1. A method for recommending users to invite to a social networking system group comprising: receiving, at a social networking system server from a client device, a request from a user of a social networking system identifying the social networking system group maintained by the social networking system, the group including a set of users of the social networking system; accessing, by the social networking system, a user profile associated with the user of the social networking system, the user profile identifying one or more characteristics of the user; determining, by the social networking system server from the user profile, a set of candidate users connected to the user and not included in the identified group; determining, by the social networking system server, a user score for each of the candidate users, a user score for a candidate user based on each of one or more characteristics of the candidate user, a likelihood that the user will invite the candidate user when suggested, a likelihood that the candidate user will join the group when invited by the user, and an amount of activity of the user within the identified group; selecting, by the social networking system server, a candidate user associated with a user score greater than a threshold value from the set of candidate users; and presenting, by the social networking system server via the client device, the selected candidate user to the user within a social networking system interface displayed by the client device.
1. A method for recommending users to invite to a social networking system group comprising: receiving, at a social networking system server from a client device, a request from a user of a social networking system identifying the social networking system group maintained by the social networking system, the group including a set of users of the social networking system; accessing, by the social networking system, a user profile associated with the user of the social networking system, the user profile identifying one or more characteristics of the user; determining, by the social networking system server from the user profile, a set of candidate users connected to the user and not included in the identified group; determining, by the social networking system server, a user score for each of the candidate users, a user score for a candidate user based on each of one or more characteristics of the candidate user, a likelihood that the user will invite the candidate user when suggested, a likelihood that the candidate user will join the group when invited by the user, and an amount of activity of the user within the identified group; selecting, by the social networking system server, a candidate user associated with a user score greater than a threshold value from the set of candidate users; and presenting, by the social networking system server via the client device, the selected candidate user to the user within a social networking system interface displayed by the client device. 6. The method of claim 1 , wherein a characteristic of the candidate user comprises a frequency of interaction between the candidate user and the user.