add text mining example

Author: zStupan

examples/text_mining.py

@@ -0,0 +1,20 @@
+import pandas as pd
+from niaarm.text import Corpus
+from niaarm.mine import get_text_rules
+from niapy.algorithms.basic import ParticleSwarmOptimization
+
+df = pd.read_json('datasets/text/artm_test_dataset.json', orient='records')
+documents = df['text'].tolist()
+corpus = Corpus.from_list(documents)
+
+algorithm = ParticleSwarmOptimization(population_size=200, seed=123)
+metrics = ('support', 'confidence', 'aws')
+rules, time = get_text_rules(corpus, max_terms=5, algorithm=algorithm, metrics=metrics, max_evals=10000, logging=True)
+
+if len(rules):
+    print(rules)
+    print(f'Run time: {time:.2f}s')
+    rules.to_csv('output.csv')
+else:
+    print('No rules generated')
+    print(f'Run time: {time:.2f}s')