Table 14: W2V-L1 results by level of hierarchy compared with supervised HTM strategies.
Datasets	Level	CluNMF	hLDA	hPAM	HSOC	KHTM
20News	1 Level	-12.6556 ± 0.00	-323.30 ± 0.00	-64.17 ± 0.00	-389.41 ± 69.27	-334.20 ± 0.00
2 Level	-45.37 ± 22.72	-448.93 ± 166.05	-57.03 ± 8.52	-395.88 ± 88.74	-595.39 ± 139.97
3 Level	-39.03 ± 22.94	-328.58 ± 184.81	-63.10 ± 9.81	-394.92 ± 72.10	-389.23 ± 137.96
ACM	1 Level	-34.15 ± 16.73	-368.20 ± 0.00	-69.87 ± 0.00	-529.64 ± 107.93	-371.89 ± 0.00
2 Level	-34.15 ± 16.73	-544.64 ± 111.50	-80.91 ± 9.70	-566.92 ± 103.18	-708.12 ± 146.29
3 Level	-27.26 ± 6.48	-210.03 ± 149.94	-76.90 ± 9.89	-594.03 ± 95.85	-336.04 ± 87.40
AngryBirds	1 Level	-20.27 ± 0.00	-514.71 ± 0.00	-68.27 ± 0.00	-528.23 ± 17.38	-546.60 ± 0.00
2 Level	-40.73 ± 16.47	-168.89 ± 66.22	-14.35 ± 10.30	-510.20 ± 22.09	-549.78 ± 151.09
3 Level	-80.55 ± 40.95	-98.05 ± 57.18	-49.83 ± 13.05	-474.54 ± 28.33	-133.16 ± 46.61
Dropbox	1 Level	-12.78 ± 0.00	-487.63 ± 0.00	-65.27 ± 0.00	-536.63 ± 34.81	-527.14 ± 0.00
2 Level	-60.01 ± 25.01	-247.70 ± 81.57	-42.53 ± 18.08	-537.71 ± 23.30	-569.05 ± 36.06
3 Level	-70.81 ± 34.32	-100.89 ± 91.65	-67.82 ± 9.78	-523.33 ± 28.47	-270.74 ± 61.27
Evernote	1 Level	-20.85 ± 0.00	-489.14 ± 0.00	-91.59 ± 0.00	-608.34 ± 44.38	-513.78 ± 0.00
2 Level	-29.64 ± 7.40	-364.60 ± 106.17	-76.91 ± 12.32	-620.48 ± 50.72	-634.88 ± 28.08
3 Level	-57.31 ± 33.23	-177.60 ± 114.68	-88.33 ± 7.67	-647.25 ± 48.42	-286.84 ± 83.09
Facebook	1 Level	-57.62 ± 16.87	-589.33 ± 0.00	-85.66 ± 0.00	-663.14 ± 53.09	-607.85 ± 0.00
2 Level	-82.49 ± 39.87	-547.12 ± 113.61	-84.63 ± 18.77	-684.94 ± 55.76	-748.77 ± 13.93
3 Level	-115.51 ± 51.69	-138.70 ± 109.50	-99.58 ± 10.82	-697.83 ± 46.95	-291.21 ± 80.64
InfoVis-Vast	1 Level	0.20 ± 0.00	-257.31 ± 0.00	-33.92 ± 0.00	-387.50 ± 38.85	-334.82 ± 0.00
2 Level	0.08 ± 0.08	-310.04 ± 41.24	-59.86 ± 4.40	-403.23 ± 39.74	-425.13 ± 62.71
3 Level	-4.91 ± 11.81	-432.98 ± 54.56	-62.42 ± 10.16	-430.37 ± 38.30	-481.76 ± 47.85
Pinterest	1 Level	-70.83 ± 18.60	-533.33 ± 0.00	-71.06 ± 0.00	-576.22 ± 30.36	-572.82 ± 0.00
2 Level	-99.54 ± 42.53	-233.10 ± 75.69	-23.58 ± 18.07	-551.13 ± 30.74	-597.43 ± 29.30
3 Level	-130.69 ± 50.72	-92.76 ± 74.58	-61.31 ± 11.70	-514.51 ± 37.95	-255.41 ± 56.51
TripAdvisor	1 Level	-19.15 ± 0.00	-457.78 ± 0.00	-74.75 ± 0.00	-583.20 ± 32.28	-493.97 ± 0.00
2 Level	-33.33 ± 11.39	-224.06 ± 80.71	-33.34 ± 22.71	-590.83 ± 22.31	-651.94 ± 13.39
3 Level	-58.03 ± 27.52	-113.90 ± 82.96	-72.45 ± 8.90	-581.31 ± 30.75	-132.31 ± 43.91
Tweets	1 Level	-80.04 ± 0.00	-826.50 ± 0.00	-94.64 ± 0.00	-683.25 ± 68.75	-832.73 ± 0.00
2 Level	-68.88 ± 24.80	-251.61 ± 64.09	-79.45 ± 9.09	-673.96 ± 66.61	-805.36 ± 25.10
3 Level	-98.40 ± 30.67	-106.99 ± 62.55	-93.81 ± 8.80	-656.36 ± 50.74	-260.31 ± 53.26
Uber	1 Level	-34.86 ± 0.00	-555.34 ± 0.00	-94.14 ± 0.00	-658.81 ± 52.17	-577.00 ± 0.00
2 Level	-40.37 ± 10.30	-576.02 ± 92.22	-85.52 ± 17.19	-678.75 ± 57.32	-673.40 ± 21.48
3 Level	-79.09 ± 40.06	-172.80 ± 117.45	-95.64 ± 7.48	-689.03 ± 53.47	-386.45 ± 102.42
WhatsApp	1 Level	-56.74 ± 0.00	-597.47 ± 0.00	-55.41 ± 0.00	-604.01 ± 14.66	-686.37 ± 0.00
2 Level	-59.06 ± 15.53	-147.96 ± 84.02	-23.31 ± 14.63	-577.14 ± 27.50	-571.32 ± 90.15
3 Level	-110.30 ± 37.06	-47.66 ± 43.13	-50.93 ± 13.31	-527.78 ± 40.16	-188.80 ± 38.45