“character frequency”的概念、定义、翻译、参考文献-科学参考

单词	character frequency
释义	character frequency Encyclopedia 文学现代汉字释 character frequency字频个体文字在语料文本中使用（出现）的次数与该语料文本总字次之比。用公式表示为：。其中表示字频，表示出现次数，表示语料文本总字次。
随便看	positively definite kernel positively definite matrix positively definite quadratic form positively graded module positively invariant subspace positively oriented base positively semi-definite positively stable point positively stable solution positive manifold positive map positive mapping positive mass conjecture positive matrix positive measure positive metric positive/negative helicity spinors positive number positive octant positive operator positive operator valued measure positive-operator valued measure POVM positive operator value measure positive operator value measure (POVM) positive ordering

科学参考收录了854744条科技类词条，基本涵盖了常见科技类参考文献及英语词汇的翻译，是科学学习和研究的有利工具。