Metrical feature extraction of English books on tourism

In recent years, approximately 16 million Japanese people have travelled abroad, and 19 million foreigners have come to Japan for sightseeing. It can be said that it is just the time of sightseeing right now. Therefore, knowledge of tourism has become more and more important, and reading materials in English, that can be said to be a world common language, indispensable. With enough knowledge of the features of English in the field beforehand, reading of texts will become easier. In this paper, several English books on tourism were investigated and compared with journalism in terms of metrical linguistics. In short, frequency characteristics of character- and word-appearance were investigated using a program written in C++. These characteristics were approximated by an exponential function. Furthermore, the percentage of Japanese junior high school required vocabulary and American basic vocabulary was calculated to obtain the difficulty-level as well as the K-characteristic of each material.