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Tagged articles

threshold

4 articles · Page 1 of 1
Wu Shixiong's Large Model Academy
Wu Shixiong's Large Model Academy
Jul 23, 2026 · Artificial Intelligence

How to Prevent RAG from Hallucinating When No Answer Exists – Beyond Simple Similarity Thresholds

The article explains why a plain similarity‑threshold check cannot reliably stop Retrieval‑Augmented Generation from fabricating answers, introduces a four‑stage evidence‑control framework, details how to calibrate thresholds with balanced positive and negative samples, and outlines concrete actions for handling insufficient evidence.

LLMRAGRetrieval
0 likes · 21 min read
How to Prevent RAG from Hallucinating When No Answer Exists – Beyond Simple Similarity Thresholds
DataFunTalk
DataFunTalk
Nov 26, 2021 · Artificial Intelligence

Solving Model Prediction Errors: A Comprehensive Bad‑Case Treatment Methodology

This article presents a step‑by‑step methodology for diagnosing and fixing model prediction errors—especially bad cases—in NLP and search systems, covering sample bias, threshold selection, preprocessing, post‑processing, validation cycles, and guidance on when to replace the model.

NLPPostProcessingPreprocessing
0 likes · 11 min read
Solving Model Prediction Errors: A Comprehensive Bad‑Case Treatment Methodology
Python Programming Learning Circle
Python Programming Learning Circle
Mar 5, 2020 · Artificial Intelligence

Biological Neurons and Their Simple Mathematical Representation in Neural Networks

This article explains how biological neurons inspire artificial neural networks, describing neuron concepts, threshold firing, weighted inputs, bias, activation functions such as the step and sigmoid functions, and shows how these ideas are expressed mathematically and visualized with diagrams.

Artificial IntelligenceBiasNeuron
0 likes · 13 min read
Biological Neurons and Their Simple Mathematical Representation in Neural Networks