{"id":106087,"date":"2026-09-16T16:40:40","date_gmt":"2026-09-16T08:40:40","guid":{"rendered":"https:\/\/www.wsisp.com\/helps\/106087.html"},"modified":"2026-09-16T16:40:40","modified_gmt":"2026-09-16T08:40:40","slug":"%e3%80%90%e6%9c%80%e6%96%b0%e5%a4%a7%e6%95%b0%e6%8d%ae%e9%a1%b9%e7%9b%ae%e3%80%91%e5%9f%ba%e4%ba%8e%e5%a4%a7%e6%95%b0%e6%8d%ae%e7%9a%84%e7%be%8e%e5%9b%bd%e6%95%99%e8%82%b2%e9%83%a8%e7%bb%bc%e5%90%88","status":"publish","type":"post","link":"https:\/\/www.wsisp.com\/helps\/106087.html","title":{"rendered":"\u3010\u6700\u65b0\u5927\u6570\u636e\u9879\u76ee\u3011\u57fa\u4e8e\u5927\u6570\u636e\u7684\u7f8e\u56fd\u6559\u80b2\u90e8\u7efc\u5408\u7814\u7a76\u6570\u636e\u5206\u6790\u4e0e\u53ef\u89c6\u5316\uff0c\u9644\u6e90\u7801_\u9ad8\u8d28\u91cf\u9879\u76ee_\u53ef\u89c6\u5316_\u6570\u636e\u5206\u6790_\u6bd5\u8bbe\u9009\u9898\u63a8\u8350_SPark_Hadoop_\u6bd5\u8bbe\u6307\u5bfc"},"content":{"rendered":"<p>&#x1f496;&#x1f496;\u4f5c\u8005&#xff1a;\u8ba1\u7b97\u673a\u6bd5\u4e1a\u8bbe\u8ba1\u6770\u745e 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decoding=\"async\" src=\"https:\/\/www.wsisp.com\/helps\/wp-content\/uploads\/2026\/09\/20260916084034-6aaa56020be64.png\" alt=\"\u5728\u8fd9\u91cc\u63d2\u5165\u56fe\u7247\u63cf\u8ff0\" \/> <img decoding=\"async\" src=\"https:\/\/www.wsisp.com\/helps\/wp-content\/uploads\/2026\/09\/20260916084035-6aaa56031d978.png\" alt=\"\u5728\u8fd9\u91cc\u63d2\u5165\u56fe\u7247\u63cf\u8ff0\" \/> <img decoding=\"async\" src=\"https:\/\/www.wsisp.com\/helps\/wp-content\/uploads\/2026\/09\/20260916084035-6aaa5603b4f6f.png\" alt=\"\u5728\u8fd9\u91cc\u63d2\u5165\u56fe\u7247\u63cf\u8ff0\" \/> <img decoding=\"async\" src=\"https:\/\/www.wsisp.com\/helps\/wp-content\/uploads\/2026\/09\/20260916084036-6aaa560457d51.png\" alt=\"\u5728\u8fd9\u91cc\u63d2\u5165\u56fe\u7247\u63cf\u8ff0\" \/> <img decoding=\"async\" src=\"https:\/\/www.wsisp.com\/helps\/wp-content\/uploads\/2026\/09\/20260916084037-6aaa560507f06.png\" alt=\"\u5728\u8fd9\u91cc\u63d2\u5165\u56fe\u7247\u63cf\u8ff0\" \/> <img decoding=\"async\" src=\"https:\/\/www.wsisp.com\/helps\/wp-content\/uploads\/2026\/09\/20260916084037-6aaa5605a4f43.png\" alt=\"\u5728\u8fd9\u91cc\u63d2\u5165\u56fe\u7247\u63cf\u8ff0\" \/> <img decoding=\"async\" src=\"https:\/\/www.wsisp.com\/helps\/wp-content\/uploads\/2026\/09\/20260916084038-6aaa56064baf0.png\" alt=\"\u5728\u8fd9\u91cc\u63d2\u5165\u56fe\u7247\u63cf\u8ff0\" \/> <img decoding=\"async\" src=\"https:\/\/www.wsisp.com\/helps\/wp-content\/uploads\/2026\/09\/20260916084038-6aaa5606dfa3e.png\" alt=\"\u5728\u8fd9\u91cc\u63d2\u5165\u56fe\u7247\u63cf\u8ff0\" \/><\/p>\n<h2>\u57fa\u4e8e\u5927\u6570\u636e\u7684\u7f8e\u56fd\u6559\u80b2\u90e8\u7efc\u5408\u7814\u7a76\u6570\u636e\u5206\u6790\u4e0e\u53ef\u89c6\u5316\u4ee3\u7801\u5c55\u793a<\/h2>\n<p><span class=\"token keyword\">from<\/span> pyspark<span class=\"token punctuation\">.<\/span>sql <span class=\"token keyword\">import<\/span> SparkSession<br \/>\n<span class=\"token keyword\">from<\/span> pyspark<span class=\"token punctuation\">.<\/span>sql<span class=\"token punctuation\">.<\/span>functions <span class=\"token keyword\">import<\/span> col<span class=\"token punctuation\">,<\/span> count<span class=\"token punctuation\">,<\/span> avg<span class=\"token punctuation\">,<\/span> desc<span class=\"token punctuation\">,<\/span> year<span class=\"token punctuation\">,<\/span> to_date<span class=\"token punctuation\">,<\/span> when<br \/>\nspark <span class=\"token operator\">&#061;<\/span> SparkSession<span class=\"token punctuation\">.<\/span>builder<span class=\"token punctuation\">.<\/span>appName<span class=\"token punctuation\">(<\/span><span class=\"token string\">&#034;USEdResearchAnalysis&#034;<\/span><span class=\"token punctuation\">)<\/span><span class=\"token punctuation\">.<\/span>master<span class=\"token punctuation\">(<\/span><span class=\"token string\">&#034;local[*]&#034;<\/span><span class=\"token punctuation\">)<\/span><span class=\"token punctuation\">.<\/span>config<span class=\"token punctuation\">(<\/span><span class=\"token string\">&#034;spark.sql.shuffle.partitions&#034;<\/span><span class=\"token punctuation\">,<\/span> <span class=\"token string\">&#034;4&#034;<\/span><span class=\"token punctuation\">)<\/span><span class=\"token punctuation\">.<\/span>enableHiveSupport<span class=\"token punctuation\">(<\/span><span class=\"token punctuation\">)<\/span><span class=\"token punctuation\">.<\/span>getOrCreate<span class=\"token punctuation\">(<\/span><span class=\"token punctuation\">)<\/span><br \/>\n<span class=\"token keyword\">def<\/span> <span class=\"token function\">edu_fairness_analysis<\/span><span class=\"token punctuation\">(<\/span>input_path<span class=\"token punctuation\">)<\/span><span class=\"token punctuation\">:<\/span><br \/>\n    df <span class=\"token operator\">&#061;<\/span> spark<span class=\"token punctuation\">.<\/span>read<span class=\"token punctuation\">.<\/span>option<span class=\"token punctuation\">(<\/span><span class=\"token string\">&#034;header&#034;<\/span><span class=\"token punctuation\">,<\/span> <span class=\"token boolean\">True<\/span><span class=\"token punctuation\">)<\/span><span class=\"token punctuation\">.<\/span>option<span class=\"token punctuation\">(<\/span><span class=\"token string\">&#034;inferSchema&#034;<\/span><span class=\"token punctuation\">,<\/span> <span class=\"token boolean\">True<\/span><span class=\"token punctuation\">)<\/span><span class=\"token punctuation\">.<\/span>csv<span class=\"token punctuation\">(<\/span>input_path<span class=\"token punctuation\">)<\/span><br \/>\n    clean_df <span class=\"token operator\">&#061;<\/span> df<span class=\"token punctuation\">.<\/span>dropna<span class=\"token punctuation\">(<\/span>subset<span class=\"token operator\">&#061;<\/span><span class=\"token punctuation\">[<\/span><span class=\"token string\">&#034;study_id&#034;<\/span><span class=\"token punctuation\">,<\/span> <span class=\"token string\">&#034;sample_size&#034;<\/span><span class=\"token punctuation\">,<\/span> <span class=\"token string\">&#034;equity_score&#034;<\/span><span class=\"token punctuation\">,<\/span> <span class=\"token string\">&#034;research_year&#034;<\/span><span class=\"token punctuation\">]<\/span><span class=\"token punctuation\">)<\/span><span class=\"token punctuation\">.<\/span><span class=\"token builtin\">filter<\/span><span class=\"token punctuation\">(<\/span>col<span class=\"token punctuation\">(<\/span><span class=\"token string\">&#034;sample_size&#034;<\/span><span class=\"token punctuation\">)<\/span> <span class=\"token operator\">&gt;<\/span> <span class=\"token number\">0<\/span><span class=\"token punctuation\">)<\/span><span class=\"token punctuation\">.<\/span><span class=\"token builtin\">filter<\/span><span class=\"token punctuation\">(<\/span>col<span class=\"token punctuation\">(<\/span><span class=\"token string\">&#034;equity_score&#034;<\/span><span class=\"token punctuation\">)<\/span><span class=\"token punctuation\">.<\/span>between<span class=\"token punctuation\">(<\/span><span class=\"token number\">0<\/span><span class=\"token punctuation\">,<\/span> <span class=\"token number\">100<\/span><span class=\"token punctuation\">)<\/span><span class=\"token punctuation\">)<\/span><br \/>\n    clean_df <span class=\"token operator\">&#061;<\/span> clean_df<span class=\"token punctuation\">.<\/span>withColumn<span class=\"token punctuation\">(<\/span><span class=\"token string\">&#034;year_tag&#034;<\/span><span class=\"token punctuation\">,<\/span> year<span class=\"token punctuation\">(<\/span>to_date<span class=\"token punctuation\">(<\/span>col<span class=\"token punctuation\">(<\/span><span class=\"token string\">&#034;research_year&#034;<\/span><span class=\"token punctuation\">)<\/span><span class=\"token punctuation\">.<\/span>cast<span class=\"token punctuation\">(<\/span><span class=\"token string\">&#034;string&#034;<\/span><span class=\"token punctuation\">)<\/span><span class=\"token punctuation\">,<\/span> <span class=\"token string\">&#034;yyyy&#034;<\/span><span class=\"token punctuation\">)<\/span><span class=\"token punctuation\">)<\/span><span class=\"token punctuation\">)<\/span><span class=\"token punctuation\">.<\/span>withColumn<span class=\"token punctuation\">(<\/span><span class=\"token string\">&#034;equity_level&#034;<\/span><span class=\"token punctuation\">,<\/span> when<span class=\"token punctuation\">(<\/span>col<span class=\"token punctuation\">(<\/span><span class=\"token string\">&#034;equity_score&#034;<\/span><span class=\"token punctuation\">)<\/span> <span class=\"token operator\">&gt;&#061;<\/span> <span class=\"token number\">80<\/span><span class=\"token punctuation\">,<\/span> <span class=\"token string\">&#034;high&#034;<\/span><span class=\"token punctuation\">)<\/span><span class=\"token punctuation\">.<\/span>when<span class=\"token punctuation\">(<\/span>col<span class=\"token punctuation\">(<\/span><span class=\"token string\">&#034;equity_score&#034;<\/span><span class=\"token punctuation\">)<\/span> <span class=\"token operator\">&gt;&#061;<\/span> <span class=\"token number\">60<\/span><span class=\"token punctuation\">,<\/span> <span class=\"token string\">&#034;medium&#034;<\/span><span class=\"token punctuation\">)<\/span><span class=\"token punctuation\">.<\/span>otherwise<span class=\"token punctuation\">(<\/span><span class=\"token string\">&#034;low&#034;<\/span><span class=\"token punctuation\">)<\/span><span class=\"token punctuation\">)<\/span><br \/>\n    equity_stat <span class=\"token operator\">&#061;<\/span> clean_df<span class=\"token punctuation\">.<\/span>groupBy<span class=\"token punctuation\">(<\/span><span class=\"token string\">&#034;year_tag&#034;<\/span><span class=\"token punctuation\">,<\/span> <span class=\"token string\">&#034;equity_level&#034;<\/span><span class=\"token punctuation\">)<\/span><span class=\"token punctuation\">.<\/span>agg<span class=\"token punctuation\">(<\/span>count<span class=\"token punctuation\">(<\/span><span class=\"token string\">&#034;study_id&#034;<\/span><span class=\"token punctuation\">)<\/span><span class=\"token punctuation\">.<\/span>alias<span class=\"token punctuation\">(<\/span><span class=\"token string\">&#034;study_count&#034;<\/span><span class=\"token punctuation\">)<\/span><span class=\"token punctuation\">,<\/span> avg<span class=\"token punctuation\">(<\/span><span class=\"token string\">&#034;sample_size&#034;<\/span><span class=\"token punctuation\">)<\/span><span class=\"token punctuation\">.<\/span>alias<span class=\"token punctuation\">(<\/span><span class=\"token string\">&#034;avg_sample&#034;<\/span><span class=\"token punctuation\">)<\/span><span class=\"token punctuation\">,<\/span> avg<span class=\"token punctuation\">(<\/span><span class=\"token string\">&#034;equity_score&#034;<\/span><span class=\"token punctuation\">)<\/span><span class=\"token punctuation\">.<\/span>alias<span class=\"token punctuation\">(<\/span><span class=\"token string\">&#034;avg_equity&#034;<\/span><span class=\"token punctuation\">)<\/span><span class=\"token punctuation\">)<\/span><span class=\"token punctuation\">.<\/span>orderBy<span class=\"token punctuation\">(<\/span><span class=\"token string\">&#034;year_tag&#034;<\/span><span class=\"token punctuation\">,<\/span> <span class=\"token string\">&#034;equity_level&#034;<\/span><span class=\"token punctuation\">)<\/span><br \/>\n    equity_stat<span class=\"token punctuation\">.<\/span>write<span class=\"token punctuation\">.<\/span>mode<span class=\"token punctuation\">(<\/span><span class=\"token string\">&#034;overwrite&#034;<\/span><span class=\"token punctuation\">)<\/span><span class=\"token punctuation\">.<\/span>option<span class=\"token punctuation\">(<\/span><span class=\"token string\">&#034;header&#034;<\/span><span class=\"token punctuation\">,<\/span> <span class=\"token boolean\">True<\/span><span class=\"token punctuation\">)<\/span><span class=\"token punctuation\">.<\/span>csv<span class=\"token punctuation\">(<\/span><span class=\"token string\">&#034;hdfs:\/\/\/eduresearch\/output\/equity_stat&#034;<\/span><span class=\"token punctuation\">)<\/span><br \/>\n    <span class=\"token keyword\">return<\/span> equity_stat<span class=\"token punctuation\">.<\/span>collect<span class=\"token punctuation\">(<\/span><span class=\"token punctuation\">)<\/span><br \/>\n<span class=\"token keyword\">def<\/span> <span class=\"token function\">intervention_effect_analysis<\/span><span class=\"token punctuation\">(<\/span>input_path<span class=\"token punctuation\">)<\/span><span class=\"token punctuation\">:<\/span><br \/>\n    df <span class=\"token operator\">&#061;<\/span> spark<span class=\"token punctuation\">.<\/span>read<span class=\"token punctuation\">.<\/span>option<span class=\"token punctuation\">(<\/span><span class=\"token string\">&#034;header&#034;<\/span><span class=\"token punctuation\">,<\/span> <span class=\"token boolean\">True<\/span><span class=\"token punctuation\">)<\/span><span class=\"token punctuation\">.<\/span>option<span class=\"token punctuation\">(<\/span><span class=\"token string\">&#034;inferSchema&#034;<\/span><span class=\"token punctuation\">,<\/span> <span class=\"token boolean\">True<\/span><span class=\"token punctuation\">)<\/span><span class=\"token punctuation\">.<\/span>csv<span class=\"token punctuation\">(<\/span>input_path<span class=\"token punctuation\">)<\/span><br \/>\n    clean_df <span class=\"token operator\">&#061;<\/span> df<span class=\"token punctuation\">.<\/span>dropna<span class=\"token punctuation\">(<\/span>subset<span class=\"token operator\">&#061;<\/span><span class=\"token punctuation\">[<\/span><span class=\"token string\">&#034;study_id&#034;<\/span><span class=\"token punctuation\">,<\/span> <span class=\"token string\">&#034;intervention_type&#034;<\/span><span class=\"token punctuation\">,<\/span> <span class=\"token string\">&#034;effect_score&#034;<\/span><span class=\"token punctuation\">,<\/span> <span class=\"token string\">&#034;sample_size&#034;<\/span><span class=\"token punctuation\">]<\/span><span class=\"token punctuation\">)<\/span><span class=\"token punctuation\">.<\/span><span class=\"token builtin\">filter<\/span><span class=\"token punctuation\">(<\/span>col<span class=\"token punctuation\">(<\/span><span class=\"token string\">&#034;effect_score&#034;<\/span><span class=\"token punctuation\">)<\/span><span class=\"token punctuation\">.<\/span>isNotNull<span class=\"token punctuation\">(<\/span><span class=\"token punctuation\">)<\/span><span class=\"token punctuation\">)<\/span><span class=\"token punctuation\">.<\/span><span class=\"token builtin\">filter<\/span><span class=\"token punctuation\">(<\/span>col<span class=\"token punctuation\">(<\/span><span class=\"token string\">&#034;sample_size&#034;<\/span><span class=\"token punctuation\">)<\/span> <span class=\"token operator\">&gt;&#061;<\/span> <span class=\"token number\">30<\/span><span class=\"token punctuation\">)<\/span><br \/>\n    clean_df <span class=\"token operator\">&#061;<\/span> clean_df<span class=\"token punctuation\">.<\/span>withColumn<span class=\"token punctuation\">(<\/span><span class=\"token string\">&#034;effect_level&#034;<\/span><span class=\"token punctuation\">,<\/span> when<span class=\"token punctuation\">(<\/span>col<span class=\"token punctuation\">(<\/span><span class=\"token string\">&#034;effect_score&#034;<\/span><span class=\"token punctuation\">)<\/span> <span class=\"token operator\">&gt;&#061;<\/span> <span class=\"token number\">0.6<\/span><span class=\"token punctuation\">,<\/span> <span class=\"token string\">&#034;strong&#034;<\/span><span class=\"token punctuation\">)<\/span><span class=\"token punctuation\">.<\/span>when<span class=\"token punctuation\">(<\/span>col<span class=\"token punctuation\">(<\/span><span class=\"token string\">&#034;effect_score&#034;<\/span><span class=\"token punctuation\">)<\/span> <span class=\"token operator\">&gt;&#061;<\/span> <span class=\"token number\">0.3<\/span><span class=\"token punctuation\">,<\/span> <span class=\"token string\">&#034;medium&#034;<\/span><span class=\"token punctuation\">)<\/span><span class=\"token punctuation\">.<\/span>otherwise<span class=\"token punctuation\">(<\/span><span class=\"token string\">&#034;weak&#034;<\/span><span class=\"token punctuation\">)<\/span><span class=\"token punctuation\">)<\/span><br \/>\n    effect_stat <span class=\"token operator\">&#061;<\/span> clean_df<span class=\"token punctuation\">.<\/span>groupBy<span class=\"token punctuation\">(<\/span><span class=\"token string\">&#034;intervention_type&#034;<\/span><span class=\"token punctuation\">,<\/span> <span class=\"token string\">&#034;effect_level&#034;<\/span><span class=\"token punctuation\">)<\/span><span class=\"token punctuation\">.<\/span>agg<span class=\"token punctuation\">(<\/span>count<span class=\"token punctuation\">(<\/span><span class=\"token string\">&#034;study_id&#034;<\/span><span class=\"token punctuation\">)<\/span><span class=\"token punctuation\">.<\/span>alias<span class=\"token punctuation\">(<\/span><span class=\"token string\">&#034;case_count&#034;<\/span><span class=\"token punctuation\">)<\/span><span class=\"token punctuation\">,<\/span> avg<span class=\"token punctuation\">(<\/span><span class=\"token string\">&#034;effect_score&#034;<\/span><span class=\"token punctuation\">)<\/span><span class=\"token punctuation\">.<\/span>alias<span class=\"token punctuation\">(<\/span><span class=\"token string\">&#034;avg_effect&#034;<\/span><span class=\"token punctuation\">)<\/span><span class=\"token punctuation\">,<\/span> avg<span class=\"token punctuation\">(<\/span><span class=\"token string\">&#034;sample_size&#034;<\/span><span class=\"token punctuation\">)<\/span><span class=\"token punctuation\">.<\/span>alias<span class=\"token punctuation\">(<\/span><span class=\"token string\">&#034;avg_sample&#034;<\/span><span class=\"token punctuation\">)<\/span><span class=\"token punctuation\">)<\/span><span class=\"token punctuation\">.<\/span>orderBy<span class=\"token punctuation\">(<\/span>desc<span class=\"token punctuation\">(<\/span><span class=\"token string\">&#034;avg_effect&#034;<\/span><span class=\"token punctuation\">)<\/span><span class=\"token punctuation\">)<\/span><br \/>\n    effect_stat<span class=\"token punctuation\">.<\/span>write<span class=\"token punctuation\">.<\/span>mode<span class=\"token punctuation\">(<\/span><span class=\"token string\">&#034;overwrite&#034;<\/span><span class=\"token punctuation\">)<\/span><span class=\"token punctuation\">.<\/span>option<span class=\"token punctuation\">(<\/span><span class=\"token string\">&#034;header&#034;<\/span><span class=\"token punctuation\">,<\/span> <span class=\"token boolean\">True<\/span><span class=\"token punctuation\">)<\/span><span class=\"token punctuation\">.<\/span>csv<span class=\"token punctuation\">(<\/span><span class=\"token string\">&#034;hdfs:\/\/\/eduresearch\/output\/effect_stat&#034;<\/span><span class=\"token punctuation\">)<\/span><br \/>\n    <span class=\"token keyword\">return<\/span> effect_stat<span class=\"token punctuation\">.<\/span>collect<span class=\"token punctuation\">(<\/span><span class=\"token punctuation\">)<\/span><br \/>\n<span class=\"token keyword\">def<\/span> <span class=\"token function\">topic_insight_analysis<\/span><span class=\"token punctuation\">(<\/span>input_path<span class=\"token punctuation\">)<\/span><span class=\"token punctuation\">:<\/span><br \/>\n    df <span class=\"token operator\">&#061;<\/span> spark<span class=\"token punctuation\">.<\/span>read<span class=\"token punctuation\">.<\/span>option<span class=\"token punctuation\">(<\/span><span class=\"token string\">&#034;header&#034;<\/span><span class=\"token punctuation\">,<\/span> <span class=\"token boolean\">True<\/span><span class=\"token punctuation\">)<\/span><span class=\"token punctuation\">.<\/span>option<span class=\"token punctuation\">(<\/span><span class=\"token string\">&#034;inferSchema&#034;<\/span><span class=\"token punctuation\">,<\/span> <span class=\"token boolean\">True<\/span><span class=\"token punctuation\">)<\/span><span class=\"token punctuation\">.<\/span>csv<span class=\"token punctuation\">(<\/span>input_path<span class=\"token punctuation\">)<\/span><br \/>\n    clean_df <span class=\"token operator\">&#061;<\/span> df<span class=\"token punctuation\">.<\/span>dropna<span class=\"token punctuation\">(<\/span>subset<span class=\"token operator\">&#061;<\/span><span class=\"token punctuation\">[<\/span><span class=\"token string\">&#034;study_id&#034;<\/span><span class=\"token punctuation\">,<\/span> <span class=\"token string\">&#034;topic_field&#034;<\/span><span class=\"token punctuation\">,<\/span> <span class=\"token string\">&#034;research_year&#034;<\/span><span class=\"token punctuation\">,<\/span> <span class=\"token string\">&#034;method_type&#034;<\/span><span class=\"token punctuation\">]<\/span><span class=\"token punctuation\">)<\/span><span class=\"token punctuation\">.<\/span><span class=\"token builtin\">filter<\/span><span class=\"token punctuation\">(<\/span>col<span class=\"token punctuation\">(<\/span><span class=\"token string\">&#034;topic_field&#034;<\/span><span class=\"token punctuation\">)<\/span> <span class=\"token operator\">!&#061;<\/span> <span class=\"token string\">&#034;&#034;<\/span><span class=\"token punctuation\">)<\/span><br \/>\n    clean_df <span class=\"token operator\">&#061;<\/span> clean_df<span class=\"token punctuation\">.<\/span>withColumn<span class=\"token punctuation\">(<\/span><span class=\"token string\">&#034;year_tag&#034;<\/span><span class=\"token punctuation\">,<\/span> year<span class=\"token punctuation\">(<\/span>to_date<span class=\"token punctuation\">(<\/span>col<span class=\"token punctuation\">(<\/span><span class=\"token string\">&#034;research_year&#034;<\/span><span class=\"token punctuation\">)<\/span><span class=\"token punctuation\">.<\/span>cast<span class=\"token punctuation\">(<\/span><span class=\"token string\">&#034;string&#034;<\/span><span class=\"token punctuation\">)<\/span><span class=\"token punctuation\">,<\/span> <span class=\"token string\">&#034;yyyy&#034;<\/span><span class=\"token punctuation\">)<\/span><span class=\"token punctuation\">)<\/span><span class=\"token punctuation\">)<\/span><br \/>\n    topic_df <span class=\"token operator\">&#061;<\/span> clean_df<span class=\"token punctuation\">.<\/span>groupBy<span class=\"token punctuation\">(<\/span><span class=\"token string\">&#034;topic_field&#034;<\/span><span class=\"token punctuation\">,<\/span> <span class=\"token string\">&#034;year_tag&#034;<\/span><span class=\"token punctuation\">,<\/span> <span class=\"token string\">&#034;method_type&#034;<\/span><span class=\"token punctuation\">)<\/span><span class=\"token punctuation\">.<\/span>agg<span class=\"token punctuation\">(<\/span>count<span class=\"token punctuation\">(<\/span><span class=\"token string\">&#034;study_id&#034;<\/span><span class=\"token punctuation\">)<\/span><span class=\"token punctuation\">.<\/span>alias<span class=\"token punctuation\">(<\/span><span class=\"token string\">&#034;topic_count&#034;<\/span><span class=\"token punctuation\">)<\/span><span class=\"token punctuation\">)<\/span><span class=\"token punctuation\">.<\/span>orderBy<span class=\"token punctuation\">(<\/span>desc<span class=\"token punctuation\">(<\/span><span class=\"token string\">&#034;topic_count&#034;<\/span><span class=\"token punctuation\">)<\/span><span class=\"token punctuation\">)<\/span><br \/>\n    pivot_df <span class=\"token operator\">&#061;<\/span> topic_df<span class=\"token punctuation\">.<\/span>groupBy<span class=\"token punctuation\">(<\/span><span class=\"token string\">&#034;topic_field&#034;<\/span><span class=\"token punctuation\">)<\/span><span class=\"token punctuation\">.<\/span>pivot<span class=\"token punctuation\">(<\/span><span class=\"token string\">&#034;year_tag&#034;<\/span><span class=\"token punctuation\">)<\/span><span class=\"token punctuation\">.<\/span>agg<span class=\"token punctuation\">(<\/span>count<span class=\"token punctuation\">(<\/span><span class=\"token string\">&#034;study_id&#034;<\/span><span class=\"token punctuation\">)<\/span><span class=\"token punctuation\">)<\/span><span class=\"token punctuation\">.<\/span>fillna<span class=\"token punctuation\">(<\/span><span class=\"token number\">0<\/span><span class=\"token punctuation\">)<\/span><br \/>\n    pivot_df<span class=\"token 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