Benchmarking Meta-embeddings: What Works and What Does Not (2021.findings-emnlp)

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Challenge: Existing methods to build meta-embeddings have been evaluated using a variety of methods and datasets, which makes it difficult to draw meaningful conclusions regarding the merits of each approach.
Approach: They propose a unified framework for a fair and objective meta-embedding evaluation using intrinsic and extrinsic tasks.
Outcome: The proposed framework outperforms existing methods on intrinsic and extrinsic evaluation benchmarks and outperformed existing methods.

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Challenge: Existing methods for producing word embeddings have shown to produce accurate meta-embeddings from pre-trained source embeddables.
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Challenge: Attempts to find a single technique for general-purpose intrinsic evaluation of word embeddings have so far not been successful.
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Challenge: Existing evaluation methods for compressed text embeddings are either expensive or too simplistic.
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Proceedings of the First Workshop on Aggregating and Analysing Crowdsourced Annotations for NLP (D19-59)

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Contextual Embeddings: When Are They Worth It? (2020.acl-main)

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Challenge: In recent years, rich contextual embeddings have enabled rapid progress on benchmarks like GLUE, but require significant computational resources during pretraining and during downstream task training and inference.
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Sentence Meta-Embeddings for Unsupervised Semantic Textual Similarity (2020.acl-main)

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Challenge: Existing word embeddings combine complementary strengths of their components to achieve unsupervised semantic similarity (STS).
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Challenge: Existing evaluation metrics are insufficient to meet requirements for natural language generation.
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