MELVYL BIOSIS DATABASES TELNET STATISTICS
Time period: 01/01/99 through 01/31/99
1.0 SUMMARY STATISTICS
_______________________
1.1 Total sessions:
____________________
Zero results may indicate no access to the database
Location Library Remote Total
________ _______ ______ _____
Berkeley 947 2,969 3,916
Davis 2,737 227 2,964
Irvine 1,520 0 1,520
Los Angeles 403 739 1,142
Riverside 527 484 1,011
San Diego 78 1,229 1,307
San Francisco 570 24 594
Santa Barbara 433 353 786
Santa Cruz 774 508 1,282
Lawrence Berkeley 0 46 46
Lawrence Livermore 0 48 48
Los Alamos 0 2 2
Other - UC 17 311 328
Other-Network UC n/a 1,824 1,824
_______ ______ _____
8,006 8,764 16,770
Relative use of BIOSIS databases:
Number of Number of Number of
Sessions FIND commands Records Displayed
_________ _____________ _________________
BIOSIS 15,415 53,148 548,366
BIO88 1,355 3,242 26,716
Per hour usage:
Time Sessions Finds Records Displayed
__________ __________ __________ _________________
12-2 a.m. 163 569 9,798
2-4 a.m. 101 348 3,260
4-6 a.m. 127 447 3,862
6-8 a.m. 322 1,066 14,469
8-10 a.m. 1,529 4,421 38,414
10-12 a.m. 3,091 9,837 90,985
12-2 p.m. 3,170 10,343 105,899
2-4 p.m. 3,746 13,559 131,914
4-6 p.m. 2,424 8,369 96,535
6-8 p.m. 1,032 3,697 40,389
8-10 p.m. 688 2,364 23,793
10-12 p.m. 377 1,370 15,764
__________ __________ __________ _________________
Total: 16,770 56,390 575,082
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 3,583 10,239 13,822
Davis 8,978 754 9,732
Irvine 6,488 0 6,488
Los Angeles 1,410 2,360 3,770
Riverside 1,885 1,631 3,516
San Diego 253 2,441 2,694
San Francisco 1,983 79 2,062
Santa Barbara 2,021 1,470 3,491
Santa Cruz 2,998 1,544 4,542
Lawrence Berkeley 0 128 128
Lawrence Livermore 0 100 100
Los Alamos 0 5 5
Other - UC 60 576 636
Other-Network UC n/a 5,404 5,404
_______ ______ _____
29,659 26,731 56,390
1.3 Records displayed
______________________
Zero results may indicate no access to the database
Number of Records Displayed by location:
Location Library Remote Total
________ _______ ______ _____
Berkeley 38,087 122,337 160,424
Davis 87,268 5,765 93,033
Irvine 47,771 0 47,771
Los Angeles 17,609 31,748 49,357
Riverside 11,757 15,693 27,450
San Diego 1,138 21,934 23,072
San Francisco 14,844 21,262 36,106
Santa Barbara 15,778 17,080 32,858
Santa Cruz 20,886 18,754 39,640
Lawrence Berkeley 0 876 876
Lawrence Livermore 0 815 815
Los Alamos 0 58 58
Other - UC 301 4,313 4,614
Other-Network UC n/a 59,008 59,008
_______ ______ _____
255,439 319,643 575,082
1.4 Response time
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Search response time from receipt of command at
DLA until transmission of response:
Average in seconds 1.4
Standard deviation in seconds 5.0
Display response time from receipt of command at
DLA until transmission of a complete screen:
Average in seconds 0.2
Standard deviation in seconds 0.3
2.0 BIOSIS Databases Detailed Statistics
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Median session length (minutes:seconds) 7:51
Average session length (minutes:seconds) 13:00
Longest session recorded (minutes:seconds) 417:12
Average number of searches completed per session 3.3
Retrievals per search - median 13.0
Retrievals per search - average 1165.9
Retrievals per search - standard deviation 10162
Percent of searches completed with 0 results 21.5%
Percent of searches entered that are long 0.6%
Percent of long searches completed
(includes partial results) 43.3%
Commands entered, by type, excluding errors:
Total Percentage
__________ __________
FIND 49,918 29.3%
DISPLAY (excluding automatic displays) 65,331 38.4%
BROWSE 38 0.0%
HELP 2,558 1.5%
EXPLAIN 2,528 1.5%
SET/RESET 6,710 3.9%
SHOW 727 0.4%
ADD ON (AND, OR, AND NOT) 6,472 3.8%
LOGON or LOGOFF 21,726 12.8%
COMMENT 3 0.0%
SAVE 6,290 3.7%
USE 77 0.0%
OTHER 7,768 4.6%
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 15,443 28.4% 2,967 19.2% 19 141.3 687.4
TITLE WORD 7,047 13.0% 2,533 35.9% 15 789.2 5272.5
EXACT TITLE 478 0.9% 285 59.6% 2 122.6 550.7
KEYWORD 24,248 44.6% 4,086 16.8% 49 2350.5 14937.7
JOURNAL 1,850 3.4% 723 39.1% 586 4413.1 12194.1
EXACT JOURNAL 799 1.5% 289 36.2% 448 1812.3 3795.4
SOURCE 64 0.1% 31 48.4% 90 530.7 826.8
CONFERENCE 31 0.1% 23 74.2% 44 556.8 1105.9
BIOSYS NAMES 10 0.0% 9 90.0% 19,911 19911.0 0.0
BIOSYS CODES 79 0.1% 17 21.5% 28 502.6 2575.2
SUPERTAXA 178 0.3% 31 17.4% 22 960.4 6519.3
MAJ CONCEPT CDES 17 0.0% 0 0.0% 716 28486.2 87506.9
CONCEPT CODES 83 0.2% 6 7.2% 135 5356.3 18381.9
PUBLICATION TYPE 646 1.2% 62 9.6% 100 2642.2 10764.9
DATE 983 1.8% 149 15.2% 18 289.5 1665.7
LANGUAGE 134 0.2% 3 2.2% 27 1538.6 7482.2
ADDED 16 0.0% 10 62.5% 29 37.7 39.0
ARTICLE 2 0.0% 0 0.0% 125 125.0 0.0
AUTHOR AFFIL. 268 0.5% 46 17.2% 19 409.4 1694.2
ACCESSION NO. 8 0.0% 4 50.0% 1 1.0 0.0
ISSN 10 0.0% 7 70.0% 335 379.3 319.8
ISBN 4 0.0% 2 50.0% 38 38.0 26.9
PERIODICAL 1,627 3.0% 346 21.3% 5 267.1 2081.2
EXACT PE 236 0.4% 40 16.9% 3 66.5 253.8
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 2 0.0% 0 0.0% 4,066 4066.0 0.0
Other indexes 115 0.2% 21 18.3% 124 594.4 1350.2
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 4,549 9.2% 1,174 25.8% 11 649.3 5086.7
Single 45,044 90.8% 9,281 20.6% 34 1614.9 11740.9
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 38 100% 6 15.8% 7 8.4 9.7
DISPLAY commands, by type, excluding automatic displays:
REVIEW 1.7%
SHORT 88.3%
LONG 1.5%
TAGS 0.4%
FIELDS 1.1%
BROWSE REVIEW 0.0%
BROWSE SHORT 0.0%
BROWSE LONG 0.0%
PERIODICALS 3.0%
COMMENTS 0.0%
Other 3.8%
2.2 Error, EXPLAIN and HELP statistics
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Percent of commands that contained errors 11.2%
Ten most frequent errors:
1. NS command - no next screen 34.2%
2. First word of command is invalid 30.1%
3. FIND command with invalid index name 9.3%
4. PS command - no previous screen 4.1%
5. DISPLAY command contains invalid word 3.6%
6. Valid command at an inappropriate time 2.0%
7. Search term missing from search command 1.7%
8. DATE search with unrecognized word 1.3%
9. DISPLAY command-record numbers too large 1.2%
10. Command contains escape or arrow key 1.0%
11. All others 11.4%
Ten most frequent EXPLAIN requests:
1. GUIDE 17.6%
2. LOCATE (BIO DB) 17.3%
3. FIND 10.0%
4. INDEXES 7.6%
5. COMMANDS 7.2%
6. ADDON SEARCH 3.6%
7. DISPLAY 3.6%
8. Unrecognized term 3.4%
9. BIOSIS DATABASE 2.8%
10. MAIL 2.3%
11. All others 24.7%
Ten most frequent HELP situations:
1. Help requested from SET DB command 22.0%
2. First word of command is invalid 14.2%
3. FIND command with invalid index name 7.8%
4. DISPLAY command-first of >1 screen 5.9%
5. DISPLAY command - middle of >1 screen 5.8%
6. FIND command retrieves >1 book 5.3%
7. FIND command with zero results 4.7%
8. NS command - no next screen 3.9%
9. DISPLAY command - last of >1 screen 3.4%
10. DISPLAY command-complete in one screen 3.3%
11. All others 23.8%
Ten most frequent SHOW requests:
1. HISTORY 42.6%
2. SEARCH 22.1%
3. MAIL STATUS 11.6%
4. BIOSIS NEWS 4.7%
5. SETTINGS 3.1%
6. DLA NEWS 2.8%
7. DLA1 NEWS 1.9%
8. GLOSSARY 1.6%
9. MAIL SETTINGS 1.2%
10. UPDATE 1.0%
11. All others 7.4%