Table 1.

Performances of four models for two tasks

		Named entity recognition				Word segmentation
		P	R	F1		P	R	F1
	MSRSeg	–	–	–	–	79.42	86.00	82.58
Ftr. Set 1	Independent	89.61	84.19	86.82		95.20	94.75	94.97
	Incremental	89.84	85.69	87.72	0.90	95.25	94.92	95.09	0.12
	Joint_CRF	90.26	86.66	88.42	1.60	95.27	95.13	95.20	0.23
	Joint_DD	91.50	86.11	88.72	1.90	95.30	95.25	95.27	0.30
Ftr. Set 2	Independent	89.48	85.18	87.28		95.31	95.05	95.18
	Incremental	89.59	86.03	87.77	0.49	95.26	95.10	95.18	0.00
	Joint_CRF	89.84	87.11	88.45	1.17	95.31	95.31	95.31	0.13
	Joint_DD	91.25	86.92	89.03	1.75	95.31	95.38	95.35	0.17
Ftr. Set 3	Independent	91.03	87.50	89.23		95.38	95.30	95.34
	Incremental	90.96	88.10	89.51	0.28	95.48	95.56	95.55	0.21
	Joint_CRF	91.52	88.67	90.07	0.84	95.52	95.57	95.59	0.25
	Joint_DD	92.15	88.41	90.24	1.01	95.64	95.53	95.55	0.21

		Problem			Test			Treatment			Medication
		P	R	F	P	R	F	P	R	F	P	R	F
Ftr. Set 1	Independent	90.4	87.9	89.1	90.5	82.8	86.5	79.9	66.0	72.3	91.2	71.1	79.9
	Incremental	90.6	89.1	89.9	90.3	84.7	87.4	79.3	66.8	72.5	93.8	75.5	83.7
	Joint_CRF	91.2	89.8	90.5	90.9	85.6	88.1	81.0	67.9	73.9	89.9	80.4	84.9
	Joint_DD	92.3	89.8	91.0	92.4	84.1	88.0	81.9	69.3	75.1	93.7	72.5	81.8
Ftr. Set 2	Independent	90.4	88.7	89.5	89.0	82.6	85.7	79.9	67.1	72.9	92.5	75.9	83.4
	Incremental	90.4	89.3	89.9	89.3	84.4	86.8	79.8	68.0	73.5	93.8	77.2	84.7
	Joint_CRF	90.8	90.0	90.4	89.6	85.6	87.6	81.2	69.3	74.8	89.5	82.8	86.0
	Joint_DD	92.0	90.5	91.3	92.1	84.1	87.9	81.5	69.7	75.1	94.0	75.9	84.0
Ftr. Set 3	Independent	92.0	90.5	91.2	91.1	85.5	88.2	80.0	67.1	73.0	93.6	86.4	89.9
	Incremental	92.0	91.0	91.5	91.0	86.0	88.5	79.7	68.3	73.6	92.8	86.8	89.7
	Joint_CRF	92.6	91.3	91.9	91.5	87.0	89.2	81.3	70.1	75.3	92.6	88.7	90.6
	Joint_DD	93.1	91.2	92.1	92.2	86.3	89.2	82.4	69.7	75.5	93.7	87.6	90.6

CRF, conditional random field; DD, dual decomposition. Bold indicates the highest values.