MELVYL BIOSIS DATABASES TELNET STATISTICS
Time period: 03/01/01 through 03/31/01
1.0 SUMMARY STATISTICS
_______________________
1.1 Total sessions:
____________________
Zero results may indicate no access to the database
Location Library Remote Total
________ _______ ______ _____
Berkeley 722 1,391 2,113
Davis 773 26 799
Irvine 196 0 196
Los Angeles 115 194 309
Riverside 69 148 217
San Diego 123 215 338
San Francisco 220 0 220
Santa Barbara 34 101 135
Santa Cruz 61 248 309
Lawrence Berkeley 0 35 35
Lawrence Livermore 0 31 31
Los Alamos 0 0 0
Other - UC 0 131 131
Other-Network UC n/a 2,082 2,082
_______ ______ _____
2,313 4,602 6,915
Relative use of BIOSIS databases:
Number of Number of Number of
Sessions FIND commands Records Displayed
_________ _____________ _________________
BIOSIS 6,119 18,588 181,956
BIO88 796 1,692 11,387
Per hour usage:
Time Sessions Finds Records Displayed
__________ __________ __________ _________________
12-2 a.m. 92 336 3,813
2-4 a.m. 49 133 892
4-6 a.m. 59 192 2,599
6-8 a.m. 155 508 6,107
8-10 a.m. 786 1,935 17,622
10-12 a.m. 1,329 3,472 37,534
12-2 p.m. 1,187 3,595 34,280
2-4 p.m. 1,341 3,996 32,698
4-6 p.m. 993 2,769 25,369
6-8 p.m. 444 1,692 14,113
8-10 p.m. 309 1,022 11,744
10-12 p.m. 171 630 6,572
__________ __________ __________ _________________
Total: 6,915 20,280 193,343
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 2,555 4,444 6,999
Davis 2,598 61 2,659
Irvine 609 0 609
Los Angeles 377 687 1,064
Riverside 416 391 807
San Diego 355 622 977
San Francisco 737 0 737
Santa Barbara 130 336 466
Santa Cruz 198 682 880
Lawrence Berkeley 0 94 94
Lawrence Livermore 0 73 73
Los Alamos 0 0 0
Other - UC 0 314 314
Other-Network UC n/a 4,601 4,601
_______ ______ _____
7,975 12,305 20,280
1.3 Records displayed
______________________
Zero results may indicate no access to the database
Number of Records Displayed by location:
Location Library Remote Total
________ _______ ______ _____
Berkeley 23,978 50,341 74,319
Davis 25,573 1,180 26,753
Irvine 9,570 0 9,570
Los Angeles 3,169 6,514 9,683
Riverside 2,123 3,768 5,891
San Diego 2,049 4,916 6,965
San Francisco 6,101 0 6,101
Santa Barbara 1,079 2,450 3,529
Santa Cruz 1,257 6,217 7,474
Lawrence Berkeley 0 598 598
Lawrence Livermore 0 817 817
Los Alamos 0 0 0
Other - UC 0 3,453 3,453
Other-Network UC n/a 38,190 38,190
_______ ______ _____
74,899 118,444 193,343
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 5.1
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
_________________________________________
Median session length (minutes:seconds) 8:29
Average session length (minutes:seconds) 13:37
Longest session recorded (minutes:seconds) 427:06
Average number of searches completed per session 2.9
Retrievals per search - median 9.0
Retrievals per search - average 947.9
Retrievals per search - standard deviation 11257
Percent of searches completed with 0 results 23.5%
Percent of searches entered that are long 1.7%
Percent of long searches completed
(includes partial results) 57.7%
Commands entered, by type, excluding errors:
Total Percentage
__________ __________
FIND 18,073 30.1%
DISPLAY (excluding automatic displays) 22,449 37.4%
BROWSE 4 0.0%
HELP 1,105 1.8%
EXPLAIN 1,003 1.7%
SET/RESET 3,367 5.6%
SHOW 170 0.3%
ADD ON (AND, OR, AND NOT) 2,207 3.7%
LOGON or LOGOFF 7,661 12.8%
COMMENT 1 0.0%
SAVE 1,893 3.2%
USE 17 0.0%
OTHER 2,031 3.4%
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 6,567 32.8% 1,328 20.2% 22 129.8 435.6
TITLE WORD 3,310 16.5% 1,290 39.0% 8 631.3 7295.2
EXACT TITLE 151 0.8% 93 61.6% 4 23.8 62.7
KEYWORD 7,260 36.2% 1,343 18.5% 28 2064.7 18511.5
JOURNAL 756 3.8% 328 43.4% 429 7915.9 27116.5
EXACT JOURNAL 287 1.4% 124 43.2% 811 3059.0 8557.8
SOURCE 8 0.0% 6 75.0% 24 24.0 1.4
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% 0 0.0% 2 2.0 0.0
MAJ CONCEPT CDES 0 0.0% 0 0.0% 0 0.0 0.0
CONCEPT CODES 1 0.0% 0 0.0% 13 13.0 0.0
PUBLICATION TYPE 2 0.0% 1 50.0% 1 1.0 0.0
DATE 65 0.3% 15 23.1% 11 92.3 150.2
LANGUAGE 7 0.0% 1 14.3% 50 65.5 65.1
ADDED 7 0.0% 3 42.9% 20 20.0 2.3
ARTICLE 0 0.0% 0 0.0% 0 0.0 0.0
AUTHOR AFFIL. 57 0.3% 10 17.5% 14 529.2 2986.4
ACCESSION NO. 1 0.0% 1 100% 0 0.0 0.0
ISSN 4 0.0% 0 0.0% 350 491.8 533.5
ISBN 5 0.0% 3 60.0% 270 270.0 292.7
PERIODICAL 760 3.8% 134 17.6% 5 249.6 1751.1
EXACT PE 138 0.7% 9 6.5% 3 19.6 110.1
RPE 1 0.0% 0 0.0% 8 8.0 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 653 3.3% 129 19.8% 12 787.3 4528.3
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 1,998 11.2% 664 33.2% 6 176.5 1618.2
Single 15,891 88.8% 3,455 21.7% 28 1462.2 14167.1
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% 2 5.0 6.1
DISPLAY commands, by type, excluding automatic displays:
REVIEW 2.9%
SHORT 85.7%
LONG 1.3%
TAGS 0.3%
FIELDS 2.3%
BROWSE REVIEW 0.0%
BROWSE SHORT 0.0%
BROWSE LONG 0.0%
PERIODICALS 5.5%
COMMENTS 0.0%
Other 2.0%
2.2 Error, EXPLAIN and HELP statistics
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Percent of commands that contained errors 10.1%
Ten most frequent errors:
1. NS command - no next screen 31.1%
2. First word of command is invalid 29.3%
3. FIND command with invalid index name 11.9%
4. PS command - no previous screen 4.5%
5. DISPLAY command contains invalid word 3.4%
6. Search term missing from search command 2.5%
7. Valid command at an inappropriate time 1.8%
8. DATE search with unrecognized word 1.6%
9. Max. # of ports to a Z39 db are in use 1.5%
10. Index invalid in current database 1.2%
11. All others 11.3%
Ten most frequent EXPLAIN requests:
1. LOCATE (BIO DB) 22.7%
2. GUIDE 17.5%
3. COMMANDS 8.7%
4. FIND 8.4%
5. INDEXES 6.4%
6. Unrecognized term 6.0%
7. ADDON SEARCH 5.1%
8. BIOSIS DATABASE 3.4%
9. DISPLAY 3.2%
10. FIND LOCATION 2.2%
11. All others 16.5%
Ten most frequent HELP situations:
1. Help requested from SET DB command 22.8%
2. First word of command is invalid 12.5%
3. DISPLAY command-first of >1 screen 12.2%
4. FIND command with invalid index name 10.1%
5. FIND command retrieves >1 book 5.3%
6. FIND command with zero results 5.0%
7. DISPLAY command - middle of >1 screen 4.6%
8. DISPLAY command - last of >1 screen 4.0%
9. DISPLAY command-complete in one screen 3.6%
10. NS command - no next screen 3.5%
11. All others 16.3%
Ten most frequent SHOW requests:
1. HISTORY 57.8%
2. SEARCH 18.0%
3. SETTINGS 4.3%
4. GLOSSARY 4.3%
5. MAIL STATUS 3.1%
6. BIOSIS NEWS 2.5%
7. MAIL SETTINGS 2.5%
8. UPDATE 1.9%
9. DISPLAY 1.2%
10. FIND DISPLAY 1.2%
11. All others 3.1%
BIOmm/dd bio MELVYL BIOSIS DATABASES TELNET STATISTICS (weekly)