Pisa has an international airport, Aeroporto Galileo Galilei (PSA) (you can locate it on the SIGIR 2016 map), with daily flights to and from many national and international destinations; more than 50 airports are currently connected to the airport of Pisa via low-cost flights by carriers such as RyanAir (which has direct flights between Pisa and Barcelona, Dublin, Düsseldorf, Edinburgh, Glasgow, Hamburg, London, Madrid, Munich, Oslo, and Stockholm, among others) and easyJet (which has direct flights between Pisa and Berlin, London, and Paris, among others). The timetable of incoming and outgoing flights is available at the above website.
Aeroporto Galileo Galilei is on the outskirts of the town, approximately 1.9 kms from the Palazzo dei Congressi di Pisa, where the conference takes place. To reach the Palazzo dei Congressi it is probably most convenient to take a taxi.
As an alternative you may also wish to fly to Firenze’s Aeroporto Amerigo Vespucci, since Firenze is just a one-hour train ride from Pisa.
The railway station is located on the main railway line from Roma to Torino. There is also a very frequent train service to and from Firenze. On the Ferrovie dello Stato (the Italian national railway company) website you may find a train schedule and ticket booking service. The railway station is approximately 1.1 kms from the the Palazzo dei Congressi di Pisa. To reach the Palazzo dei Congressi you can go by walk or take a taxi.
Pisa is near the intersection of two toll highways, A12 “Autostrada Azzurra” (Genova – Livorno) and A11 “Autostrada Firenze-Mare” (Pisa – Firenze). Pisa is also served by the (toll-free) motorway “Strada di Grande Comunicazione Firenze-Pisa-Livorno”. You may want to plan your route using Google maps.