in grok/visualization.py [0:0]
def factor_expts(expts):
result = {}
for expt in expts:
expt_s = expt.split("_")
arch = "_".join(expt_s[:3])
t = int(float(expt_s[3].split("-")[1]))
result.setdefault(arch, {})
result[arch][t] = expt
return result