[SOLVED] CS database 1. Title of Database: Abalone data

1. Title of Database: Abalone data

2. Sources:

(a) Original owners of database:
Marine Resources Division
Marine Research Laboratories Taroona
Department of Primary Industry and Fisheries, Tasmania
GPO Box 619F, Hobart, Tasmania 7001, Australia
(contact: Warwick Nash +61 02 277277, [email protected])

(b) Donor of database:
Sam Waugh ([email protected])
Department of Computer Science, University of Tasmania
GPO Box 252C, Hobart, Tasmania 7001, Australia

(c) Date received: December 1995

3. Past Usage:

Sam Waugh (1995) Extending and benchmarking Cascade-Correlation, PhD
thesis, Computer Science Department, University of Tasmania.

Test set performance (final 1044 examples, first 3133 used for training):
24.86% Cascade-Correlation (no hidden nodes)
26.25% Cascade-Correlation (5 hidden nodes)
21.5%C4.5
0.0%Linear Discriminate Analysis
3.57% k=5 Nearest Neighbour
(Problem encoded as a classification task)

Data set samples are highly overlapped.Further information is required
to separate completely using affine combinations.Other restrictions
to data set examined.

David Clark, Zoltan Schreter, Anthony Adams A Quantitative Comparison of
Dystal and Backpropagation, submitted to the Australian Conference on
Neural Networks (ACNN96). Data set treated as a 3-category classification
problem (grouping ring classes 1-8, 9 and 10, and 11 on).

Test set performance (3133 training, 1044 testing as above):
64%Backprop
55%Dystal
Previous work (Waugh, 1995) on same data set:
61.40% Cascade-Correlation (no hidden nodes)
65.61% Cascade-Correlation (5 hidden nodes)
59.2%C4.5
32.57% Linear Discriminate Analysis
62.46% k=5 Nearest Neighbour

4. Relevant Information Paragraph:

Predicting the age of abalone from physical measurements.The age of
abalone is determined by cutting the shell through the cone, staining it,
and counting the number of rings through a microscope a boring and
time-consuming task.Other measurements, which are easier to obtain, are
used to predict the age.Further information, such as weather patterns
and location (hence food availability) may be required to solve the problem.

From the original data examples with missing values were removed (the
majority having the predicted value missing), and the ranges of the
continuous values have been scaled for use with an ANN (by dividing by 200).

Data comes from an original (non-machine-learning) study:

Warwick J Nash, Tracy L Sellers, Simon R Talbot, Andrew J Cawthorn and
Wes B Ford (1994) The Population Biology of Abalone (_Haliotis_
species) in Tasmania. I. Blacklip Abalone (_H. rubra_) from the North
Coast and Islands of Bass Strait, Sea Fisheries Division, Technical
Report No. 48 (ISSN 1034-3288)

5. Number of Instances: 4177

6. Number of Attributes: 8

7. Attribute information:

Given is the attribute name, attribute type, the measurement unit and a
brief description.The number of rings is the value to predict: either
as a continuous value or as a classification problem.

NameData TypeMeas.Description
–
SexnominalM, F, and I (infant)
LengthcontinuousmmLongest shell measurement
Diametercontinuousmmperpendicular to length
Heightcontinuousmmwith meat in shell
Whole weightcontinuousgramswhole abalone
Shucked weightcontinuousgramsweight of meat
Viscera weightcontinuousgramsgut weight (after bleeding)
Shell weightcontinuousgramsafter being dried
Ringsinteger+1.5 gives the age in years

Statistics for numeric domains:

LengthDiamHeightWholeShuckedVisceraShellRings
Min0.0750.0550.0000.0020.0010.0010.0021
Max0.8150.6501.1302.8261.4880.7601.005 29
Mean0.5240.4080.1400.8290.3590.1810.2399.934
SD0.1200.0990.0420.4900.2220.1100.1393.224
Correl0.5570.5750.5570.5400.4210.5040.6281.0

8. Missing Attribute Values: None

9. Class Distribution:

ClassExamples

11
21
315
457
5115
6259
7391
8568
9689
10634
11487
12267
13203
14126
15103
1667
1758
1842
1932
2026
2114
226
239
242
251
261
272
291
–
Total4177