The increasing number of Chemical Compounds is a challenge for the researchers to explore such datasets. In this work, we propose the use of Recommender Systems in the exploration of new Chemical Compounds of interest to scientific researchers. Our approach consists in a Hybrid recommender model suitable for implicit feedback datasets and focused in retrieving a ranked list according to the relevance of the items. The model integrates collaborative-filtering algorithms for implicit feedback (Alternating Least Squares (ALS) and Bayesian Personalized Ranking(BPR)) and a new content-based algorithm, based on the semantic similarity of the Chemical Compounds in the ChEBI ontology. The algorithms were assessed on an implicit dataset of Chemical Compounds, CheRM-20, with more than 16.000 items (Chemical Compounds). The Hybrid model was able to improve the results of the collaborative-filtering algorithms, with increases of more than 10 percentage points in most of the assessed evaluation metrics.

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On 03 Jan, 2021
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Received 25 Sep, 2020
On 14 Sep, 2020
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On 03 Sep, 2020
On 03 Sep, 2020
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On 02 Sep, 2020
On 02 Sep, 2020
On 03 Jan, 2021
Received 15 Dec, 2020
Received 15 Dec, 2020
On 10 Dec, 2020
Invitations sent on 10 Dec, 2020
On 10 Dec, 2020
On 09 Dec, 2020
On 09 Dec, 2020
On 09 Dec, 2020
Received 07 Nov, 2020
On 07 Nov, 2020
Received 06 Nov, 2020
On 30 Oct, 2020
On 30 Oct, 2020
On 29 Oct, 2020
Invitations sent on 29 Oct, 2020
On 28 Oct, 2020
On 28 Oct, 2020
Posted 08 Sep, 2020
On 29 Sep, 2020
Received 28 Sep, 2020
Received 25 Sep, 2020
On 14 Sep, 2020
On 14 Sep, 2020
On 03 Sep, 2020
On 03 Sep, 2020
Invitations sent on 03 Sep, 2020
On 02 Sep, 2020
On 02 Sep, 2020
The increasing number of Chemical Compounds is a challenge for the researchers to explore such datasets. In this work, we propose the use of Recommender Systems in the exploration of new Chemical Compounds of interest to scientific researchers. Our approach consists in a Hybrid recommender model suitable for implicit feedback datasets and focused in retrieving a ranked list according to the relevance of the items. The model integrates collaborative-filtering algorithms for implicit feedback (Alternating Least Squares (ALS) and Bayesian Personalized Ranking(BPR)) and a new content-based algorithm, based on the semantic similarity of the Chemical Compounds in the ChEBI ontology. The algorithms were assessed on an implicit dataset of Chemical Compounds, CheRM-20, with more than 16.000 items (Chemical Compounds). The Hybrid model was able to improve the results of the collaborative-filtering algorithms, with increases of more than 10 percentage points in most of the assessed evaluation metrics.

Figure 1

Figure 2

Figure 3

Figure 4

Figure 5

Figure 6

Figure 7
The full text of this article is available to read as a PDF.
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