Giter Club home page Giter Club logo

integrated-ehr-pipeline's Issues

Pyspark Timezone Issue 

from pyspark.sql import SparkSession
import pandas as pd
spark = (
        SparkSession.builder.master(f"local[8]")
        .appName("Main_Preprocess")
        .getOrCreate()
    )
df = pd.read_csv('/{MIMIC-IV}/icustays.csv.gz', nrows=1000)
df.head()
df['intime'] = pd.to_datetime(df['intime'])
df = spark.createDataFrame(df)
df.show()

Problem

  • Occur when local time zone != JVM (Pyspark) time zone (i.e. spark.conf.get('spark.sql.session.timeZone')!=$ date)

Affect

  • Intime/Outtime... are shifted but Charttime/Labtime... not -> Events are wrongly filtered

Solution (Temporal)

  • spark.conf.set('spark.sql.session.timeZone', 'Asia/Seoul')

Recommend Projects

  • React photo React

    A declarative, efficient, and flexible JavaScript library for building user interfaces.

  • Vue.js photo Vue.js

    🖖 Vue.js is a progressive, incrementally-adoptable JavaScript framework for building UI on the web.

  • Typescript photo Typescript

    TypeScript is a superset of JavaScript that compiles to clean JavaScript output.

  • TensorFlow photo TensorFlow

    An Open Source Machine Learning Framework for Everyone

  • Django photo Django

    The Web framework for perfectionists with deadlines.

  • D3 photo D3

    Bring data to life with SVG, Canvas and HTML. 📊📈🎉

Recommend Topics

  • javascript

    JavaScript (JS) is a lightweight interpreted programming language with first-class functions.

  • web

    Some thing interesting about web. New door for the world.

  • server

    A server is a program made to process requests and deliver data to clients.

  • Machine learning

    Machine learning is a way of modeling and interpreting data that allows a piece of software to respond intelligently.

  • Game

    Some thing interesting about game, make everyone happy.

Recommend Org

  • Facebook photo Facebook

    We are working to build community through open source technology. NB: members must have two-factor auth.

  • Microsoft photo Microsoft

    Open source projects and samples from Microsoft.

  • Google photo Google

    Google ❤️ Open Source for everyone.

  • D3 photo D3

    Data-Driven Documents codes.