Technology Topic Identification and Trend Prediction of New Energy Vehicle Using LDA Modeling

Table 4

Overall slope of each technology topic for new energy vehicles.

Topic category	Overall slope	Topic category	Overall slope	Topic category	Overall slope
Topic 1	0.23	Topic 10	0.42	Topic 19	0.26
Topic 2	0.42	Topic 11	0.08	Topic 20	0.74
Topic 3	0.50	Topic 12	0.09	Topic 21	0.15
Topic 4	0.25	Topic 13	0.30	Topic 22	0.18
Topic 5	0.20	Topic 14	0.35	Topic 23	0.20
Topic 6	0.29	Topic 15	0.46	Topic 24	0.38
Topic 7	0.15	Topic 16	0.29	Topic 25	0.27
Topic 8	0.56	Topic 17	0.24
Topic 9	0.24	Topic 18	0.31