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Your model was fine.
Your data wasn't.

Upload your dataset. DataForge audits it in under 2 seconds — scoring quality 0–100 and surfacing the exact issues that will break your training run before you waste a single GPU hour.

No signup required · Runs in your browser · Your data never leaves your machine

audit.log — job_salary_prediction_dataset.csv

$ dataforge audit job_salary_prediction_dataset.csv

→ Parsing 250,000 rows × 10 columns...

→ Running quality checks + agentic analysis...

✗ experience_years ↔ salary: correlation 0.85 (potential leakage)

⚠ education_level: outliers detected — ['PhD', 'Master's'] z-score > 2

⚠ industry: frequency imbalance — ['Technology', 'Finance'] > 10%

✓ No exact duplicates

✓ No missing values

Quality Score: 80/100 (Grade B)

Completed in 1.2s · 250k rows processed

The problem that looks like a model problem

The model wasn't broken.
The data was.

You spent 6 hours debugging a training run.

It was a class imbalance in a column you never checked.

DataForge catches it in 2 seconds.

Epoch 1/50 — loss: 1.847 — val_acc: 0.521

Epoch 5/50 — loss: 1.841 — val_acc: 0.519

Epoch 20/50 — loss: 1.843 — val_acc: 0.521

Epoch 50/50 — loss: 1.847 — val_acc: 0.522

Training complete. Model accuracy: 52.2%

Root cause found 8 hours later: Class 0 comprised 97.4% of samples. Model learned to always predict 0 and called it accurate.
🟢DataForge flags this at upload. Before you queue a single training job.
The audit report

This is what appears in 2 seconds.

A quality score, ranked issues, and the exact training impact of each problem.

DataForge
Data PreviewVisualizationsQuality Audit
250,000 rows · 10 cols

Dataset Quality Audit

B
80/100
Quality Score
🔴 1 critical🟡 2 warnings🟢 3 ok
Strong correlation — potential leakageexperience_years

Correlation coefficient: 0.85 with target (salary). Model may memorize this relationship instead of generalizing.

boltConsider feature selection or target encoding.

Outliers in education_leveleducation_level

Values with z-score > 2: ['PhD', 'Master's'] — may indicate data entry inconsistency.

boltReview and standardize categorical values.

Frequency imbalance in industryindustry

['Technology', 'Finance'] account for > 10% each. Underrepresented categories may affect generalization.

boltConsider stratified sampling or oversampling.

Auto Visualizations

Salary vs Experience
Education Distribution
Bachelor's 40%
Master's 35%
PhD 25%

AI generates charts on upload. Ask for any visualization in the chat.

How it works

Upload. Audit. Know.

01

Upload

Drop a file. Parsed entirely in your browser using PapaParse. Nothing sent to a server — your data stays on your machine.

→ Handles up to 250k+ rows

02

Audit

Static checks + an agentic reasoning layer run in parallel. Duplicates, imbalance, correlations, outliers, missing values — detected automatically.

→ Completes in under 2 seconds

03

Know

Quality score 0–100, severity-ranked issue list, and a one-line training impact explanation for each problem. No ambiguity.

→ No more "why did training fail"

What it catches

Every issue that's killed a training run.

So you don't debug it at 2am.

⚖️

Class imbalance

🔴

Gini impurity on label/class/target columns. Exact majority:minority ratio.

Training impact: A 37x imbalance means your model predicts the majority class 97% of the time. Accuracy looks fine. Model is useless.

🔗

Feature-target correlation

🔴

Pearson correlation between numeric columns and likely target. Flags coefficients > 0.8.

Training impact: High correlation = potential data leakage. Model memorizes the shortcut instead of learning the pattern.

🧬

Exact duplicate rows

🔴

Full row hash via JSON.stringify. Zero approximation.

Training impact: Duplicates in train that appear in eval inflate metrics without reflecting real model capability.

👥

Near-duplicate rows

🟡

Pairwise column similarity ≥ 90% across sampled rows. Catches what exact matching misses.

Training impact: Synthetic and scraped datasets are full of these. They pad size without adding signal.

🕳️

Missing values

🟡

Catches null, undefined, "NA", "NaN", nan (string). Per-column % with severity tiers.

Training impact: 40%+ missing in a feature column makes it unusable. Silently imputed, it actively degrades predictions.

📊

Outliers

🟡

Z-score > 2 on numeric and categorical columns. Named outlier values surfaced.

Training impact: Outliers skew learned distributions and distort feature scaling. Often data entry errors in disguise.

👻

Empty string cells

🟡

Separate from null detection. Empty string "" is not null but breaks pipelines identically.

Training impact: Tokenizers and encoders treat "" as valid input. These are invisible missing values.

🔀

Type inconsistencies

🟡

Per-column numeric vs string ratio. Flags mostly-numeric columns with string outliers.

Training impact: One string in a numeric column forces pandas to cast the entire column to object. Silent pipeline break.

Privacy focused

Primary analysis happens in your browser.

Core parsing, analysis, and visualization happens locally via your browser's JavaScript engine. This ensures immediate feedback and a high degree of privacy for your datasets.

If you're working with sensitive research data or proprietary training sets, DataForge provides the localized speed and security you need for professional model development.

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Client-side processing
PapaParse runs in your browser tab. 250k rows processed locally in milliseconds.
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Data Privacy
Localized processing ensures your dataset content remains under your control.
speed
Instant Execution
No heavy cloud uploads required. Analysis starts the moment you drop the file.
Honest comparison

Why not just use pandas?

🐼

The pandas way

# You write this every time, for every dataset

df.isnull().sum()

df.duplicated().sum()

df['label'].value_counts()

df.corr()

# Still no quality score

# Still no training impact explanation

# Still 20 min per dataset

  • Write the script from scratch every time
  • No severity ranking — all output looks equal
  • No training impact context
  • No quality score to compare datasets
  • Requires Python, Jupyter, working environment

The DataForge way

# You: drop a CSV.

Quality Score: 80/100 (Grade B)

🔴 experience_years: correlation 0.85

🟡 education_level: outliers detected

🟢 No duplicates · No missing values

# Done. 1.2 seconds.

  • No code. Drop a file, get the report.
  • Issues ranked by training impact severity
  • Plain-language explanation for every issue
  • 0–100 score — compare datasets objectively
  • Runs in the browser. No Python, no setup.

Upload your first dataset.
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