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Lezwon Castelino
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Lezwon Castelino
@Lezwon
Software Engineer 👨🏽‍💻 | Ex-@PyTorchLightnin Core ⚡ | Solutions Hacker 🧙‍♂️ | 20+ Hackathons 🏆
Bengaluru, India
techtalk.digitalpress.blog
Joined March 2010
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  • user avatar
    Lezwon Castelino
    @Lezwon
    May 25
    This article delves into the intricacies of Data Sketches and why it works. Do give it a read if you find it interesting. open.substack.com/pub/lezwon/p/d… #DataEngineering #DataSketches #SQL #ApacheSpark
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    Deconstructing Data Sketches
    From lezwon.substack.com
  • user avatar
    Lezwon Castelino
    @Lezwon
    May 11
    Unoptimized UDFs can be one of the biggest performance bottlenecks in a Spark application. If you are a Spark programmer and would like to improve your application performance do give it a read. #ApacheSpark #DataEngineering
    lezwon.substack.com
    A Deep Dive into Spark UDFs
    The UDF Trap: Unmasking PySpark's Biggest Performance Bottleneck
  • user avatar
    Lezwon Castelino
    @Lezwon
    Mar 30, 2025
    Hey Folks, In this part of my Cancer Detection series, I’m breaking down Partial AUC (pAUC) 📉, the key metric in the #ISIC2024 cancer detection competition. Do check it out and let me know what you guys think. lezwoncastelino.medium.com/dissecting-the… #MachineLearning 🤖 #MedTech 🏥
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    Dissecting the Partial AUC Metric for ISIC 2024
    From lezwoncastelino.medium.com
  • user avatar
    Lezwon Castelino
    @Lezwon
    Mar 2, 2025
    🚀 Part 3 of my series on the ISIC 2024 Skin Cancer Detection Challenge is published! 🧠🔬 If you're into #DataScience, #AI, or just curious about medical diagnostics, this one’s for you! Check it out and let me know what you think. 👇
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    Skin Cancer Detection: Part 3: Modeling and Prediction
    From lezwoncastelino.medium.com
  • user avatar
    Lezwon Castelino
    @Lezwon
    Feb 16, 2025
    Hey everyone! Here’s Part 2 of my Skin Cancer Detection series, where I dive into the dataset from Kaggle’s competition. Check it out if you’re into data science or just curious about how this works! 🚀 #DataScience #Kaggle #SkinCancerDetection
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    Skin Cancer Detection: Part 2: Exploratory Data Analysis
    From link.medium.com

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