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net.sf.classifier4J.AbstractClassifier	90%	90%

1		/*
2		* ====================================================================
3		*
4		* The Apache Software License, Version 1.1
5		*
6		* Copyright (c) 2003 Nick Lothian. All rights reserved.
7		*
8		* Redistribution and use in source and binary forms, with or without
9		* modification, are permitted provided that the following conditions
10		* are met:
11		*
12		* 1. Redistributions of source code must retain the above copyright
13		* notice, this list of conditions and the following disclaimer.
14		*
15		* 2. Redistributions in binary form must reproduce the above copyright
16		* notice, this list of conditions and the following disclaimer in
17		* the documentation and/or other materials provided with the
18		* distribution.
19		*
20		* 3. The end-user documentation included with the redistribution, if
21		* any, must include the following acknowlegement:
22		* "This product includes software developed by the
23		* developers of Classifier4J (http://classifier4j.sf.net/)."
24		* Alternately, this acknowlegement may appear in the software itself,
25		* if and wherever such third-party acknowlegements normally appear.
26		*
27		* 4. The name "Classifier4J" must not be used to endorse or promote
28		* products derived from this software without prior written
29		* permission. For written permission, please contact
30		* http://sourceforge.net/users/nicklothian/.
31		*
32		* 5. Products derived from this software may not be called
33		* "Classifier4J", nor may "Classifier4J" appear in their names
34		* without prior written permission. For written permission, please
35		* contact http://sourceforge.net/users/nicklothian/.
36		*
37		* THIS SOFTWARE IS PROVIDED ``AS IS'' AND ANY EXPRESSED OR IMPLIED
38		* WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES
39		* OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE
40		* DISCLAIMED. IN NO EVENT SHALL THE APACHE SOFTWARE FOUNDATION OR
41		* ITS CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
42		* SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT
43		* LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF
44		* USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND
45		* ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY,
46		* OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT
47		* OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
48		* SUCH DAMAGE.
49		* ====================================================================
50		*/
51
52		package net.sf.classifier4J;
53
54		/**
55		*
56		* Implementaion of the {@link net.sf.classifier4J.IClassifier#setMatchCutoff(double)}
57		* and {@link net.sf.classifier4J.IClassifier#isMatch(java.lang.String)} methods.
58		*
59		* @author Nick Lothian
60		*
61		*/
62	32	public abstract class AbstractClassifier implements IClassifier {
63
64	32	protected double cutoff = IClassifier.DEFAULT_CUTOFF;
65
66		/**
67		*
68		* <p>This implementation throws an IllegalArgumentException if cutoff is
69		* greater than 1 or less than 0.</p>
70		*
71		*
72		* @param cutoff Used to determine the mimimum probability that should be classified as a match
73		* @throws IllegalArgumentException if if cutoff is greater than 1 or less than 0
74		*
75		*/
76		public void setMatchCutoff(double cutoff) {
77	6	if (cutoff > 1 || cutoff < 0) {
78	0	throw new IllegalArgumentException("Cutoff must be equal or less than 1 and greater than or equal to 0");
79		}
80
81	6	this.cutoff = cutoff;
82	6	}
83
84		public double getMatchCutoff() {
85	6	return this.cutoff;
86		}
87
88		/**
89		* <p>Implementation of {@link net.sf.classifier4J.IClassifier#isMatch(java.lang.String)}
90		* method.</p>
91		*
92		* @see net.sf.classifier4J.IClassifier#isMatch(java.lang.String)
93		*/
94		public boolean isMatch(String input) throws ClassifierException {
95	2	double matchProbability = classify(input);
96
97	2	return isMatch(matchProbability);
98		}
99
100		/**
101		* @see net.sf.classifier4J.IClassifier#isMatch(double)
102		*/
103		public boolean isMatch(double matchProbability) {
104	8	return (matchProbability >= cutoff);
105		}
106
107		}

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