alterlab-scikit-survival

alterlab-scikit-survival is a skill for Claude Code from AlterLab-IEU/AlterLab-Academic-Skills. It costs 84 tokens per session (4,080 once invoked), scanned A, a copy of scikit-survival, MIT.

A Python toolkit for studying how long it takes until an event happens, such as recovery or equipment failure, even when some records do not include the event. It supports models for incomplete observations and competing events.

In plain words
What is it for?
Use it to analyze censored study data, estimate survival curves, fit Cox and tree-based models, study competing risks, and evaluate predictions with measures such as the concordance index and Brier score.
Why use it?
It helps avoid treating incomplete follow-up records as ordinary data, which can produce misleading results. It also provides established ways to measure how well time-to-event predictions work.

Skill for Claude Code

Written for Claude Code: allowed-tools in frontmatter.

Part of the alterlab-data-science plugin — 22 skills shipped together

Good fit Use it to analyze censored study data, estimate survival curves, fit Cox and tree-based models, study competing risks, and evaluate predictions with measures such as the concordance index and Brier score.

Compare 6 skills from other repositories ↓
Install with agentmods
npx agentmods add skills/alterlab-ieu/alterlab-academic-skills/alterlab-scikit-survival
Install

Getting it into your agent

One page per mod, every tool's command on it. A separate URL per tool would split the same page into five that compete with each other.

Any agent
npx skills add AlterLab-IEU/AlterLab-Academic-Skills --skill alterlab-scikit-survival
Clone the repo
git clone --depth 1 https://github.com/AlterLab-IEU/AlterLab-Academic-Skills

Made for: Claude Code.

Or install alterlab-data-science, the plugin that ships this one along with the rest of its 22 skills.

Wrote this? Show the measurements

A badge with what this costs and how it scanned, read live from this page, so it follows the numbers instead of freezing them. Markdown for a README, HTML for a documentation site or a project page.

agentmods badge for alterlab-scikit-survival

README.md
[![agentmods](https://agentmods.dev/badge/skills/alterlab-ieu/alterlab-academic-skills/alterlab-scikit-survival/github.svg)](https://agentmods.dev/skills/alterlab-ieu/alterlab-academic-skills/alterlab-scikit-survival)
Your own site
<a href="https://agentmods.dev/skills/alterlab-ieu/alterlab-academic-skills/alterlab-scikit-survival"><img src="https://agentmods.dev/badge/skills/alterlab-ieu/alterlab-academic-skills/alterlab-scikit-survival/github.svg" alt="Measured on agentmods" height="20"></a>

Or the 80×15 button, for a site that already has a row of RSS and ATOM ones. Only the verdict fits; the numbers stay here.

agentmods 80×15 button for alterlab-scikit-survival

Your own site · 80×15
<a href="https://agentmods.dev/skills/alterlab-ieu/alterlab-academic-skills/alterlab-scikit-survival"><img src="https://agentmods.dev/badge/skills/alterlab-ieu/alterlab-academic-skills/alterlab-scikit-survival.svg" alt="Reviewed on agentmods" width="80" height="20"></a>
Per session 84 Skills are progressive disclosure: only the name and description are preloaded; the body loads when the skill is used.
When invoked 4,080 The whole file, excluding the scripts and references it only reads on demand.
Security scan A 0 findings. A grade says what 26 rules found in the file — not that it is safe.
Origin 94% copy Near-identical to another mod in the catalogue.
Token cost

What it costs to keep this loaded

Counted locally with the o200k_base tokenizer, which is exact for GPT models; Claude uses its own tokenizer and its counts differ. Treat this as one consistent yardstick across the catalogue rather than a bill. Prices are per million input tokens.

ModelPer sessionOnce invoked
Fable 5.1 $0.00084 $0.04080
Opus 5 $0.00042 $0.02040
Sonnet 5 $0.00017 $0.00816
Haiku 4.5 $0.00008 $0.00408

Measured 7d ago against content hash 37af00e81e65, method: parsed. Prices are Anthropic first-party input rates as of 2026-09-10, from the pricing page.

Security

Grade A, and why

alterlab-scikit-survival scanned grade A with 0 findings against 26 rules in 11 categories — prompt injection, anti-refusal, data exfiltration, privilege escalation, supply chain, agent snooping, system-prompt leakage, SSRF and excessive agency — measured 7d ago.

A static scan of the body, not an audit. Every finding is printed with the line that produced it so you can judge whether it matters here. A mod is markdown that instructs an agent; that is exactly why what it instructs is worth reading.

Nothing flagged

None of the 26 patterns this scan looks for appear in this file: no shell pipes, no recursive deletes, no credential paths, no hidden text, no instruction-override or anti-refusal phrasing, no agent-config snooping. That is not a guarantee, it is the absence of the things that are checkable.

Origin

This is a copy

94% identical to scikit-survival — 76 lines differ, which has more behind it and is treated as the original. This page carries a canonical link to it rather than competing with it.

skills/data-science/alterlab-scikit-survival/SKILL.md · 413 lines

How it starts

The opening of the file, as written. The whole thing — 413 lines — stays where its author put it; the contents beside it link to each section on GitHub.

scikit-survival: Survival Analysis in Python

Overview

scikit-survival is a Python library for survival analysis built on top of scikit-learn. It provides specialized tools for time-to-event analysis, handling the unique challenge of censored data where some observations are only partially known.

Survival analysis aims to establish connections between covariates and the time of an event, accounting for censored records (particularly right-censored data from studies where participants don't experience events during observation periods).

When to Use This Skill

Use this skill when:

  • Performing survival analysis or time-to-event modeling
  • Working with censored data (right-censored, left-censored, or interval-censored)
  • Fitting Cox proportional hazards models (standard or penalized)
  • Building ensemble survival models (Random Survival Forests, Gradient Boosting)
  • Training Survival Support Vector Machines
  • Evaluating survival model performance (concordance index, Brier score, time-dependent AUC)
  • Estimating Kaplan-Meier or Nelson-Aalen curves
  • Analyzing competing risks
  • Preprocessing survival data or handling missing values in survival datasets
  • Conducting any analysis using the scikit-survival library

Core Capabilities

1. Model Types and Selection

scikit-survival provides multiple model families, each suited for different scenarios:

Cox Proportional Hazards Models

Use for: Standard survival analysis with interpretable coefficients

  • CoxPHSurvivalAnalysis: Basic Cox model
  • CoxnetSurvivalAnalysis: Penalized Cox with elastic net for high-dimensional data
  • IPCRidge: Ridge regression for accelerated failure time models

See: references/cox-models.md for detailed guidance on Cox models, regularization, and interpretation

Ensemble Methods

Use for: High predictive performance with complex non-linear relationships

  • RandomSurvivalForest: Robust, non-parametric ensemble method
  • GradientBoostingSurvivalAnalysis: Tree-based boosting for maximum performance
  • ComponentwiseGradientBoostingSurvivalAnalysis: Linear boosting with feature selection
  • ExtraSurvivalTrees: Extremely randomized trees for additional regularization

Read the full file on GitHub · 413 lines

Files

What ships with it

7 files beside SKILL.md in the same directory: the scripts, references and assets a skill reads on demand. Not counted in the per-session cost; read them before you install if any of them is executable.

Changes

What this file has done since we first saw it

Hashed on every crawl. A supply-chain change to an agent config is a question of when, not whether, so the history is kept rather than the latest state alone.

  1. 7d ago First seen · 413 lines · 84 tokens per session scan A 37af00e81e65

Subscribe to this mod's changes

alterlab-scikit-survival is a skill published in the GitHub repository AlterLab-IEU/AlterLab-Academic-Skills (66 stars, last pushed 5d ago), licensed MIT. It adds 84 tokens to every session and 4,080 once invoked, about $0.0004 per session on Opus 5. A static security scan graded it A with 0 findings. It is 94% identical to scikit-survival, differing in 76 lines, and is treated as a copy.

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