This paper presents the system that we have developed while solving this shared task on violence inciting text detection in Bangla. We explain both the traditional and the recent approaches that we have used to make our models learn. Our proposed system helps to classify if the given text contains any threat. We studied the impact of data augmentation when there is a limited dataset available. Our quantitative results show that finetuning a multilingual-e5-base model performed the best in our task compared to other transformer-based architectures. We obtained a macro F1 of 68.11% in the test set and our performance in this shared task is ranked at 23 in the leaderboard.

Bangla is the 7th most widely spoken language globally, with a staggering 234 million native speakers primarily hailing from India and Bangladesh. This morphologically rich language boasts a rich literary tradition, encompassing diverse dialects and language-specific challenges. Despite its linguistic richness and history, Bangla remains categorized as a low-resource language within the natural language processing (NLP) and speech community. This paper presents our submission to Task 2 (Sentiment Analysis of Bangla Social Media Posts) of the BLP Workshop. We experimented with various Transformer-based architectures to solve this task. Our quantitative results show that transfer learning really helps in better learning of the models in this low-resource language scenario. This becomes evident when we further finetuned a model that had already been finetuned on Twitter data for sentiment analysis task and that finetuned model performed the best among all other models. We also performed a detailed error analysis where we found some instances where ground truth labels need to be looked at. We obtained a micro-F1 of 67.02% on the test set and our performance in this shared task is ranked at 21 in the leaderboard.

Most transformer models are trained on English language corpus that contain text from forums like Wikipedia and Reddit. While these models are being used in many specialized domains such as scientific peer review, legal, and healthcare, their performance is subpar because they do not contain the information present in data relevant to such specialized domains. To help these models perform as well as possible on specialized domains, one of the approaches is to collect labeled data of that particular domain and fine-tune the transformer model of choice on such data. While a good approach, it suffers from the challenge of collecting a lot of labeled data which requires significant manual effort. Another way is to use unlabeled domain-specific data to pre-train these transformer model and then fine-tune this model on labeled data. We evaluate how transformer models perform when fine-tuned on labeled data after initial pre-training with unlabeled data. We compare their performance with a transformer model fine-tuned on labeled data without initial pre-training with unlabeled data. We perform this comparison on a dataset of Scientific Peer Reviews provided by organizers of PragTag-2023 Shared Task and observe that a transformer model fine-tuned on labeled data after initial pre-training on unlabeled data using Masked Language Modelling outperforms a transformer model fine-tuned only on labeled data without initial pre-training with unlabeled data using Masked Language Modelling.

Credit risk management is one central practice for financial institutions, and such practice helps them measure and understand the inherent risk within their portfolios. Historically, firms relied on the assessment of default probabilities and used the press as one tool to gather insights on the latest credit event developments of an entity. However, due to the deluge of the current news coverage for companies, analyzing news manually by financial experts is considered a highly laborious task. To this end, we propose a novel deep learning-powered approach to automate news analysis and credit adverse events detection to score the credit sentiment associated with a company. This paper showcases a complete system that leverages news extraction and data enrichment with targeted sentiment entity recognition to detect companies and text classification to identify credit events. We developed a custom scoring mechanism to provide the company’s credit sentiment score (CSS^TM) based on these detected events. Additionally, using case studies, we illustrate how this score helps understand the company’s credit profile and discriminates between defaulters and non-defaulters.