Machine Learning
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Real Machine Learning β€” simple, practical, and built on experience.
Learn step by step with clear explanations and working code.

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# Real-World Case Study: E-commerce Product Pipeline
import boto3
from PIL import Image
import io

def process_product_image(s3_bucket, s3_key):
# 1. Download from S3
s3 = boto3.client('s3')
response = s3.get_object(Bucket=s3_bucket, Key=s3_key)
img = Image.open(io.BytesIO(response['Body'].read()))

# 2. Standardize dimensions
img = img.convert("RGB")
img = img.resize((1200, 1200), Image.LANCZOS)

# 3. Remove background (simplified)
# In practice: use rembg or AWS Rekognition
img = remove_background(img)

# 4. Generate variants
variants = {
"web": img.resize((800, 800)),
"mobile": img.resize((400, 400)),
"thumbnail": img.resize((100, 100))
}

# 5. Upload to CDN
for name, variant in variants.items():
buffer = io.BytesIO()
variant.save(buffer, "JPEG", quality=95)
s3.upload_fileobj(
buffer,
"cdn-bucket",
f"products/{s3_key.split('/')[-1].split('.')[0]}_{name}.jpg",
ExtraArgs={'ContentType': 'image/jpeg', 'CacheControl': 'max-age=31536000'}
)

# 6. Generate WebP version
webp_buffer = io.BytesIO()
img.save(webp_buffer, "WEBP", quality=85)
s3.upload_fileobj(webp_buffer, "cdn-bucket", f"products/{s3_key.split('/')[-1].split('.')[0]}.webp")

process_product_image("user-uploads", "products/summer_dress.jpg")


By: @DataScienceM πŸ‘

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πŸ“Œ Ten Lessons of Building LLM Applications for Engineers

πŸ—‚ Category: LLM APPLICATIONS

πŸ•’ Date: 2025-11-25 | ⏱️ Read time: 22 min read

Drawing from two years of hands-on experience, this article outlines ten essential lessons for engineers building applications with Large Language Models. Gain practical insights and field-tested advice on structuring projects, optimizing workflows, and implementing effective evaluation strategies to successfully navigate the complexities of LLM development. This guide is for engineers looking to move from theory to production-ready applications.

#LLM #AIdevelopment #SoftwareEngineering #MLOps
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πŸ‘£ Rust Interview Deep Dive πŸ¦€πŸ”

A repository for systematic preparation for Rust interviews at the middle, senior, and staff levels. πŸ’ΌπŸ“š

Inside 100 real questions from interviews in product and infrastructure companies, detailed analyses with code examples and scenarios of tasks that occur in production. πŸ’»πŸ—οΈ Not "guess the program's output", but the mechanics on which real services are built. πŸ› οΈπŸš€

Here are lock-free structures, self-referential types in async, FFI with tensor libraries, correct Send on guards via await, memory ordering under loom, soundness of custom collections. πŸ”’βš‘ And it all starts with the basics. Ownership, borrowing, lifetimes. πŸ§±πŸ”„ Those who want can start from scratch or at the staff level. πŸšΆβ€β™‚οΈπŸ‘¨β€πŸ’»

https://github.com/Develp10/rustinterviewquiestions πŸ”—

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The guide Path to Senior Engineer Handbook has gathered resources for developers who want to advance to the level of Senior Engineer. πŸš€

Inside: πŸ“š

More than 50 newsletters on professional growth, system design, leadership, and web development. πŸ“ˆ

A selection of books on communication, technical writing, and building working relationships. 🀝

Selected YouTube channels, podcasts, and professional communities. 🎧

Courses, scientific articles, and educational platforms for a deeper study of topics. πŸŽ“

A good starting point for those who want to improve not only their technical skills, but also their architectural thinking, communication, and leadership competencies. πŸ’‘

Link: https://github.com/jordan-cutler/path-to-senior-engineer-handbook?utm_source=opensourceprojects.dev&ref=opensourceprojects.dev

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