It can be divided into 5 parts: presidential numbers and ordinal numbers, affirmatory numbers and approximate numbers, measure words and non measure words, limited selection and non limited selection, and general opinions of those problems.

That threshold selection is based on Kurtosis analysis,it has lower complexity.

In image segmentation, the threshold selection is very important.

For the rate reduction induced by using cyclic redundancy check(CRC) in coded cooperation,an improved threshold selection relaying scheme is proposed for coded cooperation.

The author discussed in detail the various approaches for the Word Sense Disambiguation WSD: the approach for selection of commonly-used sense, the approach using POS for disambiguation, selectional restriction based approach, robust WSD, supervised learning approach, bootstrapping approach, unsupervised approach, dictionary-based approach.

Besides the foreword and the conclusion, it is divided into three chapters:Chapter one emphatically discusses selectional restriction of the highest degree adverbs to the three kinds of full words and its phrases, and summarizes the semantic general character of three kinds of full word and its phrases that can be modified by the highest degree adverbs: unbounded sense of quality and state.

Second,word similarities between the verb-noun selectional restrictions and the related words are calculated to locate the tenor words.

There are two selection restrictions in middle formation: first,the middle verbs should be event verbs that meet the aspectuality condition;second,the adverb or adjective in middle constructions should not be volitional ones that are under the control of agent.