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app.py
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import streamlit as st
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from janome.tokenizer import Tokenizer
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from janome.analyzer import Analyzer
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from janome.tokenfilter import *
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import matplotlib.pyplot as plt
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import japanize_matplotlib
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import numpy as np
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import pandas as pd
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import collections
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import itertools
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from collections import Counter
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import networkx as nx
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from wordcloud import WordCloud
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text = st.text_area(label='テキストを貼り付けてください', value='')
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if len(text) > 0:
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# トークン化
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tokenizer = Tokenizer()
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stop_word_list = []
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noun_list = []
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for token in tokenizer.tokenize(text):
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split_token = token.part_of_speech.split(',')
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if (split_token[0] == '名詞') | (split_token[0] == '動詞'):
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if token.surface not in stop_word_list:
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noun_list.append(token.surface)
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# ワードクラウドの作成
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wordcloud = WordCloud(
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background_color='whitesmoke', # 背景色
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font_path="font/ipaexg.ttf", # ダウンロードしたフォントのパス
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width=500, # 横幅
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height=500, # 高さ
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)
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noun_space = ' '.join(noun_list)
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wordcloud.generate(noun_space)
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# 共起行列
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pair_list = list(itertools.combinations([n for n in noun_list if len(n) >= 2], 2))
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cnt_pairs = Counter(pair_list)
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tops = sorted(
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cnt_pairs.items(),
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key=lambda x: x[1], reverse=True
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)[:50]
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# 重み付きデータの生成
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noun_1 = []
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noun_2 = []
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frequency = []
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# データフレームの作成
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for n,f in tops:
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noun_1.append(n[0])
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noun_2.append(n[1])
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frequency.append(f)
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df_G = pd.DataFrame({'前出名詞': noun_1, '後出名詞': noun_2, '出現頻度': frequency})
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# 重み付きデータの設定
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weighted_edges = np.array(df_G)
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# グラフオブジェクトの生成
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G = nx.Graph()
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# 重み付きデータの読み込み
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G.add_weighted_edges_from(weighted_edges)
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# ワードクラウドとネットワーク図の表示
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# ネットワーク図の描画
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fig = plt.figure(figsize=(12, 20))
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plt.rcParams["font.size"] = 18
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plt.subplot(2, 1, 1)
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plt.title("ネットワーク図")
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nx.draw_networkx(G,
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node_shape = "s",
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node_color = "c",
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node_size = 200,
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edge_color = "gray",
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font_family = "IPAexGothic" #"ipaexg00401/ipaexg.ttf" # フォント指定
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);
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plt.subplot(2, 1, 2)
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plt.title("ワードクラウド")
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plt.axis('off')
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plt.imshow(wordcloud)
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plt.tight_layout()
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st.pyplot(fig)
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