This paper describes approaches and results for shared Task 1 and 4 of
SMMH4-23 by Team Shayona. Shared Task-1 was binary classification of english
tweets self-reporting a COVID-19 diagnosis, and Shared Task-4 was Binary
classification of English Reddit posts self-reporting a social anxiety disorder
diagnosis. Our team has achieved the highest f1-score 0.94 in Task-1 among all
participants. We have leveraged the Transformer model (BERT) in combination
with the LightGBM model for both tasks.

Expert Commentary: Leveraging Transformer Models for Binary Classification Tasks

In this article, we will discuss the approaches and results achieved by Team Shayona in the shared Task 1 and Task 4 of SMMH4-23. Task 1 involved the binary classification of English tweets that self-reported a COVID-19 diagnosis, while Task 4 focused on the binary classification of English Reddit posts that self-reported a social anxiety disorder diagnosis. Team Shayona successfully achieved the highest f1-score of 0.94 in Task 1 among all participants.

What makes Team Shayona’s achievement particularly noteworthy is their utilization of the Transformer model, specifically BERT (Bidirectional Encoder Representations from Transformers), in combination with the LightGBM model for both tasks. This approach showcases the multi-disciplinary nature of these concepts, as it combines techniques from both natural language processing (NLP) and machine learning domains.

BERT, a popular transformer-based model, has revolutionized many NLP tasks by capturing deep contextual information and overcoming the limitations of traditional word-level embeddings. By leveraging BERT, Team Shayona was able to extract rich semantic representations from the textual data, enabling them to better understand the nuanced language used in tweets and Reddit posts related to COVID-19 and social anxiety disorder.

Furthermore, by combining BERT with LightGBM, which is a gradient boosting framework, Team Shayona effectively incorporated both deep learning and ensemble learning techniques into their approach. This combination likely helped them overcome potential shortcomings of using BERT alone, such as computational costs and sensitivity to hyperparameters. LightGBM’s ability to handle large-scale datasets and its efficient training process likely contributed to the team’s excellent performance.

The success of Team Shayona highlights the importance of leveraging state-of-the-art models like BERT in conjunction with other powerful machine learning algorithms to achieve superior results in binary classification tasks. The ability to analyze and classify user-generated content related to COVID-19 and mental health disorders holds significant value in various domains, including healthcare, public health, and social sciences.

In future iterations of similar tasks, it would be interesting to see how Team Shayona’s approach can be further optimized. Exploring different transformer-based models, such as GPT-3 or RoBERTa, may offer additional insights into the data and potentially improve the classification performance. Additionally, fine-tuning the hyperparameters of BERT and LightGBM could lead to enhanced results, as these models often rely on careful parameter tuning for optimal performance.

In conclusion

Team Shayona’s achievement in the shared Task 1 and Task 4 of SMMH4-23 demonstrates the value of utilizing transformer models, like BERT, in combination with other machine learning approaches for binary classification tasks. This multi-disciplinary approach showcases the potential of combining NLP and machine learning techniques to gain deeper insights from textual data related to COVID-19 and mental health disorders. As the field progresses, further exploration of different transformer-based models and hyperparameter optimization will likely lead to even more impressive results.

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