λ0	λ1	λ2	λ3
0.070	0.254	0.492	0.184

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λ0	λ1	λ2	λ3
0.000	0.000	0.000	1.000

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Boost	λ0	λ1	λ2	λ3	Cross entr.	Perplexity
0	0.070	0.254	0.492	0.184	7.468	177.053
0.1	0.063	0.229	0.443	0.265	7.470	177.247
0.2	0.056	0.203	0.394	0.347	7.497	180.581
0.3	0.049	0.178	0.345	0.429	7.546	186.918
0.4	0.042	0.152	0.295	0.510	7.620	196.713
0.5	0.035	0.127	0.246	0.592	7.722	211.097
0.6	0.028	0.102	0.197	0.673	7.860	232.393
0.7	0.021	0.076	0.148	0.755	8.053	265.669
0.8	0.014	0.051	0.098	0.837	8.341	324.279
0.9	0.007	0.025	0.049	0.918	8.850	461.499
0.95	0.004	0.013	0.025	0.959	9.361	657.744
0.99	0.001	0.003	0.005	0.992	10.500	1448.257

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Discount	λ0	λ1	λ2	λ3	Cross entr.	Perplexity
1	0.070	0.254	0.492	0.184	7.468	177.053
0.9	0.072	0.260	0.503	0.165	7.472	177.525
0.8	0.073	0.265	0.514	0.147	7.478	178.229
0.7	0.075	0.271	0.525	0.129	7.485	179.198
0.6	0.076	0.277	0.536	0.110	7.496	180.480
0.5	0.078	0.283	0.548	0.092	7.509	182.140
0.4	0.080	0.288	0.559	0.073	7.526	184.281
0.3	0.081	0.294	0.570	0.055	7.547	187.071
0.2	0.083	0.300	0.581	0.037	7.576	190.823
0.1	0.084	0.305	0.592	0.018	7.617	196.297
0	0.086	0.311	0.603	0.000	7.704	208.488

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Coverage
Pos	Un. Unigram	Un. Bigram	Un. Trigram	Unigram	Bigram	Trigram
2000	18.956	9.956	4.171	9.809	7.749	4.075
4000	30.253	18.653	8.491	19.758	15.823	8.719
6000	38.608	26.352	12.702	29.672	23.828	13.399
8000	46.044	33.280	16.208	39.561	31.787	17.733
10000	52.215	39.059	19.113	49.395	39.546	21.833
12000	59.430	44.922	21.485	59.074	46.425	25.047
14000	66.329	50.491	23.788	68.733	53.555	28.402
16000	76.329	55.179	25.169	77.752	58.799	30.302
18000	84.557	59.180	26.349	86.636	64.104	32.202
20000	92.500	62.937	27.426	95.545	69.053	34.027
20003	92.500	62.937	27.426	95.550	69.053	34.027

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Data	Unigram	Bigram	Trigram
train	8077	58014	116730
heldout	3859	19479	32728
test	3160	11923	17454