Emotion Analysis

This tutorial is available as an IPython notebook at Malaya/example/emotion.

%%time
import malaya

CPU times: user 5.1 s, sys: 730 ms, total: 5.83 s
Wall time: 5.02 s

anger_text = 'babi la company ni, aku dah la penat datang dari jauh'
fear_text = 'takut doh tengok cerita hantu tadi'
happy_text = 'bestnya dapat tidur harini, tak payah pergi kerja'
love_text = 'aku sayang sgt dia dah doh'
sadness_text = 'kecewa tengok kerajaan baru ni, janji ape pun tak dapat'
surprise_text = 'sakit jantung aku, terkejut dengan cerita hantu tadi'

Get label

malaya.emotion.label

['anger', 'fear', 'happy', 'love', 'sadness', 'surprise']

All models follow same method as sklearn interface, predict to get batch of labels, predict_proba to get batch of probabilities.

Load multinomial model

All model interface will follow sklearn interface started v3.4,

model.predict(List[str])

model.predict_proba(List[str])

model = malaya.emotion.multinomial()

model.predict([anger_text])

['anger']

model.predict(
    [anger_text, fear_text, happy_text, love_text, sadness_text, surprise_text]
)

['anger', 'fear', 'happy', 'love', 'sadness', 'surprise']

model.predict_proba(
    [anger_text, fear_text, happy_text, love_text, sadness_text, surprise_text]
)

[{'anger': 0.32948272681734814,
  'fear': 0.13959708810717708,
  'happy': 0.14671455153216045,
  'love': 0.12489192355631354,
  'sadness': 0.1285972541671178,
  'surprise': 0.13071645581988448},
 {'anger': 0.11379406005377896,
  'fear': 0.4006934391283133,
  'happy': 0.11389665647702245,
  'love': 0.12481915233837086,
  'sadness': 0.0991261507380643,
  'surprise': 0.14767054126445014},
 {'anger': 0.15051890586527464,
  'fear': 0.13931406415515296,
  'happy': 0.32037710031973415,
  'love': 0.13747954667255546,
  'sadness': 0.11565866743099411,
  'surprise': 0.13665171555628927},
 {'anger': 0.1590563839629243,
  'fear': 0.14687344690114268,
  'happy': 0.1419948160674701,
  'love': 0.279550441361504,
  'sadness': 0.1285927908584157,
  'surprise': 0.14393212084854254},
 {'anger': 0.14268176425895224,
  'fear': 0.12178299725318226,
  'happy': 0.16187751258299898,
  'love': 0.1030494733572262,
  'sadness': 0.34277869755707796,
  'surprise': 0.1278295549905621},
 {'anger': 0.06724850384395685,
  'fear': 0.1283628050361525,
  'happy': 0.05801958643852813,
  'love': 0.06666524240157067,
  'sadness': 0.06537667186293224,
  'surprise': 0.6143271904168589}]

List available Transformer models

malaya.emotion.available_transformer()

	Size (MB)	Accuracy
bert	425.6	0.992
tiny-bert	57.4	0.988
albert	48.6	0.997
tiny-albert	22.4	0.981
xlnet	446.5	0.990
alxlnet	46.8	0.989

Make sure you can check accuracy chart from here first before select a model, https://malaya.readthedocs.io/en/latest/Accuracy.html#emotion-analysis

You might want to use Tiny-Albert, a very small size, 22.4MB, but the accuracy is still on the top notch.

Load Albert model

All model interface will follow sklearn interface started v3.4,

model.predict(List[str])

model.predict_proba(List[str])

model = malaya.emotion.transformer(model = 'albert')

INFO:tensorflow:loading sentence piece model

Predict batch of strings

model.predict_proba(
    [anger_text, fear_text, happy_text, love_text, sadness_text, surprise_text]
)

[{'anger': 0.9998901,
  'fear': 3.2524113e-05,
  'happy': 2.620931e-05,
  'love': 2.2871463e-05,
  'sadness': 9.782951e-06,
  'surprise': 1.8502667e-05},
 {'anger': 1.6941378e-05,
  'fear': 0.9999205,
  'happy': 9.070281e-06,
  'love': 2.044179e-05,
  'sadness': 6.7731107e-06,
  'surprise': 2.6314676e-05},
 {'anger': 0.15370166,
  'fear': 0.0013852724,
  'happy': 0.8268689,
  'love': 0.011433229,
  'sadness': 0.0011807577,
  'surprise': 0.005430276},
 {'anger': 1.2597201e-05,
  'fear': 1.7600481e-05,
  'happy': 9.667115e-06,
  'love': 0.9999331,
  'sadness': 1.3735416e-05,
  'surprise': 1.3399296e-05},
 {'anger': 1.9176923e-05,
  'fear': 1.1163729e-05,
  'happy': 6.353941e-06,
  'love': 7.004002e-06,
  'sadness': 0.99994576,
  'surprise': 1.0511084e-05},
 {'anger': 5.8739704e-05,
  'fear': 1.9771342e-05,
  'happy': 1.8316741e-05,
  'love': 2.2319455e-05,
  'sadness': 3.646786e-05,
  'surprise': 0.9998443}]

Open emotion visualization dashboard

Default when you call predict_words it will open a browser with visualization dashboard, you can disable by visualization=False.

model.predict_words(sadness_text)

from IPython.core.display import Image, display

display(Image('emotion-dashboard.png', width=800))

Stacking models

More information, you can read at https://malaya.readthedocs.io/en/latest/Stack.html

multinomial = malaya.emotion.multinomial()

malaya.stack.predict_stack([multinomial, model], [anger_text])

[{'anger': 0.5739743139312979,
  'fear': 0.002130791264743306,
  'happy': 0.0019609404077070573,
  'love': 0.0016901068202818533,
  'sadness': 0.001121633002361737,
  'surprise': 0.0015551851123993595}]

malaya.stack.predict_stack([multinomial, model], [anger_text, sadness_text])

[{'anger': 0.5739743139312979,
  'fear': 0.002130791264743306,
  'happy': 0.0019609404077070573,
  'love': 0.0016901068202818533,
  'sadness': 0.001121633002361737,
  'surprise': 0.0015551858768478731},
 {'anger': 0.0016541454680912208,
  'fear': 0.0011659984542562358,
  'happy': 0.001014179551389293,
  'love': 0.0008495638318424924,
  'sadness': 0.5854571761989077,
  'surprise': 0.001159149836587787}]