Security Analysis of Social Network Topic Mining Using Big Data and Optimized Deep Convolutional Neural Network

Table 2

Data security detection algorithm flow based on semantic feature extraction.

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(1) Algorithm: DCNN

(2) Input: the raw points of

(3) Output: the ground surface points

(4) Parameters:

(5) Mapping all the point cloud data into the polar grid

(6) Initialization

(7) For do

(8) For do

(9)      

(10)  The z-coordinate value of the point plus the laser installation

(11)     Order the points in the grid at height

(12)    n = 1

(13)   IF

(14)    return

(15)   Else

(16)       While

(17)        N = n + 1;

(18)       End while

(19)   End IF

(20) End For

(21) End For

(22) Return

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