Pairwise co-occurence of terms within a 7 word window in the US utility patents on a per-year basis. The date associated with each patent is the year of the priority date of the patent.
The three modes of the tensor correspond to year-term-term, and the values are , where is the frequency in which the words and appeared in the window. Each slice of the tensor is symmetric.
|Dimensions||46 x 239,172 x 239,172|