999,847 personas, each described by 1,290 categorical attributes.
599,847 are derived from real records, 400,000 are synthetic.
10 Zstandard Parquet shards, 4.17 GB.
Read it with pyarrow, not datasets
Attributes are packed: one persona's 1,290 attributes are 645 bytes of 4-bit
codes, low nibble first. datasets cannot open these files at all. Use pyarrow
and decode against persona_codes.schema.json.
import json, pyarrow.parquet as pq
