The Hidden Layer

The Hidden Layer https://essays.bloo-mind.ai/ Essays on AI quarto-1.9.37 Sun, 10 May 2026 23:00:00 GMT Hello Dell Zhang https://essays.bloo-mind.ai/posts/2026-05-11-hello/ This is a test post. Equations work: $\nabla_\theta J(\theta) = \mathbb{E}_\pi[\nabla_\theta \log \pi_\theta(a|s) \cdot Q^\pi(s,a)]$ .

Code chunks execute:

import numpy as np
np.random.seed(42)
samples = np.random.randn(1000)
print(f"mean={samples.mean():.4f}, std={samples.std():.4f}")

mean=0.0193, std=0.9787

And display math too: $J(\theta) = \mathbb{E}_{\tau \sim \pi_\theta}\left[\sum_{t=0}^{T} r(s_t, a_t)\right]$

]]> meta https://essays.bloo-mind.ai/posts/2026-05-11-hello/ Sun, 10 May 2026 23:00:00 GMT