给定一组文本，计算其中单词出现的频率。


text = "this is a sample text with some repeating words and some new ones"
{"this": 1, "is": 1, "a": 1, "sample": 1, "text": 1, "with": 1, "some": 2, "repeating": 1, "words": 1, "and": 1, "new": 1, "ones": 1}