Maven Robotics wants to steal your robot deployment deal21m ago Positron Valued at $5 Billion in New Funding as Demand for AI Chips Surges30m ago 7 Steps to Become a Forward Deployed Engineer in 202638m ago Amazon partners with OpenAI to let users of Amazon's DSP run ads in ChatGPT in a pilot program limited to the US; ChatGPT Ads hit $1B in ARR last month53m ago D-Matrix Connects Raptor XPUs to NVIDIA AI Factories via NVLink Fusion1h ago Source: Meta AI researcher Andrew Tulloch, who came over from Thinking Machine Lab as one of the highest paid employees last year, is leaving the company (Reed Albergotti/Semafor)1h ago Mother Horrified When Instagram’s AI Scours Social Media for Invasive Information About Her Young Daughters1h ago Mach Industries, which makes unmanned military vehicles and weapons, raised $600M in an extension to its $300M Series C, doubling its valuation to $3.7B1h ago Salesforce Unveils Six-Capability Trusted AI Harness for Enterprises1h ago US closes $1.9bn loan to restart the Iowa nuclear plant powering Google1h ago OpenAI Gives US Agencies 50% Off Models, Ending $1 Per Year Deal1h ago 47,000 job listings reveal the engineering roles that AI is creating1h ago Anthropic's Alignment Science lead says there is a ">10%" chance AI could kill all humans within the next decade and is worried about recursive self-improvement (Evan Hubinger/@evanhub)2h ago Ukraine says AI is moving beyond drones and into strike missiles for the first time2h ago

Maven Robotics wants to steal your robot deployment deal21m ago Positron Valued at $5 Billion in New Funding as Demand for AI Chips Surges30m ago 7 Steps to Become a Forward Deployed Engineer in 202638m ago Amazon partners with OpenAI to let users of Amazon's DSP run ads in ChatGPT in a pilot program limited to the US; ChatGPT Ads hit $1B in ARR last month53m ago D-Matrix Connects Raptor XPUs to NVIDIA AI Factories via NVLink Fusion1h ago Source: Meta AI researcher Andrew Tulloch, who came over from Thinking Machine Lab as one of the highest paid employees last year, is leaving the company (Reed Albergotti/Semafor)1h ago Mother Horrified When Instagram’s AI Scours Social Media for Invasive Information About Her Young Daughters1h ago Mach Industries, which makes unmanned military vehicles and weapons, raised $600M in an extension to its $300M Series C, doubling its valuation to $3.7B1h ago Salesforce Unveils Six-Capability Trusted AI Harness for Enterprises1h ago US closes $1.9bn loan to restart the Iowa nuclear plant powering Google1h ago OpenAI Gives US Agencies 50% Off Models, Ending $1 Per Year Deal1h ago 47,000 job listings reveal the engineering roles that AI is creating1h ago Anthropic's Alignment Science lead says there is a ">10%" chance AI could kill all humans within the next decade and is worried about recursive self-improvement (Evan Hubinger/@evanhub)2h ago Ukraine says AI is moving beyond drones and into strike missiles for the first time2h ago

Machine Learning10 min reading time

My Fall-Detection Model Scored 94%, and It Was Lying to Me

Towards Data SciencePublished Aug 7, 2026

A fall-detection model trained on video frame data reported 94.3% accuracy due to a data leakage issue from random splitting of sequential frames. Correct evaluation revealed the true accuracy was 69%, highlighting the importance of proper data splitting in sequential data tasks.

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