Technology is a powerful force in our society. Data, software,and communication can be used for bad: to entrench unfair power structures, to undermine human rights, and to protect vested interests. But they can also be used for good: to make underrepresented people's voice heard, to create opportunities for everyone, and to avert disasters. We are dedicated to working toward the good.
摘要:
String str1 和 str2 所指向的对象在 "字符串常量池" 中,是同一个对象。 All literal strings and string valued constant expressions are interned,When the intern method is invoke 阅读全文
摘要:
Spark Java API 之 CountVectorizer 由于在Spark中文本处理与分析的一些机器学习算法的输入并不是文本数据,而是数值型向量。因此,需要进行转换。而将文本数据转换成数值型的向量有很多种方法,CountVectorizer是其中之一。 A CountVectorizer c 阅读全文