Ejemplo n.º 1
0
        /// <summary>
        /// foamliu, 2009/04/15, 生成样本.
        /// </summary>
        /// <param name="set"></param>
        private static ExampleSet GetExamples(CategoryCollection collect)
        {
            const int Rows          = 4;
            const int Columns       = 4;
            const int CellWidth     = 100;
            const int CellHeight    = 100;
            const int ExampleNumber = 640;

            ExampleSet set = new ExampleSet();

            set.Examples.Clear();
            Random rand = new Random();

            for (int i = 0; i < ExampleNumber; i++)
            {
                int x = (int)(rand.NextDouble() * Columns * CellWidth);
                int y = (int)(rand.NextDouble() * Rows * CellHeight);

                Example e = new Example();
                e.X     = new SparseVector(2);
                e.X[0]  = x;
                e.X[1]  = y;
                e.Label = collect.GetCategoryById(
                    GetCat(x, y, CellWidth, CellHeight));

                set.AddExample(e);
            }

            return(set);
        }