@incollection{example_invited_talk,
  author = {Zhao, Tianqi},
  note = {Example Location},
  publisher = {Example Talk Name},
  year = {2040},
  keywords = {invited}
}

@incollection{example_conference,
  author = {Zhao, Tianqi},
  title = {Example talk},
  note = {Example Conference},
  year = {2040}
}