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   源码介绍

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使用c#语言,visual studio开发平台，控制台命令输入，简单易懂，实现apriori算法

  class DataSets
    {
        private DataTable datatable = new DataTable();
        private ArrayList transactiondb = new ArrayList();
        private ArrayList item_name_list = new ArrayList();
        private List<string> arrtibute_list;

        public DataSets(List<string> str_attr, string str_path)
        {
            this.arrtibute_list = str_attr;
            this.InitDataTable();
            this.LoadDataSersFromFile(str_path);
            this.GetTransactionDB();
        }

        public DataTable MyDataSets
        {
            get
            {
                return this.datatable;
            }
        }

        public List<string> MyAttributeList
        {
            get
            {
                return this.arrtibute_list;
            }
        }

        public ArrayList MyTransactionDB
        {
            get
            {
                return this.transactiondb;
            }
        }

        public ArrayList MyAttributeListName
        {
            get
            {
                return this.item_name_list;
            }
        }

        /// <summary>
        /// 初始化存放数据集的DataTable,用动态数组设置列名
        /// </summary>
        private void InitDataTable()
        {
            foreach (object o in this.arrtibute_list)
            {
                this.datatable.Columns.Add(o.ToString(), typeof(object));
            }
        }

        /// <summary>
        /// 从指定的ucr读入数据集，并保存到DataTable中
        /// </summary>
        /// <param name="path"></param>
        private void LoadDataSersFromFile(string path)
        {
            try
            {
                using (StreamReader sr = new StreamReader(path, Encoding.ASCII))
                {
                    DataRow row;
                    string line;
                    System.Text.RegularExpressions.Regex r = new System.Text.RegularExpressions.Regex(",");
                    string[] line_str;
                    while ((line = sr.ReadLine()) != null)
                    {
                        char[] dele = { '.' };
                        line_str = r.Split(line.TrimEnd(dele));
                        int col = 0;
                        row = this.datatable.NewRow();
                        for (int i = 0; i < line_str.Length; i )
                        {
                            if (line_str[i].Equals(" ") == false)
                            {
                                //row[col] = (int)line[i] - 48;
                                row[col] = line_str[i];
                                col ;
                            }
                        }
                        this.datatable.Rows.Add(row);
                    }
                }
            }
            catch (Exception ex)
            {
                Console.WriteLine("读取文件出错！" ex.Message);
            }
        }

        /// <summary>
        /// 生成事务数据库
        /// </summary>
        private void GetTransactionDB()
        {
            for (int i = 0; i < this.datatable.Rows.Count; i )
            {
                ItemSet item = new ItemSet();
                for (int j = 0; j < this.datatable.Columns.Count; j )
                {
                    GenericItemName(this.datatable.Columns[j].ColumnName "=" this.datatable.Rows[i][j].ToString());
                    item.ItemName = item.ItemName this.datatable.Columns[j].ColumnName "=" this.datatable.Rows[i][j].ToString() ",";
                }
                item.ItemName.TrimStart(null);
                char[] deleChar = { ',' };
                item.ItemName.TrimEnd(deleChar);
                this.transactiondb.Add(item);
            }
        }

        /// <summary>
        /// 生成一项集
        /// </summary>
        /// <param name="item_name"></param>
        private void GenericItemName(string item_name)
        {
            ItemSet item = new ItemSet();
            bool is_exist=false;
            foreach (ItemSet i in this.item_name_list)
            {
                if (i.ItemName.Equals(item_name))
                {
                    is_exist = true;
                    break;
                }
            }
            if (is_exist == false)
            {
                item.ItemName = item_name;
                this.item_name_list.Add(item);
            }
        }