# An option for every team

There are many different ways that features can be scored during roadmap prioritization. One team might use the RICE model, while another could use a weighted impact formula. Further, there are different ways of quantifying effort. Some teams prefer Fibonacci, and others a simple 1-10 model.

Canny's prioritization feature is flexible in supporting any model you want to use. In order to support every model, the formula is a tad complicated. But at the end of the day, it boils down to the Impact / Effort formula you'd expect.

## If you're really technical, here's the complete formula we use:

We combine all impact factors (normalized to 0-100), then divide by effort (normalized to 1-100). Then, we multiply by 1000 purely for the sake of readability. It's just nicer to compare numbers like 25 and 73 than 0.025 and 0.073.

This means **the score will be normalized to integers between 0 and 100k.** However, the vast majority of scores will end up between 0 and 1000, which makes for easy reading and comparison.

If you're using **RICE**, for example, the formula will end up looking like this:

If you're using a **weighted impact model**, the formula will end up looking like this:

# Impact Factor Types

Canny offers a variety of impact factor types to give you flexibility in how you want to quantify impact:

**0-10.**Integers from 0 to 10. Normalized to 0-100 by being squared.**0-100.**Numbers between 0.0 and 100.0. No normalization needed.**Fibonacci.**Integers from 0 to 233. Normalized to 0-100 by being divided by 233.**Stars.**Stars between 0 and 5. Normalized to 0-100 by being doubled and then squared.**Checkbox.**Either checked or not checked. Normalized to either 0 or 100.**Percentage.**Integers between 0 and 100. No normalization needed.**Votes.**A special impact type, based on the number of votes on the post in Canny. Normalized to 0-100 by dividing by the roadmap's highest post score.

# Effort Types

Canny also offers several effort types to provide flexibility around quantifying effort:

**1-10.**Integers from 1 to 10. Normalized to 1-100 by being squared.**1-100.**Numbers between 0.1 and 100.0. No normalization needed.**Fibonacci.**Integers from 1 to 233. Normalized to 1-100 by being divided by 2.33.**Stars.**Stars between 1 and 5. Normalized to 1-100 by being doubled and then squared.