Janak Kapuriya


2026

Recent advancements in text-to-image generative models have improved narrative consistency in story visualization. However, current story visualization models often overlook cultural dimensions, resulting in visuals that lack cultural fidelity. In this study, we present a progressive evaluation framework for story visualization. We validate this framework on current text-to-image models across three languages (English, Hindi, and Chinese) on two datasets (VIST and FlintstonesSV). The proposed framework introduces three levels of cultural analysis as evaluation rubrics: 1) Basic Cultural Criteria, 2) Cultural Dimension Guidance, and 3) Cultural Examples Grounding. We evaluate story visualization by use of a novel MLLM-as-Jury approach across all three rubrics and a small-scale human evaluation only on the third rubric. We implement an MLLM-as-jury approach by aggregating scores from three different families of MLLM-as-Judge models. In our experiments, real-world stories generally receive higher cultural appropriateness scores than animated ones, with English tending to score higher than Hindi and Chinese across the evaluated models. Some examples also exhibited culturally inconsistent or stereotypical elements noted by annotators. The proposed progressive evaluation framework has therefore been shown to provide early insights into cultural misalignments in story visualization. Code for this work is made available on https://github.com/janak11111/Cultural_Eval_For_StoryViz

2024

Food touches our lives through various endeavors, including flavor, nourishment, health, and sustainability. Recipes are cultural capsules transmitted across generations via unstructured text. Automated protocols for recognizing named entities, the building blocks of recipe text, are of immense value for various applications ranging from information extraction to novel recipe generation. Named entity recognition is a technique for extracting information from unstructured or semi-structured data with known labels. Starting with manually-annotated data of 6,611 ingredient phrases, we created an augmented dataset of 26,445 phrases cumulatively. Simultaneously, we systematically cleaned and analyzed ingredient phrases from RecipeDB, the gold-standard recipe data repository, and annotated them using the Stanford NER. Based on the analysis, we sampled a subset of 88,526 phrases using a clustering-based approach while preserving the diversity to create the machine-annotated dataset. A thorough investigation of NER approaches on these three datasets involving statistical, fine-tuning of deep learning-based language models and few-shot prompting on large language models (LLMs) provides deep insights. We conclude that few-shot prompting on LLMs has abysmal performance, whereas the fine-tuned spaCy-transformer emerges as the best model with macro-F1 scores of 95.9%, 96.04%, and 95.71% for the manually-annotated, augmented, and machine-annotated datasets, respectively.