catboost/catboost

Support custom evaluation metrics in R

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#350 opened on May 17, 2018

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 (9 comments) (1 reaction) (0 assignees)Python (1,163 forks)batch import
Rfeature requesthelp wanted

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Description

Problem: I found documentation for defining a custom metric function in python from:https://tech.yandex.com/catboost/doc/dg/concepts/python-usages-examples-docpage/#custom-loss-function-eval-metric But is there a way to do this in R and how should the function be defined?

catboost version: 0.8 Operating System: Windows 10 CPU: i5-2500k

Contributor guide

Research direction
Investigate if custom evaluation metrics are supported in the R package. If not, implement support or provide a workaround using the Python package via reticulate.
Tech stack
rpython
Domain
machine learning
Issue type
Feature
DifficultyEstimated implementation difficulty for a new contributor, from 1 for very small changes to 5 for expert-level work.
3
Estimated timeA rough time range for an experienced contributor to investigate, implement, test, and prepare a pull request.
3-5 days
Activity statusHow available the issue appears right now: fresh, active, stale, blocked, or waiting on maintainer input.
Active
ClarityHow clearly the issue explains the expected change, acceptance criteria, and next step.
Clear
Prerequisites
Rcatboost
Newbie friendlinessA 1-100 score estimating how approachable this issue is for first-time contributors.
60