---
license: cc-by-4.0
task_categories:
- text-classification
task_ids:
- multi-class-classification
language:
- ja
multilinguality:
- monolingual
size_categories:
- n<1K
pretty_name: HaikuSeasonClassification
tags:
- poetry
- japanese
- haiku
- season-classification
- kigo
- mteb
- poetrymteb
- embedding-evaluation
annotations_creators:
- expert-generated
source_datasets:
- shigr3/haiku
configs:
- config_name: default
  data_files:
  - split: train
    path: data/train-*
  - split: test
    path: data/test-*
  default: true
dataset_info:
- config_name: default
  features:
  - name: id
    dtype: string
  - name: poem
    dtype: string
  - name: author
    dtype: string
  - name: season_word
    dtype: string
  - name: label
    dtype: int64
  - name: label_name
    dtype: string
  splits:
  - name: train
    num_examples: 113
  - name: test
    num_examples: 29
---

# HaikuSeasonClassification

Single-label **Japanese haiku season classification** (春/夏/秋/冬) for PoetryMTEB, derived from [shigr3/haiku](https://huggingface.co/datasets/shigr3/haiku).

## Dataset Card

| Item | Description |
|------|-------------|
| **Source** | [shigr3/haiku](https://huggingface.co/datasets/shigr3/haiku) |
| **Languages** | Japanese (`ja`) |
| **Unit** | Haiku text (`poem`) |
| **Classes** | 4 seasons |
| **Size** | train=113; test=29 |
| **Splits** | Stratified by season ≈ 80% / 20%, seed=42 |
| **License** | [CC BY 4.0](https://creativecommons.org/licenses/by/4.0/) (same as upstream) |
| **Evaluation metrics** | Classification on embeddings: **accuracy**, **macro/weighted F1** |

## Label taxonomy (4)

| id | label_name | English | romanization | train | test | total |
|---:|------------|---------|--------------|------:|-----:|------:|
| 0 | `春` | Spring | haru | 28 | 7 | 35 |
| 1 | `夏` | Summer | natsu | 30 | 8 | 38 |
| 2 | `秋` | Autumn | aki | 27 | 7 | 34 |
| 3 | `冬` | Winter | fuyu | 28 | 7 | 35 |

## Features

| Field | Type | Description |
|-------|------|-------------|
| `id` | string | Example id |
| `poem` | string | Haiku body |
| `author` | string | Poet |
| `season_word` | string | Kigo (季語); metadata, not the classification target |
| `label` | int64 | Season class 0–3 |
| `label_name` | string | `春` / `夏` / `秋` / `冬` |

## Attribution

Dataset: Famous Japanese Haiku Dataset — author **shigr3** — https://huggingface.co/datasets/shigr3/haiku