Dario Bertero


2018

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Investigating Audio, Video, and Text Fusion Methods for End-to-End Automatic Personality Prediction
Onno Kampman | Elham J. Barezi | Dario Bertero | Pascale Fung
Proceedings of the 56th Annual Meeting of the Association for Computational Linguistics (Volume 2: Short Papers)

We propose a tri-modal architecture to predict Big Five personality trait scores from video clips with different channels for audio, text, and video data. For each channel, stacked Convolutional Neural Networks are employed. The channels are fused both on decision-level and by concatenating their respective fully connected layers. It is shown that a multimodal fusion approach outperforms each single modality channel, with an improvement of 9.4% over the best individual modality (video). Full backpropagation is also shown to be better than a linear combination of modalities, meaning complex interactions between modalities can be leveraged to build better models. Furthermore, we can see the prediction relevance of each modality for each trait. The described model can be used to increase the emotional intelligence of virtual agents.

2016

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Deep Learning of Audio and Language Features for Humor Prediction
Dario Bertero | Pascale Fung
Proceedings of the Tenth International Conference on Language Resources and Evaluation (LREC'16)

We propose a comparison between various supervised machine learning methods to predict and detect humor in dialogues. We retrieve our humorous dialogues from a very popular TV sitcom: “The Big Bang Theory”. We build a corpus where punchlines are annotated using the canned laughter embedded in the audio track. Our comparative study involves a linear-chain Conditional Random Field over a Recurrent Neural Network and a Convolutional Neural Network. Using a combination of word-level and audio frame-level features, the CNN outperforms the other methods, obtaining the best F-score of 68.5% over 66.5% by CRF and 52.9% by RNN. Our work is a starting point to developing more effective machine learning and neural network models on the humor prediction task, as well as developing machines capable in understanding humor in general.

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Real-Time Speech Emotion and Sentiment Recognition for Interactive Dialogue Systems
Dario Bertero | Farhad Bin Siddique | Chien-Sheng Wu | Yan Wan | Ricky Ho Yin Chan | Pascale Fung
Proceedings of the 2016 Conference on Empirical Methods in Natural Language Processing

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A Long Short-Term Memory Framework for Predicting Humor in Dialogues
Dario Bertero | Pascale Fung
Proceedings of the 2016 Conference of the North American Chapter of the Association for Computational Linguistics: Human Language Technologies

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Zara: A Virtual Interactive Dialogue System Incorporating Emotion, Sentiment and Personality Recognition
Pascale Fung | Anik Dey | Farhad Bin Siddique | Ruixi Lin | Yang Yang | Dario Bertero | Yan Wan | Ricky Ho Yin Chan | Chien-Sheng Wu
Proceedings of COLING 2016, the 26th International Conference on Computational Linguistics: System Demonstrations

Zara, or ‘Zara the Supergirl’ is a virtual robot, that can exhibit empathy while interacting with an user, with the aid of its built in facial and emotion recognition, sentiment analysis, and speech module. At the end of the 5-10 minute conversation, Zara can give a personality analysis of the user based on all the user utterances. We have also implemented a real-time emotion recognition, using a CNN model that detects emotion from raw audio without feature extraction, and have achieved an average of 65.7% accuracy on six different emotion classes, which is an impressive 4.5% improvement from the conventional feature based SVM classification. Also, we have described a CNN based sentiment analysis module trained using out-of-domain data, that recognizes sentiment from the speech recognition transcript, which has a 74.8 F-measure when tested on human-machine dialogues.

2015

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HLTC-HKUST: A Neural Network Paraphrase Classifier using Translation Metrics, Semantic Roles and Lexical Similarity Features
Dario Bertero | Pascale Fung
Proceedings of the 9th International Workshop on Semantic Evaluation (SemEval 2015)