%
2. MAIL STATUS 17.6%
3. SEARCH 10.8%
4. SETTINGS 4.1%
5. BIOSIS NEWS 2.0%
6. SYSTEM NEWS 1.4%
7. MAIL SETTINGS 1.4%
8. SUPERTAXA SETTING 0.7%
9. STOPWORDS 0.7%
10. GLOSSARY 0.7%
11. All others 0.7%
BIOmm/dd bio MELVYL BIOSIS DATABASES TELNET STATISTICS (weekly)