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Originally Posted by dustygoon
If a team has its own analytics, is that different way of looking at same data or are they gathering different data (like quality of shots, time with puck in possession, board battles won). What technology exists or will soon exist to do better than shot attempts (high shot rate by Evander Kane from the boards is less valuable than from slot for example).
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Mentioned earlier, but we're moving towards expected goals as a better model/stat than possession/corsi. This combines various factors including the nature and position of the shot.
Right now, this is based on just so-so data (NHL gamesheets) at least in the public domain. When/if the NHL even moves to a system that captures player position and puck position on the ice automatically, it will improve the quality of these models.