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Large Language Models · Quiz 2 · Jan 2024

Large Language Models · Quiz 2 · Jan 2024

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Question 134 NAT · 3.0 marks

Source diagram or notation
Based on the above data answer the given subquestions.
What is the size of the vocabulary built by the Team C?

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Question 135 MSQ · 4.0 marks

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Based on the above data answer the given subquestions.
Choose the correct statements about the number of parameters in the model (excluding the embedding and output layer parameters)
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Team A model has less number of parameters than the team B
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Team B model has less number of parameters than the team C
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Team C model has more number of parameters than the team A
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All models have the same number of parameters

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Question 136 MSQ · 4.0 marks

Source diagram or notation
Based on the above data answer the given subquestions.
Assume that the word “acrophobia” is not present in the vocabulary, then which of the following tokenizer(s) is(are) guaranteed to tokenize this word into sub-words units (i.e., it does not return [unk] token)
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The tokenizer used by the team A
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the tokenizer used by the team B
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the tokenizer used by the team C
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None of the given options

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Question 137 MCQ · 3.0 marks

Source diagram or notation
Based on the above data answer the given subquestions.
Assume that team A and team B pre-trained the model for 1 million steps. Suppose they want to fine-tune the model for sentiment classification tasks (where the dataset contains sentences, digits and emojis). Choose the correct statement
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Team A can use the tokenizer from Team B and fine-tune the model and vice versa
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We can not interchange both teams’ tokenizers while fine-tuning.

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Question 138 MSQ · 4.0 marks

Suppose we have two decoder-only models, namely Model A and Model B. Assume we have two datasets, one for unsupervised pre-training (Web-Text) and the other for supervised training (text summarization). Model A was trained directly on the training set of the supervised dataset. Model B was trained on the pre-training dataset using the CLM objective. Suppose we want to test the performance of both models on the test set of summarization task. Then choose the correct statements
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Model A can directly be used on the test set
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It is possible to use Model B directly on the test set without fine-tuning on the training set
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Model B **should be** fine-tuned first on the training set and then use the test set.

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Question 139 MSQ · 4.0 marks

Source diagram or notation
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[v] of science is [w] contradictory attitudes [x] counterintuitive they may be [y] how deep truths are winnowed [z]
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[a] of science is [b] contradictory attitudes [c] counterintuitive they may be [d] how deep truths are winnowed [z]
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[v] of science is [w] contradictory attitudes [x] counterintuitive they may be [y] how deep truths are winnowed
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[a] of science is [b] contradictory attitudes [c] counterintuitive they may be [d] how deep truths are winnowed
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[w] contradictory attitudes [v] of science is [x] counterintuitive they may be [y] how deep truths are winnowed [z]
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[v] of science is [v] contradictory attitudes [x] counterintuitive they may be [x] how deep truths are winnowed [y]

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Question 140 MSQ · 3.0 marks

Which of the following models uses a form of denoising objective for pre-training?
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BERT
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GPT-1 and GPT-2
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BART
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T5

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Question 141 MSQ · 4.0 marks

Consider training an encoder-decoder model (say, T5 baseline) on a pre-training dataset that contains 1 Billion tokens. Let the batch size be 64 × 128, that is 2\(^{13}\) tokens. Suppose the model is trained for 2\(^{15}\) steps by varying the size of the data (all other aspects are fixed) A. Train the model only on the first one million tokens, referred to as Model A B. Train the model on the entire dataset, referred to as Model B Based on the above data answer the given subquestions.
Which of the following statements is (are) correct under this setup?
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Training loss of Model A will be less than training loss of Model B
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Training loss of Model B will be less than training loss of Model A
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Test loss of Model B will likely be less than test loss of Model A
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Test loss of Model A will likely be less than test loss of Model B

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Question 142 MSQ · 4.0 marks

Consider training an encoder-decoder model (say, T5 baseline) on a pre-training dataset that contains 1 Billion tokens. Let the batch size be 64 × 128, that is 2\(^{13}\) tokens. Suppose the model is trained for 2\(^{15}\) steps by varying the size of the data (all other aspects are fixed) A. Train the model only on the first one million tokens, referred to as Model A B. Train the model on the entire dataset, referred to as Model B Based on the above data answer the given subquestions.
Which of the following modifications will improve the performance of both models?
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Increasing the training steps helps Model B more than Model A in terms of generalization performance
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Increasing the training steps helps both Model A and Model B in terms of generalization performance
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None of the given modifications helps the model to improve their generalization performance

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Question 143 MSQ · 5.0 marks

Consider a summarization task. Assume the prefix is “Summarize the following:” and the input sentence is “There are a lot of videos on YouTube etc. that give the appearance of education, but if you look closely they are really just entertainment. This is very convenient for everyone involved: the people watching enjoy thinking they are learning (but they are just having fun)” and the model is supposed to summarize it.Then which of the following architectures **could be used** for this task
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A decoder-only model with a causal mask
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A decoder-only model with a prefix mask
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An encoder-only model with a fully visible mask
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Encoder-Decoder model with fully visible mask in the encoder and causal mask in the decoder

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Question 144 MSQ · 4.0 marks

Suppose we are given a Model A with N layers and the dataset with D tokens. Choose the correct statements according to the scaling law.
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Increasing the model size requires a proportionate increase in the dataset size to reduce the test loss
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Increasing the model size requires a proportionate increase in the dataset size to reduce the training loss
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Increasing the model size requires us to double the dataset size to reduce the test loss
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Increasing the model size requires us to double the dataset size to reduce the train loss

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Question 145 MCQ · 3.0 marks

Which of the following components in the data pre-processing pipeline removes pages that contain bad words?
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Language Identification
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Exact Deduplication
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Fuzzy Deduplication
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ML classifiers for quality filtering
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Simple heuristics to detect toxic contents

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Question 146 MCQ · 3.0 marks

Suppose a team wants to build a dataset for a low-resource language. They took all Wikipedia dumps for that language and found that the dataset size was insufficient. Then the statement that using years of Common Crawl Snapshots would be helpful to increase the size of the dataset is
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TRUE
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FALSE

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Question 147 MCQ · 2.0 marks

The statement that the presence of significant duplicate contents in the pre-training dataset degrades the performance of Large Language Models is
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TRUE
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FALSE       **DL(CV)** **Section Id :** 64065353063 **Section Number :** 10 **Section type :** Online **Mandatory or Optional :** Mandatory **Number of Questions :** 23 **Number of Questions to be attempted :** 23 **Section Marks :** 50 **Display Number Panel :** Yes **Section Negative Marks :** 0 **Group All Questions :** No **Enable Mark as Answered Mark for Review and** Yes **Clear Response :** **Maximum Instruction Time :** 0

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