from transformers import AutoTokenizer, T5ForConditionalGeneration

model_name = "IlyaGusev/rut5_base_sum_gazeta"
tokenizer = AutoTokenizer.from_pretrained(model_name)
model = T5ForConditionalGeneration.from_pretrained(model_name)

article_text = "..."

input_ids = tokenizer(
    [article_text],
    max_length=600,
    add_special_tokens=True,
    padding="max_length",
    truncation=True,
    return_tensors="pt"
)["input_ids"]

output_ids = model.generate(
    input_ids=input_ids,
    no_repeat_ngram_size=4
)[0]

summary = tokenizer.decode(output_ids, skip_special_tokens=True)
print(summary)

Training data

Dataset: Gazeta

Training procedure

Training script: train.py
Config: t5_training_config.json

Eval results

Train dataset: Gazeta v1 train
Test dataset: Gazeta v1 test
Source max_length: 600
Target max_length: 200
no_repeat_ngram_size: 4
num_beams: 5

Model	R-1-f	R-2-f	R-L-f	chrF	METEOR	BLEU	Avg char length
mbart_ru_sum_gazeta	32.4	14.3	28.0	39.7	26.4	12.1	371
rut5_base_sum_gazeta	32.2	14.4	28.1	39.8	25.7	12.3	330
rugpt3medium_sum_gazeta	26.2	7.7	21.7	33.8	18.2	4.3	244

Train dataset: Gazeta v1 train
Test dataset: Gazeta v2 test
Source max_length: 600
Target max_length: 200
no_repeat_ngram_size: 4
num_beams: 5

Model	R-1-f	R-2-f	R-L-f	chrF	METEOR	BLEU	Avg char length
mbart_ru_sum_gazeta	28.7	11.1	24.4	37.3	22.7	9.4	373
rut5_base_sum_gazeta	28.6	11.1	24.5	37.2	22.0	9.4	331
rugpt3medium_sum_gazeta	24.1	6.5	19.8	32.1	16.3	3.6	242

Predicting all summaries:

python

import json
import torch
from transformers import AutoTokenizer, T5ForConditionalGeneration
from datasets import load_dataset


def gen_batch(inputs, batch_size):
    batch_start = 0
    while batch_start < len(inputs):
        yield inputs[batch_start: batch_start + batch_size]
        batch_start += batch_size


def predict(
    model_name,
    input_records,
    output_file,
    max_source_tokens_count=600,
    batch_size=8
):
    device = "cuda" if torch.cuda.is_available() else "cpu"

    tokenizer = AutoTokenizer.from_pretrained(model_name)
    model = T5ForConditionalGeneration.from_pretrained(model_name).to(device)
    
    predictions = []
    for batch in gen_batch(input_records, batch_size):
        texts = [r["text"] for r in batch]
        input_ids = tokenizer(
            texts,                                                                                                     
            add_special_tokens=True,
            max_length=max_source_tokens_count,
            padding="max_length",
            truncation=True,
            return_tensors="pt"
        )["input_ids"].to(device)
        
        output_ids = model.generate(
            input_ids=input_ids,
            no_repeat_ngram_size=4
        )
        summaries = tokenizer.batch_decode(output_ids, skip_special_tokens=True)
        for s in summaries:
            print(s)
        predictions.extend(summaries)
    with open(output_file, "w") as w:
        for p in predictions:
            w.write(p.strip().replace("\n", " ") + "\n")

gazeta_test = load_dataset('IlyaGusev/gazeta', script_version="v1.0")["test"]
predict("IlyaGusev/rut5_base_sum_gazeta", list(gazeta_test), "t5_predictions.txt")

Evaluation script: evaluate.py

Flags: --language ru --tokenize-after --lower