Inside SearchGuard: How Google detects bots and what the SerpAPI lawsuit reveals

We fully decrypted SearchGuard, the anti-bot system protecting Google Search. Here's exactly how Google tells humans and bots apart.
IEEE

Variable Scale Relative Entropy Detection for Non-Cooperative Underwater Acoustic Pulse Signals

Abstract: This work investigates the detection of non-cooperative underwater acoustic pulse signals at low signal-to-noise ratio (SNR). A variable scale relative entropy (VSRE) pulse signal detection ...