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What is a corpus in the context of natural language processing?

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שאלה #135525

		A single token in a linguistic structure
		A sequence of adjacent words
done		A set of documents treated as the known universe
		A linguistic rule for sentence formation

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What are stopwords in natural language processing?

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שאלה #135526

done		Words that are filtered out before or after processing text data
		Words that are the focus of linguistic analysis

נערך לפני 5 חודשים Shachar Adam

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What type of ambiguity occurs when a word has more than one possible meaning?

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שאלה #135528

done		Lexical ambiguity
		Syntactic ambiguity
		Morphological ambiguity
		Pragmatic ambiguity

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In the phrase "I see a man on the hill with a telescope," what type of ambiguity is present?

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שאלה #135530

		Lexical ambiguity
		Morphological ambiguity
done		Syntactic ambiguity
		Semantic ambiguity

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What is the primary source of ambiguity in the phrase "Can you pass the salt"?

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שאלה #135532

		Lexical ambiguity
		Morphological ambiguity
		Syntactic ambiguity
done		Pragmatic ambiguity

נערך לפני 5 חודשים Shachar Adam

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מיין לפי דירוג חדש ישן

What is the primary characteristic of the bag of words representation in natural language processing?

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שאלה #135591

		It captures the sequential order of words in a document.
		It preserves the syntactic structure of sentences.
		It emphasizes the semantic relationships between words in a sentence.
done		It disregards the order of words and focuses only on their frequency.

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מיין לפי דירוג חדש ישן

What is the purpose of TF-IDF in information retrieval and text mining?

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שאלה #135592

		To calculate the total number of words in a document
		To determine the syntactic structure of sentences
done		To reflect how important a word is to a document in a collection or corpus
		To identify the sequential order of words in a document

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For a term i in document j, the correct formula to calculate the TF-IDF is: w_i,j = tf_i,j * log(N/df_i) when: tf_i,j - number of occurrences of i in j df_i - number of documents containing i N - total number of documents

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שאלה #135595

done		True
		False

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חשבו tf-idf עבור t1 ב-d1 וסמנו את התשובה הנכונה:

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שאלה #135605

done		log(10/9) * 24
		log(10/9) * 21
		log(7/10) * 32

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What is Word2Vec?

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שאלה #135740

		A technique for compressing large text documents
done		A machine learning algorithm for word embedding
		A method for speech recognition
		An algorithm for generating random text

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