43-wentorai-research-plugins-skills-literature-metadata-h-index-guide

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SKILL.md

H-Index and Research Impact Metrics Guide

Understand, calculate, and responsibly interpret bibliometric indicators including h-index, impact factor, and related metrics.

Core Bibliometric Indicators

H-Index

The h-index (Hirsch index) is defined as: a researcher has an h-index of h if h of their papers have each been cited at least h times.

Example: If a researcher has published 20 papers with citation counts [120, 80, 55, 40, 22, 18, 15, 12, 10, 8, 5, 3, 2, 2, 1, 1, 0, 0, 0, 0], their h-index is 10 (10 papers with at least 10 citations each).

def calculate_h_index(citation_counts):
    """Calculate h-index from a list of citation counts."""
    sorted_counts = sorted(citation_counts, reverse=True)
    h = 0
    for i, count in enumerate(sorted_counts):
        if count >= i + 1:
            h = i + 1
        else:
            break
    return h

# Example
citations = [120, 80, 55, 40, 22, 18, 15, 12, 10, 8, 5, 3, 2, 2, 1, 1, 0, 0, 0, 0]
print(f"h-index: {calculate_h_index(citations)}")  # Output: 10

Related Author-Level Metrics

Metric	Definition	Advantage
h-index	h papers with >= h citations	Simple, robust to outliers
i10-index	Number of papers with >= 10 citations	Intuitive threshold (Google Scholar uses this)
g-index	Largest g such that top g papers have >= g^2 total citations	Rewards highly cited papers more
m-quotient	h-index divided by years since first publication	Normalizes for career length
hI-norm	h-index divided by average number of co-authors	Adjusts for team size

def calculate_g_index(citation_counts):
    """Calculate g-index from citation counts."""
    sorted_counts = sorted(citation_counts, reverse=True)
    cumulative = 0
    g = 0
    for i, count in enumerate(sorted_counts):
        cumulative += count
        if cumulative >= (i + 1) ** 2:
            g = i + 1
    return g

def calculate_i10_index(citation_counts):
    """Calculate i10-index."""
    return sum(1 for c in citation_counts if c >= 10)

print(f"g-index: {calculate_g_index(citations)}")    # Output: 19
print(f"i10-index: {calculate_i10_index(citations)}") # Output: 10

JIF(Y) = (Citations in Y to articles published in Y-1 and Y-2)
         / (Number of citable items published in Y-1 and Y-2)

Metric	Provider	Window	Notable Features
Impact Factor	Clarivate (JCR)	2-year or 5-year	Gold standard, subscription only
CiteScore	Scopus (Elsevier)	4-year	Free, includes all document types
SJR (Scimago)	Scopus data	3-year	Weights citations by journal prestige (PageRank-like)
SNIP	Scopus data	3-year	Normalizes for citation potential of each field
h5-index	Google Scholar	5-year	Free, h-index applied to a journal

import requests

# Using the OpenAlex API to get journal/source information
journal_name = "Nature"
response = requests.get(
    "https://api.openalex.org/sources",
    params={"filter": f"display_name.search:{journal_name}", "per_page": 5}
)
results = response.json()["results"]
for source in results:
    print(f"Name: {source['display_name']}")
    print(f"  ISSN: {source.get('issn_l', 'N/A')}")
    print(f"  Works count: {source.get('works_count', 'N/A')}")
    print(f"  Cited by count: {source.get('cited_by_count', 'N/A')}")
    print(f"  h-index: {source.get('summary_stats', {}).get('h_index', 'N/A')}")
    print(f"  2-year mean citedness: {source.get('summary_stats', {}).get('2yr_mean_citedness', 'N/A')}")

# OpenAlex provides h-index directly in author profiles
author_name = "Geoffrey Hinton"
response = requests.get(
    "https://api.openalex.org/authors",
    params={"filter": f"display_name.search:{author_name}", "per_page": 1}
)
author = response.json()["results"][0]
print(f"h-index: {author['summary_stats']['h_index']}")
print(f"i10-index: {author['summary_stats']['i10_index']}")
print(f"2-year mean citedness: {author['summary_stats']['2yr_mean_citedness']}")

43-wentorai-research-plugins-skills-literature-metadata-h-index-guide

Summary

SKILL.md

H-Index and Research Impact Metrics Guide

Core Bibliometric Indicators

H-Index

Related Author-Level Metrics

Journal-Level Metrics

Journal Impact Factor (JIF)

Looking Up Journal Metrics

Calculating Your Own H-Index

From Google Scholar

From OpenAlex

Responsible Use of Metrics

Known Limitations

DORA Declaration

Best Practices for Reporting

Related skills