Which statement explains the historical significance of the Tuskegee Airmen?

¡Las vacaciones!   Regresaste de vacaciones y le escribes un correo a un(a) amigo(a) tuyo(a) para narrarle tu experiencia. Incluye la siguiente información: Un saludo Menciona adónde fuiste de vacaciones. Narra (Narrate) tu experiencia cuando fuiste de vacaciones. Usa el pretérito. Habla de 3 cosas que hiciste durante las vacaciones. Compraste ropa para viajar. Describe dos artículos diferentes que compraste usando los colores y estilos.  Dile a tu amigo(a) qué otras cosas compraste y para quién las compraste. Usa pronombres de objeto directo. (Think souvenirs or gifts you brought back from vacation). Menciona cuánto costó los recuerdos que compraste. Describe dos actividades que hacías de niño(a) cuando ibas de vacaciones. Usa el imperfecto. Una despedida

Place your name on all pages. Number appropriately, and solve on your paper. You must show all work to receive credit. Answer according to methods presented in the class or textbook. Partial credit is possible. Your 2 hr 20 minute exam time officially begins after you are authenticated. The first question of the exam is below. ———————————————————————– (5 pts) Let the regression equation be given by yL=12x+74{“version”:”1.1″,”math”:”yL=12x+74″}, where x{“version”:”1.1″,”math”:”x”} represents the number of books read and yL{“version”:”1.1″,”math”:”yL”} represents predicted IQ.  Determine approximately how many books were read for a predicted IQ of 158.

How does TF-IDF improve upon Bag of Words?

Which of the following words would likely have a high TF-IDF score in a dataset of customer reviews about electronics?

An HR department is analyzing job descriptions. To improve keyword searches, their system converts all text into lowercase, removes punctuation, and eliminates extra spaces.  What preprocessing step is this?

A media company is processing news articles.  To reduce redundant words, they convert different forms of “publishing,” “published,” and “publisher” to “publish.”  What preprocessing step is this?

What does tokenization do?

Which of the following is not a typical step in text preprocessing?

What is the primary goal of a classification model in machine learning?