以下是使用PySpark将术语按两个因素分组的解决方法的示例代码:
from pyspark.sql import SparkSession
from pyspark.sql.functions import col
# 创建SparkSession
spark = SparkSession.builder.appName("Term Grouping").getOrCreate()
# 创建示例数据集
data = [("term1", "factor1", 10),
("term2", "factor2", 15),
("term3", "factor1", 5),
("term4", "factor2", 12),
("term5", "factor1", 8),
("term6", "factor2", 7),
("term7", "factor1", 3),
("term8", "factor2", 20),
("term9", "factor1", 6),
("term10", "factor2", 9),
("term11", "factor1", 13),
("term12", "factor2", 11)]
# 将数据集转换为DataFrame
df = spark.createDataFrame(data, ["term", "factor", "value"])
# 按两个因素分组并获取前10个术语
grouped_terms = df.groupBy("factor").agg({"term": "collect_list"}).limit(10)
# 打印结果
grouped_terms.show()
输出结果将显示按两个因素分组后的前10个术语列表:
+-------+--------------------+
| factor|collect_list(term) |
+-------+--------------------+
|factor1|[term1, term3, te...|
|factor2|[term2, term4, te...|
+-------+--------------------+
请根据您的具体需求调整代码。
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