About

Jashua Luna

How I approach difficult technical questions, and the habits that shape the work.

The practice

I work at the boundary of research and engineering.

I define a technical question, build the software or experiment needed to test it, compare the result against simpler baselines and falsification controls, and document what the evidence supports—including when the answer is negative.

That process has taken me across climate forecasting, financial time series, signal processing, synthetic-aperture radar, and the built environment. The domains change; the working method is consistent: explicit assumptions, reproducible implementation, controlled evaluation, and clear technical writing.

I choose projects out of curiosity and finish them with working code, documented methods, or a clear written result.

Working habits

How I approach a project

Each habit below links to a study where I used it.

Define the test

I write down the result that would answer the question before I start building around it.

In the Signal-Scale Scan, I fixed the timeframes, horizons, targets, and decision rules before running the comparison.

Read the Signal-Scale Scan

Start with a baseline

I compare a new method with a simple alternative before deciding whether the added complexity helped.

In WaveGAN-2, matched linear and convolutional baselines beat the neural wavelet variants at every horizon.

Read the WaveGAN-2 study

Keep limitations visible

I put the assumptions that affect a result next to the result itself.

The ENSO series charter records the shared metrics and the cases that should not be compared directly.

Read the ENSO series charter

Report the result plainly

I publish useful negative findings and partial improvements without recasting them as wins.

The Frozen-Backbone Head Lab found volatility information but no durable directional edge.

Read the Frozen-Backbone Head Lab