Co-occurrence

If the text is "I go by car. And I play in the park", "I", "go", "car", "play" and "park" are in the relationship of co-occurrence.

Range of Co-occurrence

If the range of co-occurrence is the sentence. There are two sets of co-occurrence, "I", "go" and "car" set. "I", "play" and "park" set.

The range change the output of the analysis.

Wnen we use softwares of text mining, we need to care about how it define the range.