Because you can bias the process to be more likely to represent data relevant to your domain. Note: I'm not in any way a compression expert, so while it may be

Because you can bias the process to be more likely to represent data relevant to your domain. Note: I'm not in any way a compression expert, so while it may be obvious to you/others, it's a little interesting for me to think of compression in this way (sending parameters to a shared process, instead of sharing the raw data).