Data Sources

This guide explains where the data used by Atlas Verify comes from and how it is combined.

Why Multiple Sources?

No bibliographic database is complete. Each source has its strengths and limitations:

Source	Strengths	Limitations
OpenAlex	Very comprehensive (240M+ publications), free	Sometimes imprecise affiliations
ORCID	Data entered by researchers themselves	Depends on what you have provided
HAL	Reference for French research	Primarily France
Crossref	Official DOIs, publisher metadata	No author identifiers
ArXiv	Recent preprints	Exact sciences only

By combining these sources, Atlas Verify builds a more complete and reliable profile.

Sources in Detail

OpenAlex

What it is: An open database from Microsoft Research containing over 240 million scientific publications.

What it provides:

• Your publications with their metadata
• Your automatically detected affiliations
• Your research domains (Topics)
• Your citation metrics

Reliability: ⭐⭐⭐⭐ (very good for publications, variable for affiliations)

OpenAlex automatically assigns an identifier to each detected researcher. If you have an ORCID, it is linked to this identifier.

ORCID

What it is: An international registry of unique identifiers for researchers, managed by a non-profit organization.

What it provides:

• Your publications that you have declared
• Your professional career
• Your education
• Your funding

Reliability: ⭐⭐⭐⭐⭐ (data you have validated yourself)

Tip: Create and maintain your ORCID profile. It's free and significantly improves the reliability of your Atlas Verify profile.

HAL (Hyper Articles en Ligne)

What it is: A French open archive managed by CNRS, Inria, and other institutions.

What it provides:

• Your publications deposited in France
• Standardized French research structures
• Full text often available

Reliability: ⭐⭐⭐⭐ (excellent for French authors)

If you are a researcher in France, depositing your articles on HAL improves your visibility and the quality of your profile.

Crossref

What it is: The official registry of DOIs (Digital Object Identifiers), managed by scientific publishers.

What it provides:

• Official publication metadata
• Citation links between articles
• Funding information

Reliability: ⭐⭐⭐⭐⭐ (official data from publishers)

Crossref does not contain author identifiers (no systematic ORCID), which makes attribution more difficult.

ArXiv

What it is: A preprint server for exact sciences (physics, mathematics, computer science...).

What it provides:

• Your preprints before official publication
• Successive versions of your work
• Full text

Reliability: ⭐⭐⭐ (good but limited to exact sciences)

How Sources Are Combined

Fusion Principle

Atlas Verify doesn't just add up sources. It intelligently cross-references them:

┌─────────────────────────────────────────────────────────┐
│                    YOUR PROFILE                         │
├─────────────────────────────────────────────────────────┤
│                                                         │
│   OpenAlex    ORCID     HAL      Crossref    ArXiv     │
│      │          │        │          │          │        │
│      └──────────┼────────┼──────────┼──────────┘        │
│                 │        │          │                   │
│                 ▼        ▼          ▼                   │
│           ┌─────────────────────────────┐               │
│           │   Fusion algorithm          │               │
│           │   - Deduplication           │               │
│           │   - Conflict resolution     │               │
│           │   - Confidence score        │               │
│           └─────────────────────────────┘               │
│                         │                               │
│                         ▼                               │
│              Unified and reliable profile               │
│                                                         │
└─────────────────────────────────────────────────────────┘

Deduplication

The same article may appear in multiple sources:

• ArXiv version (preprint)
• Publisher version (via Crossref)
• HAL deposit (open archive)
• ORCID declaration (by you)
• OpenAlex indexing (automatic)

Atlas Verify identifies that it's the same article using the DOI and merges them into a single entry.

Conflict Resolution

When sources contradict each other, the system applies priority rules:

Information	Priority source	Reason
Your personal data	ORCID	You entered it
Publication date	Crossref/DOI	Official data
Affiliation at time of publication	HAL > OpenAlex	More reliable
Research domains	OpenAlex	Better coverage
Full text	HAL > ArXiv	Open access

Confidence Score

Each piece of information receives a score based on:

• Number of concordant sources
• Reliability of each source for this type of information
• Consistency with your other data

What to Do If a Source Is Incorrect?

Misattributed Publication

If a publication from a source isn't yours:

1. Go to Verify your publications
2. Find the concerned publication
3. Click on Reject
4. Indicate the reason (homonym, database error...)

Incorrect Affiliation

If a source indicates a wrong affiliation:

1. Go to Manage your career
2. Correct or delete the erroneous affiliation
3. Your correction will take priority

Missing Information

If a publication or affiliation doesn't appear:

• Check that it is indeed in the source databases
• Add it manually if necessary
• Or update your ORCID profile (recommended)

Data Freshness

Source	Update frequency	Propagation delay
OpenAlex	Daily	1-7 days
ORCID	Real-time	Immediate
HAL	Daily	1-2 days
Crossref	Continuous	1-30 days
ArXiv	Daily	1-2 days

After a new publication, expect approximately 1 to 2 weeks before it automatically appears in your profile.

See Also

• Verify your publications - Validate the data
• Manage your career - Correct affiliations
• Expertise profile - Based on these sources

Technical documentation: Source catalog - For developers