blob: b19f3fb917ac6309c14d7c74c8fa9b78f0e33ec9 (
plain)
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
81
82
83
84
85
86
87
88
89
90
91
92
93
94
95
96
97
98
99
100
101
102
103
104
105
106
107
108
109
110
111
112
113
114
115
116
117
118
119
120
121
122
123
124
125
126
127
128
129
130
131
132
133
134
135
136
137
138
139
140
141
142
143
144
145
146
147
148
149
150
|
package phrase;
import io.FileUtil;
import joptsimple.OptionParser;
import joptsimple.OptionSet;
import java.io.File;
import java.io.IOException;
import java.io.PrintStream;
import java.util.Random;
import arr.F;
public class Trainer
{
public static void main(String[] args)
{
OptionParser parser = new OptionParser();
parser.accepts("help");
parser.accepts("in").withRequiredArg().ofType(File.class);
parser.accepts("out").withRequiredArg().ofType(File.class);
parser.accepts("parameters").withRequiredArg().ofType(File.class);
parser.accepts("topics").withRequiredArg().ofType(Integer.class).defaultsTo(5);
parser.accepts("em-iterations").withRequiredArg().ofType(Integer.class).defaultsTo(5);
parser.accepts("pr-iterations").withRequiredArg().ofType(Integer.class).defaultsTo(0);
parser.accepts("threads").withRequiredArg().ofType(Integer.class).defaultsTo(0);
parser.accepts("scale-phrase").withRequiredArg().ofType(Double.class).defaultsTo(5.0);
parser.accepts("scale-context").withRequiredArg().ofType(Double.class).defaultsTo(0.0);
parser.accepts("seed").withRequiredArg().ofType(Long.class).defaultsTo(0l);
parser.accepts("convergence-threshold").withRequiredArg().ofType(Double.class).defaultsTo(1e-6);
OptionSet options = parser.parse(args);
if (options.has("help") || !options.has("in"))
{
try {
parser.printHelpOn(System.err);
} catch (IOException e) {
System.err.println("This should never happen. Really.");
e.printStackTrace();
}
System.exit(1);
}
int tags = (Integer) options.valueOf("topics");
int em_iterations = (Integer) options.valueOf("em-iterations");
int pr_iterations = (Integer) options.valueOf("pr-iterations");
double scale_phrase = (Double) options.valueOf("scale-phrase");
double scale_context = (Double) options.valueOf("scale-context");
int threads = (Integer) options.valueOf("threads");
double threshold = (Double) options.valueOf("convergence-threshold");
if (options.has("seed"))
F.rng = new Random((Long) options.valueOf("seed"));
if (tags <= 1 || scale_phrase < 0 || scale_context < 0 || threshold < 0)
{
System.err.println("Invalid arguments. Try again!");
System.exit(1);
}
Corpus corpus = null;
File infile = (File) options.valueOf("in");
try {
System.out.println("Reading concordance from " + infile);
corpus = Corpus.readFromFile(FileUtil.reader(infile));
corpus.printStats(System.out);
} catch (IOException e) {
System.err.println("Failed to open input file: " + infile);
e.printStackTrace();
System.exit(1);
}
System.out.println("Running with " + tags + " tags " +
"for " + em_iterations + " EM and " + pr_iterations + " PR iterations " +
"with scale " + scale_phrase + " phrase and " + scale_context + " context " +
"and " + threads + " threads");
System.out.println();
PhraseCluster cluster = new PhraseCluster(tags, corpus, scale_phrase, scale_context, threads);
double last = 0;
for (int i=0; i<em_iterations+pr_iterations; i++)
{
double o;
if (i < em_iterations)
o = cluster.EM();
else if (scale_context == 0)
{
if (threads >= 1)
o = cluster.PREM_phrase_constraints_parallel();
else
o = cluster.PREM_phrase_constraints();
}
else
o = cluster.PREM_phrase_context_constraints();
System.out.println("ITER: "+i+" objective: " + o);
if (i != 0 && Math.abs((o - last) / o) < threshold)
{
last = o;
if (i < em_iterations)
{
i = em_iterations - 1;
continue;
}
else
break;
}
last = o;
}
double pl1lmax = cluster.phrase_l1lmax();
double cl1lmax = cluster.context_l1lmax();
System.out.println("\nFinal posterior phrase l1lmax " + pl1lmax + " context l1lmax " + cl1lmax);
if (pr_iterations == 0)
System.out.println("With PR objective " + (last - scale_phrase*pl1lmax - scale_context*cl1lmax));
if (options.has("out"))
{
File outfile = (File) options.valueOf("out");
try {
PrintStream ps = FileUtil.printstream(outfile);
cluster.displayPosterior(ps);
ps.close();
} catch (IOException e) {
System.err.println("Failed to open output file: " + outfile);
e.printStackTrace();
System.exit(1);
}
}
if (options.has("parameters"))
{
File outfile = (File) options.valueOf("parameters");
PrintStream ps;
try {
ps = FileUtil.printstream(outfile);
cluster.displayModelParam(ps);
ps.close();
} catch (IOException e) {
System.err.println("Failed to open output parameters file: " + outfile);
e.printStackTrace();
System.exit(1);
}
}
if (cluster.pool != null)
cluster.pool.shutdown();
}
}
|
