Visualize per-year frequencies of strings from NDL-OCR text. The top 5 results are shown by default.
- Use slash (/) to compare multiple keywords. Example: 東大寺/興福寺
- Regular expressions are supported. Example:平.盛清.寺(.+?)寺
- We aggregate 1- to 5-gram strings that appear at least 6 times in the OCR.