{"2000.perplexity": 1.7814306020736694, "4000.perplexity": 1.7171242237091064, "6000.perplexity": 1.7327085733413696, "8000.perplexity": 1.6859264373779297, "10000.perplexity": 1.6911686658859253, "12000.perplexity": 1.7163463830947876, "best_perp": 1.6859264373779297, "best_perp_step": 8000}