Abstract
Detecting media bias is crucial, specifically in the South Asian region.
Despite this, annotated datasets and computational studies for Bangla political
bias research remain scarce. Crucially because, political stance detection in
Bangla news requires understanding of linguistic cues, cultural context, subtle
biases, rhetorical strategies, code-switching, implicit sentiment, and
socio-political background. To address this, we introduce the first benchmark
dataset of 200 politically significant and highly debated Bangla news articles,
labeled for government-leaning, government-critique, and neutral stances,
alongside diagnostic analyses for evaluating large language models (LLMs). Our
comprehensive evaluation of 28 proprietary and open-source LLMs shows strong
performance in detecting government-critique content (F1 up to 0.83) but
substantial difficulty with neutral articles (F1 as low as 0.00). Models also
tend to over-predict government-leaning stances, often misinterpreting
ambiguous narratives. This dataset and its associated diagnostics provide a
foundation for advancing stance detection in Bangla media research and offer
insights for improving LLM performance in low-resource languages.
Complexity Science Hub, 1
Abstract
We model bipartisan elections where voters are exposed to two forces: local
homophilic interactions and external influence from two political campaigns.
The model is mathematically equivalent to the random field Ising model with a
bimodal field. When both parties exceed a critical campaign spending, the
system undergoes a phase transition to a highly polarized state where
homophilic influence becomes negligible, and election outcomes mirror the
proportion of voters aligned with each campaign, independent of total spending.
The model predicts a hysteresis region, where the election results are not
determined by campaign spending but by incumbency. Calibrating the model with
historical data from US House elections between 1980 and 2020, we find the
critical campaign spending to be $\sim 1.8$ million USD. Campaigns exceeding
critical expenditures increased in 2018 and 2020, suggesting a boost in
political polarization.