ClaudSkills / Science & Research / research-methods

Ljg Paper River

Q: What is a Claude Code skill and how does the Ljg Paper River skill fit in?

A Claude Code skill is a SKILL.md file that lives under ~/.claude/skills/<name>/ and tells the Claude Code CLI agent how to perform a specific task (instructions, prompts, allowed tools). Skills are auto-discovered at session start. Ljg Paper River is one of 67,000+ skills indexed in the open ClaudSkills catalog, classified under the Science & Research category. Learn more at https://claudskills.com/learn/what-is-skill-md/.

Category: Science & Research · Sub-category: research-methods · Last updated: 2026-05-26

论文倒读法：给一篇论文，递归找出它批判和改进的前序论文（最多5层），再找它之后的最新进展，从源头正向讲述问题演化史。以问题为轴，费曼式讲解每篇论文看到的问题和解法创新。Use when user shares a paper and wants to understand its intellectual lineage, citation chain, problem evolution, or says '倒读', '论文溯源', '论文脉络', 'paper river', 'paper connects', 'trace back', '这篇论文的来龙去脉', '论文演化'. Also trigger when user wants to understand how a research problem evolved across multiple papers.

From the source SKILL.md

一篇论文不是孤岛。它站在前人的肩上，也踩着前人的伤疤。倒着挖到根，再正着看过来——问题怎么长出来的，每个人看到了什么别人没看到的，解法怎么一步步逼近真相。

What this skill does

Ljg Paper River is a community-contributed Claude Code skill in the research-methods sub-category. It ships as a SKILL.md file that Claude Code auto-discovers under ~/.claude/skills/ljg-paper-river/ and loads when your prompt matches the skill's trigger.

When to invoke it: Use when user shares a paper and wants to understand its intellectual lineage, citation chain, problem evolution, or says '倒读', '论文溯源', '论文脉络', 'paper river', 'paper connects', 'trace back', '这篇论文的来龙去脉', '论文演化'. Also trigger when user wants to understand how a research problem evolved across multiple papers.

Who uses this skill

The Ljg Paper River Claude Code skill is built for researchers, data scientists, academics, and analysts working with complex data and scientific literature. It's part of ClaudSkills (also referred to as Claude Skills or Claude Code Skills) — the open community-curated registry of 93,000+ SKILL.md files for Anthropic's Claude Code agent and the wider Claude ecosystem (Claude API, Claude Agent SDK).

How to install

Free

Manual install (2 steps)

mkdir -p ~/.claude/skills/ljg-paper-river
curl -L https://claudskills.com/skills/ljg-paper-river/SKILL.md \
  -o ~/.claude/skills/ljg-paper-river/SKILL.md

Or just download SKILL.md directly and drop it into ~/.claude/skills/ljg-paper-river/. Claude Code auto-discovers it on next session.

Skills live at ~/.claude/skills/ljg-paper-river/SKILL.md on macOS/Linux, or %USERPROFILE%\.claude\skills\ljg-paper-river\SKILL.md on Windows. See the full install guide for step-by-step instructions.

📱 Install from your phone or desktop Telegram

Open @claudskills_bot on Telegram, tap Open Desktop App, and the desktop app installs this skill for you. Or share the bot link with a colleague — they get the same one-tap install. Learn more →

Pro

One-click install via the desktop app

The ClaudSkills desktop app installs any skill directly into ~/.claude/skills/ with one click — no terminal required. Pro starts at $9/mo or $149 lifetime.

Pro

For the full experience including quality scoring and one-click install features for each skill — upgrade to Pro.

See pricing → Download desktop app

Frequently asked questions

How do I install the Ljg Paper River Claude Code skill?

Install via the ClaudSkills desktop app (one click) or copy SKILL.md from the source repository to ~/.claude/skills/ljg-paper-river/SKILL.md and restart Claude Code. Both flows are detailed at claudskills.com/install/.

What does the Ljg Paper River skill do?

Is this skill free to install?

Yes. ClaudSkills is an open registry — every skill keeps its source repository's license, and manual install via copy is free. ClaudSkills Pro ($9/mo, $79/yr, or $149 one-time) adds one-click install via the desktop app and a multi-signal Quality Score.

When should I use the Ljg Paper River skill?

Use Ljg Paper River when your Claude Code task falls under the Science & Research category — specifically in the research methods area. Claude Code auto-discovers installed skills and invokes the right one based on the task description, so you can also ask Claude directly (e.g. "use Ljg Paper River" or describe the task and let Claude pick). Browse related skills at /category/science/.

What is a Claude Code skill and how does the Ljg Paper River skill fit in?

A Claude Code skill is a SKILL.md file that lives under ~/.claude/skills/<name>/ and tells the Claude Code CLI agent how to perform a specific task (instructions, prompts, allowed tools). Skills are auto-discovered at session start. Ljg Paper River is one of 67,000+ skills indexed in the open ClaudSkills catalog, classified under the Science & Research category. Learn more at /learn/what-is-a-claude-skill/.

Attribution & license

Source: https://github.com/jianshuo/ljg-skills/blob/HEAD/skills/ljg-paper-river/SKILL.md
Author: jianshuo

Cite this skill

If you reference this skill in a blog post, paper, or documentation, you can cite it as:

APA

jianshuo. (2026). Ljg Paper River [Claude Code skill]. ClaudSkills. https://claudskills.com/skills/ljg-paper-river/

BibTeX

@misc{ljg-paper-river-2026,
  author    = {jianshuo},
  title     = {Ljg Paper River [Claude Code skill]},
  year      = {2026},
  publisher = {ClaudSkills},
  url       = {https://claudskills.com/skills/ljg-paper-river/}
}

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