Abstract: A method and an apparatus for presenting a candidate character string and a method and an apparatus for training a discriminative model are provided. The method for presenting a candidate character string may include: acquiring a character string of alphabetic words inputted by a user; determining a character transition weight of the character string, the character transition weight being used to characterize a transition probability of a character; generating a sort weight corresponding to the character string based on a pre-acquired basic weight matching the character string and the character transition weight; and selecting, according to an order indicated by the sort weight, at least two candidate character strings matching the character string from a pre-acquired candidate character string set for presentation.

Abstract: An input method for a virtual keyboard includes: in response to acquiring a click operation on the virtual keyboard, determining a click position of the click operation; determining a first probability that the click operation belongs to each key based on the click position and a current response region corresponding to each key in the virtual keyboard; determining a second probability that the click operation belongs to each key based on an input character sequence; and determining a target key corresponding to the click operation based on the first probability and the second probability for each key.

Abstract: An input method for a virtual keyboard includes: in response to acquiring a click operation on the virtual keyboard, determining a click position of the click operation; determining a first probability that the click operation belongs to each key based on the click position and a current response region corresponding to each key in the virtual keyboard; determining a second probability that the click operation belongs to each key based on an input character sequence; and determining a target key corresponding to the click operation based on the first probability and the second probability for each key.

Abstract: The application provides a character correction method and apparatus, a device, and a storage medium, where the method including: obtaining position information of a click operation of a user on a terminal screen, and obtaining feature information of the click operation; determining distance information between the position information and each key on the terminal screen; determining transition probability information from a character indicated by a history click operation to a character corresponding to each key; determining a character prediction result according to the feature information, the distance information and the transition probability information, where the character prediction result comprises a probability score that the character indicated by the click operation belongs to the character corresponding to each key; and determining the character with a highest probability score as a correction character corresponding to the click operation.

Abstract: The application provides a character correction method and apparatus, a device, and a storage medium, where the method including: obtaining position information of a click operation of a user on a terminal screen, and obtaining feature information of the click operation; determining distance information between the position information and each key on the terminal screen; determining transition probability information from a character indicated by a history click operation to a character corresponding to each key; determining a character prediction result according to the feature information, the distance information and the transition probability information, where the character prediction result comprises a probability score that the character indicated by the click operation belongs to the character corresponding to each key; and determining the character with a highest probability score as a correction character corresponding to the click operation.