Turkish Sentiment Analysis (3-class) — Fine-tuned TyRoberta

Overview

This model is a fine-tuned version of VRLLab_TurkishBERTweet_finetuned_optuna_turkish_sentiment for 3-class Turkish sentiment analysis. It was trained on an imbalanced dataset of e-commerce product reviews, and hyperparameters were optimized with Optuna to obtain the most effective fine-tuning configuration.

Bu model, üç sınıflı Türkçe duygu analizi için VRLLab_TurkishBERTweet_finetuned_optuna_turkish_sentiment taban alınarak ince ayar (fine-tuning) yapılmış bir sürümdür. Model, dengesiz bir e-ticaret ürün yorumları veri kümesi üzerinde eğitilmiş; en etkili ince ayar yapılandırmasını elde etmek için hiperparametreler Optuna ile optimize edilmiştir.

Intended Use

Product reviews classification
Social media analysis
Customer feedback analysis
Brand monitoring
Market research
Customer service optimization
Competitive intelligence

Model Details

Field	Value
Model Name	msamilim/VRLLab_TurkishBERTweet_finetuned_optuna_turkish_sentiment_v02
Base Model	VRLLab_TurkishBERTweet_finetuned_optuna_turkish_sentiment
Task	Sentiment Analysis
Language	Turkish
Fine-Tuning Dataset	Turkish E-Commerce Product Reviews Dataset
Number of Labels	3
Problem Type	Single-label classification
License	apache-2.0
Fine-Tuning Framework	Hugging Face Transformers

Dataset

The dataset is a Turkish three-class sentiment corpus (negatif / notr / pozitif). Overall distribution and per-split distributions are shown below.

Dataset Distribution (Overall)

LabelID	LabelName	Count	Ratio (%)
0	negatif	9462	18.86
1	notr	746	1.49
2	pozitif	39952	79.65
—	Total	50160	100.00

Training Procedure

Objective metric: eval_macro_f1
Hyperparameter Optimization Techniques: Optuna

HPO Parameter Ranges

params = {
        "learning_rate": trial.suggest_float("learning_rate", 5e-6, 5e-5, log=True),
        "per_device_train_batch_size": trial.suggest_categorical("per_device_train_batch_size", [16, 32]),
        "per_device_eval_batch_size":  trial.suggest_categorical("per_device_eval_batch_size",  [32]),
        "weight_decay": trial.suggest_float("weight_decay", 0.0, 0.1),
        "warmup_ratio": trial.suggest_float("warmup_ratio", 0.0, 0.2),
        "num_train_epochs": trial.suggest_int("num_train_epochs", 6, 8),
        "gradient_accumulation_steps": trial.suggest_categorical("gradient_accumulation_steps", [1, 2, 4]),
    }

Best Trial Hyperparameters

{
  "gradient_accumulation_steps": 1.0,
  "learning_rate": 9.52810812981246e-06,
  "num_train_epochs": 7.0,
  "per_device_eval_batch_size": 32.0,
  "per_device_train_batch_size": 16.0,
  "warmup_ratio": 0.0898355081163283,
  "weight_decay": 0.0718262528732965
}

Evaluation Results

Metric	Value
accuracy	0.9103
loss	0.7386
macro_f1	0.6014
runtime	2.5064
samples_per_second	1396.4400
steps_per_second	43.8880

Epoch-wise Metrics

epoch	train_loss	eval_accuracy	eval_loss	eval_macro_f1	eval_runtime	eval_samples_per_second	eval_steps_per_second
1	0.1104	0.9134	0.4424	0.6352	2.9387	1190.9840	37.4310
2	0.1107	0.9194	0.4984	0.6302	2.5437	1375.9330	43.2440
3	0.0813	0.9094	0.5466	0.6285	2.5496	1372.7590	43.1440
4	0.0498	0.9129	0.6645	0.6118	2.4822	1410.0340	44.3150
5	0.0278	0.9129	0.6938	0.5979	2.4873	1407.1440	44.2250
6	0.0202	0.9103	0.7386	0.6014	2.5064	1396.4400	43.8880

How to use - Pipeline

from transformers import pipeline

# Load the classification pipeline with the specified model
model_name = "msamilim/VRLLab_TurkishBERTweet_finetuned_optuna_turkish_sentiment_v02"
pipe = pipeline("text-classification", model=model_name)

# Classify a new sentence
sentence = "Güzel ürün, tavsiye ederim."
result = pipe(sentence)

# Print the result
print(result)

# Example output : 
# [{'label': 'pozitif', 'score': 0.9998408555984497}]

How to use - Full Classification

from transformers import AutoTokenizer, AutoModelForSequenceClassification
import torch

model_name = "msamilim/VRLLab_TurkishBERTweet_finetuned_optuna_turkish_sentiment_v02"
tokenizer = AutoTokenizer.from_pretrained(model_name)
model = AutoModelForSequenceClassification.from_pretrained(model_name)

def predict_sentiment(texts):
    inputs = tokenizer(texts, return_tensors="pt", truncation=True, padding=True, max_length=512)
    with torch.no_grad():
        outputs = model(**inputs)
    probabilities = torch.nn.functional.softmax(outputs.logits, dim=-1)
    id2label = {    0: "Negatif",    1: "Nötr",    2: "Pozitif"}
    return [id2label[p] for p in torch.argmax(probabilities, dim=-1).tolist()]

texts = [
     "Güzel ürün, tavsiye ederim kullanılır.", 
     "Ürün çok güzel ve kaliteli. Maalesef yüzüme uymadığı için iade etmek zorunda kaldım.", 
     "Keşke aldıktan sonra indirime girmeseydi.",
     "Daha soluk ve mat yapısı var beğenmedim .",
]

for text, sentiment in zip(texts, predict_sentiment(texts)):
    print(f"Text: {text}\nSentiment: {sentiment}\n")

# Example output : 
# Text: Güzel ürün, tavsiye ederim kullanılır.
# Sentiment: Pozitif
# Text: Ürün çok güzel ve kaliteli. Maalesef yüzüme uymadığı için iade etmek zorunda kaldım.
# Sentiment: Pozitif
# Text: Keşke aldıktan sonra indirime girmeseydi.
# Sentiment: Negatif
# Text: Daha soluk ve mat yapısı var beğenmedim .
# Sentiment: Negatif

Framework versions

transformers==4.57.0
torch==2.8.0+cu128
datasets==4.2.0
accelerate==1.10.1
evaluate==0.4.6
python==3.11.13

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Safetensors

Model size

163M params

Tensor type

F32