Systems and methods for confirming meeting events using electronic activities

A system comprising:

• one or more hardware processors configured by machine-readable instructions to:
• identify an electronic activity corresponding to a scheduled event and identifying a plurality of candidate participants;
• access, for a first participant of the candidate participants, a plurality of electronic activities corresponding to an electronic account of the first participant;
• extract, for each electronic activity of the plurality of electronic activities, a feature set including one or more features based on participants included in the electronic activity or content included in a body of the electronic activity;
• determine, for each electronic activity of the plurality of electronic activities, a relevancy score between the electronic activity and the scheduled event based on the extracted feature set;
• identify a subset of electronic activities of the plurality of electronic activities that have respective relevancy scores that satisfy a first threshold value;
• determine a probability score indicating a likelihood that the first participant attended the scheduled event based on the subset of electronic activities;
• generate, responsive to the probability score satisfying a second threshold value, an attendance tag indicating that the first participant attended the scheduled event;
• and
• store, in one or more data structures, an association between the attendance tag and the electronic activity corresponding to the scheduled event.

A non-transitory computer-readable storage medium having instructions embodied thereon, the instructions being executable by one or more processors to perform a method comprising:

• identifying an electronic activity corresponding to a scheduled event and identifying a plurality of candidate participants;
• accessing, for a first participant of the candidate participants, a plurality of electronic activities corresponding to an electronic account of the first participant;
• extracting, for each electronic activity of the plurality of electronic activities, a feature set including one or more features based on participants included in the electronic activity or content included in a body of the electronic activity;
• determining, for each electronic activity of the plurality of electronic activities, a relevancy score between the electronic activity and the scheduled event based on the extracted feature set;
• identifying a subset of electronic activities of the plurality of electronic activities that have respective relevancy scores that satisfy a first threshold value;
• determining a probability score indicating a likelihood that the first participant attended the scheduled event based on the subset of electronic activities;
• generating, responsive to the probability score satisfying a second threshold value, an attendance tag indicating that the first participant attended the scheduled event;
• and
• storing, in one or more data structures, an association between the attendance tag and the electronic activity corresponding to the scheduled event.