Update README.md with dataset card

README.md

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 task_ids:
   - sentiment-classification
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+
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+# Dataset Card for CSFD movie reviews (Czech)
+
+
+## Dataset Description
+
+The dataset contains user reviews from Czech movie databse website <https://csfd.cz>.
+Each review contains text, rating, date, and basic information about the movie (or TV series).
+The dataset has in total (train+validation+test) 30,000 reviews. The data is balanced - each rating has approximately the same frequency.
+
+
+## Dataset Features
+
+Each sample contains:
+- `review_id`: unique string identifier of the review.
+- `rating_str`: string representation of the rating (from "0/5" to "5/5")
+- `rating_int`: integer representation of the rating (from 0 to 5)
+- `date`: date of publishing the review (just date, no time nor timezone)
+- `comment_language`: language of the review (always "cs")
+- `comment`: the string of the review
+- `item_title`: title of the reviewed item
+- `item_year`: publishing year of the item (string, can also be a range)
+- `item_kind`: kind of the item - either "film" or "seriál"
+- `item_genres`: list of genres of the item
+- `item_directors`: list of director names of the item
+- `item_screenwriters`: list of screenwriter names of the item
+- `item_cast`: list of actors and actress in the item
+
+
+## Dataset Source
+
+The data was mined and sampled from the <https://csfd.cz> website.
+Make sure to comply with the terms of conditions of the website operator when using the data.
+