Posts tagged "machine-learning"

machine-learning 8 posts

01 23.04.2026

Three Ways to Look at Time

ST-ResNet decomposes crime patterns into three temporal scales and models each one separately. Clever architecture, but does it actually help with only four years of NZ data?

data machine-learning open-data new-zealand

6min 1,490 w
11 16.04.2026

Teaching a Neural Network to Watch Crime Like Video

ConvLSTM was built for weather radar. Turns out predicting crime on a grid is basically the same problem. Here's how it works and what it learned.

data machine-learning open-data new-zealand

5min 1,376 w
21 09.04.2026

Can You Beat Last Month?

Before deep learning gets a chance, we need to know how well stupid-simple models perform. Turns out, they put up a real fight.

data machine-learning open-data new-zealand

3min 797 w
31 02.04.2026

What the Data Actually Shows

Before throwing deep learning at Auckland crime data, you need to actually look at it. Seasonal patterns, spatial hotspots, and the sparsity problem.

data machine-learning open-data new-zealand

4min 990 w
41 26.03.2026

Wrangling a Million Crime Records

NZ Police's crime dataset is publicly available, but it's UTF-16 encoded, full of trailing periods, and 32% of records don't know what time the crime happened. Here's how we cleaned it up.

data machine-learning open-data new-zealand

4min 944 w
51 26.03.2026

Crime as Video

Turn a million geo-tagged crime records into a 4D tensor by overlaying a 500m grid on Auckland. Crime prediction becomes video prediction.

data machine-learning open-data new-zealand

4min 1,071 w
61 26.03.2026

Giving Crime a Place on the Map

Crime records come with names and codes but no coordinates. Here's how we joined 1.15 million records to Stats NZ boundary files and gave every crime a place in physical space.

data machine-learning open-data new-zealand

4min 868 w
71 24.03.2026

Predicting Crime in Aotearoa

NZ Police publish over a million crime records openly. What happens when you point deep learning at them?

data machine-learning open-data new-zealand

5min 1,267 w