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significance.py
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significance.py
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from argparse import ArgumentParser
import numpy as np
from scipy.stats import ttest_rel
def read_metrics(filename):
macro_f1 = []
span_f1 = []
with open(filename) as f:
for line in f:
macro, span = map(float, line.rstrip().split('\t'))
macro_f1.append(macro)
span_f1.append(span)
return macro_f1, span_f1
def mean_std(array):
return np.mean(array), np.std(array)
def parse_args():
parser = ArgumentParser()
parser.add_argument('name')
parser.add_argument('--lang', required=True)
parser.add_argument('--dataset', required=True)
parser.add_argument('--compare', default=None)
parser.add_argument('-p', default=0.05, type=float)
return parser.parse_args()
def fmt(array):
return ' ± '.join(map(lambda e: f"{e:.2f}", mean_std(array)))
def test_significance(key, group1, group2, p):
statistic, p_val = ttest_rel(group1, group2)
prefix = ""
if p_val > p:
prefix = "NOT "
print(f"{key}: {prefix}statistically significant at p<={p} (p-value={p_val}, stat={statistic})")
def main(args):
filename_format = f"results/{{name}}-{args.lang}-{args.dataset}.tsv"
macro_f1s, span_f1s = read_metrics(filename_format.format(name=args.name))
print(f"{args.name}: {fmt(macro_f1s)} / {fmt(span_f1s)}")
if args.compare:
macro_f1s_comp, span_f1s_comp = read_metrics(filename_format.format(name=args.compare))
print(f"{args.compare}: {fmt(macro_f1s_comp)} / {fmt(span_f1s_comp)}")
test_significance('macro', macro_f1s, macro_f1s_comp, args.p)
test_significance('span', span_f1s, span_f1s_comp, args.p)
if __name__ == '__main__':
main(parse_args())