Research on Expert System of Japanese Auxiliary Teaching Based on BP Neural Network

Table 2

The y vector corresponding to the nine grammar points.

y vector	Grammar points
y1	Adverbs, conjunctions, etc.
y2	Auxiliary words and auxiliary verbs
y3	Adjective verbs
y4	Adjectives
y5	Verbs
y6	Nouns, numerals, pronouns
y7	Word order
y8	Sentence pattern
y9	Tense