Learn Before
  • Self-Supervised Learning

Prefix Language Modeling (PrefixLM)

Prefix Language Modeling (PrefixLM) is a self-supervised pre-training objective where a model learns to predict a subsequent sequence of text given an initial prefix that serves as context. In an encoder-decoder implementation, the encoder processes the entire prefix non-causally to build a rich contextual representation. The decoder then uses this representation to autoregressively generate the remaining part of the sequence.

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Ch.1 Pre-training - Foundations of Large Language Models

Foundations of Large Language Models

Foundations of Large Language Models Course

Computing Sciences

Related
  • Comparison of Self-Supervised Pre-training and Self-Training

  • Architectural Categories of Pre-trained Transformers

  • Self-Supervised Classification Tasks for Encoder Training

  • Prefix Language Modeling (PrefixLM)

  • Mask-Predict Framework

  • Discriminative Training

  • Learning World Knowledge from Unlabeled Data

  • Emergent Linguistic Capabilities from Pre-training

  • Architectural Approaches to Self-Supervised Pre-training

  • Self-Supervised Pre-training of Encoders via Masked Language Modeling

  • Word Prediction as a Core Self-Supervised Task

  • Learning World Knowledge from Unlabeled Data via Self-Supervision

  • A research team has a massive collection of unlabeled historical texts. Their goal is to pre-train a language model that understands the specific vocabulary and sentence structures within these documents, but they have no budget for manual data annotation. Which of the following approaches is the most effective and feasible for their pre-training task?

  • Analysis of Supervision Signal Generation

  • A team is developing a pre-training strategy for a new language model using a large corpus of unlabeled text. Which of the following proposed tasks best exemplifies the principles of self-supervised learning?

Learn After
  • Comparison of Prefix and Causal Language Modeling

  • Example of Prefix Language Modeling Input Format

  • Training Encoder-Decoder Models with Prefix Language Modeling

  • Consider a model architecture composed of an encoder and a decoder, trained with a self-supervised objective to complete a text sequence given an initial prefix. Which statement best analyzes the distinct processing methods of the encoder and decoder for this task?

  • Processing a Text Sequence

  • In a self-supervised text generation task, a model is given an initial sequence of words (a prefix) and trained to produce the words that follow. For an architecture that uses two distinct components to accomplish this, match each component or data piece with its primary role or characteristic.