7 research outputs found
Smart Agriculture : A Novel Multilevel Approach for Agricultural Risk Assessment over Unstructured Data
Detecting opportunities and threats from massive text data is a challenging
task for most. Traditionally, companies would rely mainly on structured data to
detect and predict risks, losing a huge amount of information that could be
extracted from unstructured text data. Fortunately, artificial intelligence
came to remedy this issue by innovating in data extraction and processing
techniques, allowing us to understand and make use of Natural Language data and
turning it into structures that a machine can process and extract insight from.
Uncertainty refers to a state of not knowing what will happen in the future.
This paper aims to leverage natural language processing and machine learning
techniques to model uncertainties and evaluate the risk level in each
uncertainty cluster using massive text data
BERT Based Clinical Knowledge Extraction for Biomedical Knowledge Graph Construction and Analysis
Background : Knowledge is evolving over time, often as a result of new
discoveries or changes in the adopted methods of reasoning. Also, new facts or
evidence may become available, leading to new understandings of complex
phenomena. This is particularly true in the biomedical field, where scientists
and physicians are constantly striving to find new methods of diagnosis,
treatment and eventually cure. Knowledge Graphs (KGs) offer a real way of
organizing and retrieving the massive and growing amount of biomedical
knowledge.
Objective : We propose an end-to-end approach for knowledge extraction and
analysis from biomedical clinical notes using the Bidirectional Encoder
Representations from Transformers (BERT) model and Conditional Random Field
(CRF) layer.
Methods : The approach is based on knowledge graphs, which can effectively
process abstract biomedical concepts such as relationships and interactions
between medical entities. Besides offering an intuitive way to visualize these
concepts, KGs can solve more complex knowledge retrieval problems by
simplifying them into simpler representations or by transforming the problems
into representations from different perspectives. We created a biomedical
Knowledge Graph using using Natural Language Processing models for named entity
recognition and relation extraction. The generated biomedical knowledge graphs
(KGs) are then used for question answering.
Results : The proposed framework can successfully extract relevant structured
information with high accuracy (90.7% for Named-entity recognition (NER), 88%
for relation extraction (RE)), according to experimental findings based on
real-world 505 patient biomedical unstructured clinical notes.
Conclusions : In this paper, we propose a novel end-to-end system for the
construction of a biomedical knowledge graph from clinical textual using a
variation of BERT models
Comparative Study of CNN and LSTM for Opinion Mining in Long Text
The digital revolution has encouraged many companies to set up new strategic and operational mechanisms to supervise the flow of information published about them on the Web. Press coverage analysis is a part of sentiment analysis that allows companies to discover the opinion of the media concerning their activities, products and services. It is an important research area, since it involves the opinion of informed public such as journalists, who may influence the opinion of their readers. However, from an implementation perspective, the analysis of the opinion from media coverage encounters many challenges. In fact, unlike social networks, the Media coverage is a set of large textual documents written in natural language. The training base being huge, it is necessary to adopt large-scale processing techniques like Deep Learning to analyze their content. To guide researchers to choose between one of the most commonly used models CNN and LSTM, we compare and apply both models for opinion mining from long text documents using real datasets
Comparative study of CNN and LSTM for opinion mining in long text
The digital revolution has encouraged many companies to set up new strategic and operational mechanisms to supervise the flow of information published about them on the Web. Press coverage analysis is a part of sentiment analysis that allows companies to discover the opinion of the media concerning their activities, products and services. It is an important research area, since it involves the opinion of informed public such as journalists, who may influence the opinion of their readers. However, from an implementation perspective, the analysis of the opinion from media coverage encounters many challenges. In fact, unlike social networks, the Media coverage is a set of large textual documents written in natural language. The training base being huge, it is necessary to adopt large-scale processing techniques like Deep Learning to analyze their content. To guide researchers to choose between one of the most commonly used models CNN and LSTM, we compare and apply both models for opinion mining from long text documents using real datasets
Unit Load Devices (ULD) Demand Forecasting in the Air Cargo for Optimal Cost Management
In recent decades, the airline industry has become very competitive. With the advent of large aircraft in service, unit load devices (ULD) have become an essential ele‐ ment for efficient air transport. They can load a large amount of baggage, cargo or mail using only one unit. Since this results in fewer units to load, saving time and efforts of ground crews and helping to avoid delayed flig‐ hts. However, a deficient loading of the units causes ope‐ rating irregularities, costing the company and contribu‐ ting to the dissatisfaction of the customers. In contrast, an excess load of containers is at the expense of cargo. In this paper we propose an approach to predict the de‐ mand for baggage in order to optimize the management of its ULD flow. Specifically, we build prediction models: ARIMA following the BOX‐JENKINS approach and expo‐ nential smoothing methods, in order to obtain more accu‐ rate forecasts. The approach is tested using the operatio‐ nal data of flight processing and the results are compared with four benchmark method (SES, DES, Holt‐Winters and Naive prediction) using different performance indicators: MAE, MSE, MAPE , WAPE, RMSE, SMPE. The results obtai‐ ned with the exponential smoothing methods surpass the benchmarks by providing more accurate forecasts
Unit load devices (ULD) demand forecasting in the air cargo for optimal cost management
In recent decades, the airline industry has become very competitive. With the advent of large aircraft in service, unit load devices (ULD) have become an essential ele‐ ment for efficient air transport. They can load a large amount of baggage, cargo or mail using only one unit. Since this results in fewer units to load, saving time and efforts of ground crews and helping to avoid delayed flig‐ hts. However, a deficient loading of the units causes ope‐ rating irregularities, costing the company and contribu‐ ting to the dissatisfaction of the customers. In contrast, an excess load of containers is at the expense of cargo. In this paper we propose an approach to predict the de‐ mand for baggage in order to optimize the management of its ULD flow. Specifically, we build prediction models: ARIMA following the BOX‐JENKINS approach and expo‐ nential smoothing methods, in order to obtain more accu‐ rate forecasts. The approach is tested using the operatio‐ nal data of flight processing and the results are compared with four benchmark method (SES, DES, Holt‐Winters and Naive prediction) using different performance indicators: MAE, MSE, MAPE , WAPE, RMSE, SMPE. The results obtai‐ ned with the exponential smoothing methods surpass the benchmarks by providing more accurate forecasts