Java 类名:com.alibaba.alink.operator.batch.dataproc.vector.VectorInteractionBatchOp
Python 类名:VectorInteractionBatchOp
对两个vector 中的元素两两相乘,并组成一个新的向量。
输入的两个向量长度分别为m和n,生成的向量长度为m*n
名称 | 中文名称 | 描述 | 类型 | 是否必须? | 取值范围 | 默认值 |
---|---|---|---|---|---|---|
outputCol | 输出结果列列名 | 输出结果列列名,必选 | String | ✓ | ||
selectedCols | 选择的列名 | 计算列对应的列名列表 | String[] | ✓ | ||
reservedCols | 算法保留列名 | 算法保留列 | String[] | null | ||
numThreads | 组件多线程线程个数 | 组件多线程线程个数 | Integer | 1 |
from pyalink.alink import * import pandas as pd useLocalEnv(1) df = pd.DataFrame([ ["$8$1:3,2:4,4:7", "$8$1:3,2:4,4:7"], ["$8$0:3,5:5", "$8$1:2,2:4,4:7"], ["$8$2:4,4:5", "$5$1:3,2:3,4:7"] ]) data = BatchOperator.fromDataframe(df, schemaStr="vec1 string, vec2 string") vecInter = VectorInteractionBatchOp().setSelectedCols(["vec1","vec2"]).setOutputCol("vec_product") vecInter.linkFrom(data).print()
import org.apache.flink.types.Row; import com.alibaba.alink.operator.batch.BatchOperator; import com.alibaba.alink.operator.batch.dataproc.vector.VectorInteractionBatchOp; import com.alibaba.alink.operator.batch.source.MemSourceBatchOp; import org.junit.Test; import java.util.Arrays; import java.util.List; public class VectorInteractionBatchOpTest { @Test public void testVectorInteractionBatchOp() throws Exception { List <Row> df = Arrays.asList( Row.of("$8$1:3,2:4,4:7", "$8$1:3,2:4,4:7"), Row.of("$8$0:3,5:5", "$8$1:2,2:4,4:7"), Row.of("$8$2:4,4:5", "$5$1:3,2:3,4:7") ); BatchOperator <?> data = new MemSourceBatchOp(df, "vec1 string, vec2 string"); BatchOperator <?> vecInter = new VectorInteractionBatchOp().setSelectedCols("vec1", "vec2").setOutputCol( "vec_product"); vecInter.linkFrom(data).print(); } }
vec1 | vec2 | vec_product |
---|---|---|
$8$1:3,2:4,4:7 | $8$1:3,2:4,4:7 | $64$9:9.0 10:12.0 12:21.0 17:12.0 18:16.0 20:28.0 33:21.0 34:28.0 36:49.0 |
$8$0:3,5:5 | $8$1:2,2:4,4:7 | $64$8:6.0 13:10.0 16:12.0 21:20.0 32:21.0 37:35.0 |
$8$2:4,4:5 | $5$1:3,2:3,4:7 | $40$10:12.0 12:15.0 18:12.0 20:15.0 34:28.0 36:35.0 |