1. 使用sklearn数据作为示例: from sklearn import datasetsdata = datasets.load_iris()X = data.datay = data.targetX_train, X_test, y_train, y_test = train_test_split(X, y, test_size=0.4, seed=2) clf = XGBoost()clf.fit(X_train, y_train)y_pred = clf.predict(X_test)accuracy =...
在各种scikits中,scikit-learn和scikit-image在2012年11月被描述为“维护良好和流行”。 安装: sudo apt-get update sudo apt-get install python-sklearn
我们将通过Python的sklearn库来实现BM25算法,并使用随机搜索进行参数调优。 4.3.1数据准备 importpandasaspd #示例数据 data={ movie_id:[1,2,3,4,5], description:[ 一位年轻律师在法庭上为正义而战, 在遥远的星球上,一场星际战争正在酝酿, 一个关于友情和成长的温馨故事, 探索未知的深海,揭开海洋的秘密, ...
其标准公式(无平滑项)为IDF(t)=log(Nn(t)) 而答案中的公式(也是sklearn中的实现)为IDF(t)=log(N+1n(t)+1) 其他的数学解释如下图 原题代码如下,做题的时候没看见collection.Counter的导入。 importnumpyasnpfromcollectionsimportCounterdefcalculate_bm25_scores(corpus,query,k1=1.5,b=0.75):# You...
search-engine mongodb sklearn django-application bootstrap-4 movies-recommendation okapi-bm25 movies-search Updated May 28, 2020 Python itslasagne / betches Star 0 Code Issues Pull requests A detailed study on enhancing the working of an Automated Question Generation & Answering system in a re...
git clone https://github.com/MachineLP/TextMatch cd TextMatch pip install -r requirements.txt export PYTHONPATH=${PYTHONPATH}:../TextMatch python examples/text_search.py examples/text_search.py importsysfromtextmatch.models.text_embedding.model_factory_sklearnimportModelFactoryif__name__=='__...
使用Python和sklearn库来计算评估指标: fromsklearn.metricsimportprecision_score,recall_score,f1_score,average_precision_score importnumpyasnp #假设的推荐结果与真实相关项目 y_true=[1,0,1,1,0,1,0,0,1,1]#真实相关性 y_pred=[1,1,1,0,1,1,1,0,0,0]#推荐结果 ...
数据预处理是特征分析的第一步,它包括清洗数据、去除停用词、词干提取等步骤。以下是一个使用Python进行数据预处理的示例: importpandasaspd fromsklearn.feature_extraction.textimportCountVectorizer fromsklearn.preprocessingimportMinMaxScaler fromnltk.corpusimportstopwords ...
git clone https://github.com/MachineLP/TextMatch cd TextMatch pip install -r requirements.txt export PYTHONPATH=${PYTHONPATH}:../TextMatch python examples/text_search.py examples/text_search.py importsysfromtextmatch.models.text_embedding.model_factory_sklearnimportModelFactoryif__name__=='__...
(jaccard) python tests/models_test/bow_sklearn_test.py (bow) python tests/models_test/tf_idf_sklearn_test.py (tf_idf) python tests/models_test/ngram_tf_idf_sklearn_test.py (ngram_tf_idf) python tests/models_test/w2v_test.py (w2v) python tests/models_test/albert_test.py (bert)...