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Transfer Learning Enhanced Single-choice Decision for Multi-choice Question Answering

Cui, Chenhao, Jiang, Yufan, Wu, Shuangzhi, Li, Zhoujun

arXiv.org Artificial Intelligence

Multi-choice Machine Reading Comprehension (MMRC) aims to select the correct answer from a set of options based on a given passage and question. The existing methods employ the pre-trained language model as the encoder, share and transfer knowledge through fine-tuning.These methods mainly focus on the design of exquisite mechanisms to effectively capture the relationships among the triplet of passage, question and answers. It is non-trivial but ignored to transfer knowledge from other MRC tasks such as SQuAD due to task specific of MMRC.In this paper, we reconstruct multi-choice to single-choice by training a binary classification to distinguish whether a certain answer is correct. Then select the option with the highest confidence score as the final answer. Our proposed method gets rid of the multi-choice framework and can leverage resources of other tasks. We construct our model based on the ALBERT-xxlarge model and evaluate it on the RACE and DREAM datasets. Experimental results show that our model performs better than multi-choice methods. In addition, by transferring knowledge from other kinds of MRC tasks, our model achieves state-of-the-art results in both single and ensemble settings.


Big tech's push for automation hides the grim reality of 'microwork' Phil Jones

The Guardian

When customers in the London borough of Hackney shop in the new Amazon Fresh store, they no longer pay a checkout operator but simply walk out with their goods. Amazon describes "just walk out shopping" as an effortless consumer experience. The rise of automated stores during the pandemic is just the tip of the iceberg. Floor-cleaning robots have been introduced in hospitals, supermarkets and schools. Fast-food restaurants are employing burger-grilling robots and chatbots.




Bach in a Box - Real-Time Harmony

Spangler, Randall R., Goodman, Rodney M., Hawkins, Jim

Neural Information Processing Systems

The learning and inferencing algorithms presented here speak an extended form of the classical figured bass representation common in Bach's time. Paired with a melody, figured bass provides a sufficient amount of information to reconstruct the harmonic content of a piece of music. Figured bass has several characteristics which make it well-disposed to learning rules. It is a symbolic format which uses a relatively small alphabet of symbols. It is also hierarchical - it specifies first the chord function that is to be played at the current note/timestep, then the scale step to be played by the bass voice, then additional information as needed to specify the alto and tenor scale steps. This allows our algorithm to fire sets of rules sequentially, to first determine the chord function which should be associated with a new melody note, and then to use that chord function as an input attribute to subsequent rulebases which determine the bass, alto, and tenor scale steps. In this way we can build up the final chord from simpler pieces, each governed by a specialized rulebase.