# 11-785-Fall-20-Homework-1: Part 2 — Data

来源：https://www.kaggle.com/competitions/11-785-fall-20-homework-1-part-2/data

采集时间：2026-10-19T06:33:40Z

File descriptions
Data files are available for download from this page.
File descriptions
train.npy - training features
train_labels.npy - training labels
dev.npy - development/validation features
dev_labels.npy - development/validation labels
test.npy - test features
sample.csv - sample submission in correct format
phones.txt - distinct phonemes
Feature Files
[train|dev|test].npy contain a numpy object array of shape [utterances]. Each utterance is a float32 ndarray of shape [time, frequency], where time is the length of the utterance. Frequency dimension is always 13 but time dimension is of variable length.
Label Files
[train|dev]_labels.npy contain a numpy object array of shape [utterances]. Each element in the array is an int32 array of shape [time] and provides the phoneme state label for each frame. There are 346 distinct labels [0-345], one for each subphoneme.