StarryData Dataset Documentation

Overview

The StarryData dataset is a comprehensive database containing experimental data extracted from scientific papers on thermoelectric materials. This dataset consists of three main CSV files containing paper information, material samples, and property measurement data.

Dataset Statistics

• Total records: 370,404
• Papers: 46,088
• Samples: 121,641
• Measurement curves: 202,673

File Structure

1. starrydata_curves.csv (Measurement Data)

Number of records: 202,673 File size: ~25MB

Note: The dataset includes only the latest version of each measurement curve. When multiple versions exist for the same figure_id and sample_id combination due to data corrections or updates, only the most recent version (based on updated_at timestamp) is included in the exported dataset.

Schema Definition

Data Example

SID,DOI,composition,sample_id,figure_id,prop_x,prop_y,unit_x,unit_y,x,y,...
6,"10.1021/am405410e","Pb1.00025Zn0.02Te1.02I0.0005",113,79,"Temperature","Seebeck coefficient","K","V*K^(-1)","[299.8597,324.8683,...]","[-0.0001484452,-0.0001602763,...]",...

2. starrydata_samples.csv (Sample Information)

Number of records: 121,641 File size: ~20MB

Schema Definition

sample_info Field Structure

{
  "Form": {"category": "Bulk", "comment": ""},
  "FabricationProcess": {"category": "Melting", "comment": "Detailed fabrication process"},
  "DataType": {"category": "Experiment", "comment": ""},
  "ThermalMeasurement": {"category": "LaserFlash+DSC", "comment": ""},
  "ElectricalMeasurement": {"category": "SteadyState+4P", "comment": ""},
  "MaterialFamily": {"category": "PbTe", "comment": ""},
  "RelativeDensity": {"category": ">=90%", "comment": ""},
  "GrainSize": {"category": "", "comment": ""},
  "Purity": {"category": "SinglePhase", "comment": ""}
}

3. starrydata_papers.csv (Paper Information)

Number of records: 46,088 File size: ~15MB

Schema Definition

Supported Properties

The dataset includes various thermoelectric and material properties:

Common Properties

• Temperature
• Seebeck coefficient
• Electrical resistivity / conductivity
• Thermal conductivity
• Power factor
• ZT (figure of merit)
• Carrier mobility
• Hall coefficient
• Magnetic field / Magnetization
• Battery properties (C rate, Cycle number, Voltage, Discharge/Charge capacity)

Data Completeness Summary

Overall Completeness

• Required fields: 100% (all primary keys and timestamps)
• Metadata fields: >90% (most paper information)
• Optional fields: Variable (comments, detailed information)

File-specific Completeness

1. starrydata_curves.csv: Average completeness 92.8%

   • 99.9% excluding comment fields

2. starrydata_samples.csv: Average completeness 93.2%

   • 99.0% excluding composition_details

3. starrydata_papers.csv: Average completeness 97.5%
   • All important fields have >90% completeness

Data Quality Features

1. Data integrity: Complete referential integrity between files via SID, DOI, and sample_id
2. Measurement data completeness: All measurement data (x, y arrays) 100% present
3. Rich metadata: Paper information includes detailed bibliographic data
4. Structured information: sample_info field records detailed experimental conditions in JSON format

Download

The complete dataset can be downloaded from the Starrydata2 Web System.

Dataset Files

• starrydata_curves.csv - Measurement data (202,673 records)
• starrydata_samples.csv - Sample information (121,641 records)
• starrydata_papers.csv - Paper metadata (46,088 records)

Additional Resources

• Starrydata2 Web System - Access the latest data and tools
• API Documentation - Programmatic access to the data

← Back to Datasets