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f.FENG/Knowledge Lab知识实验室
A PERSONAL KNOWLEDGE LAB个人知识实验室VOL. 010

Ideas, made
visible.
让知识,变得可见。

Stay curious. Look closely.保持好奇,认真看世界。

Start with a question or an observation. Make complex ideas clear, and keep the details worth noticing.从具体的问题与观察出发,把复杂的原理讲清楚,把值得留意的细节记录下来。

Follow a thread沿着一个问题深入

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Kronos in quantitative finance: from forecasts to tradesKronos 金融量化研究:从预测到交易

A Kronos forecast is only one input to a strategy. Examine the return labels, risk constraints and costs that determine whether it adds trading value.从收益标签、风险与交易成本出发,判断 Kronos 的预测能否为策略增加价值。

Roadster engineering 06: thermal limits and repeatable performanceRoadster 技术拆解 06:热管理与重复性能

In this example, doubling thermal capacity passes ten pulses but exceeds the steady temperature limit. Heat rejection and gas replenishment determine the useful upgrades.本算例中,热容翻倍能通过十次输出,稳态仍超温;按热收支与补气时间确定改进优先级。

Roadster engineering 05: force allocation and yaw controlRoadster 技术拆解 05:受力分配与偏航控制

A worked force-allocation model: longitudinal capacity, directional yaw reserve, actuator delay and reallocation after capacity loss.用同一受力模型计算纵向能力、方向性偏航余量、执行器延迟,以及能力下降后的重分配。

When does running a model yourself pay off?本地部署大模型,多久能回本?

Buying hardware replaces a recurring API bill with upfront and running costs. Work out monthly savings first, then check whether they repay the investment in time.买机器能否省钱,取决于每月少付的 API 费能否覆盖运行成本,并在设备淘汰前收回初投。

Derivations, experiments, and moments worth keeping.推导、实验,还有值得留下的片刻。

About Dapeng关于冯大鹏

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