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Algorithms, Volume 14, Issue 9

2021 September - 22 articles

Cover Story: Mathematical models of dynamical systems often depend on physical parameters. In order to use such models in simulations as well as for observer or controller design, these parameters must be known. While it may be possible to measure some of them directly, other parameters have to be determined using experiments with the real system. This is only possible if these parameters are structurally identifiable. In order to test this property of the mathematical model, an algebraic approach is discussed, which is based on the indistinguishability of system states. This method differs from existing approaches that use the systems input–output equations. View this paper
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Articles (22)

  • Article
  • Open Access
5 Citations
3,054 Views
8 Pages

21 September 2021

In real systems, some damaged nodes can spontaneously become active again when recovered from themselves or their active neighbours. However, the spontaneous dynamical recovery of complex networks that suffer a local failure has not yet been taken in...

  • Article
  • Open Access
4 Citations
2,566 Views
12 Pages

Intelligent Search of Values for a Controller Using the Artificial Bee Colony Algorithm to Control the Velocity of Displacement of a Robot

  • José M. Villegas,
  • Camilo Caraveo,
  • David A. Mejía,
  • José L. Rodríguez,
  • Yuridia Vega,
  • Leticia Cervantes and
  • Alejandro Medina-Santiago

18 September 2021

The optimization is essential in the engineering area and, in conjunction with use of meta-heuristics, has had a great impact in recent years; this is because of its great precision in search of optimal parameters for the solution of problems. In thi...

  • Article
  • Open Access
2 Citations
2,542 Views
7 Pages

17 September 2021

The various biases affecting RNA mutations during evolution is the subject of intense research, leaving the extent of the role of random mutations undefined. To remedy this lacuna, using the codon table, the number of codons representing each amino a...

  • Article
  • Open Access
1 Citations
3,531 Views
17 Pages

Long-Term EEG Component Analysis Method Based on Lasso Regression

  • Hongjian Bo,
  • Haifeng Li,
  • Boying Wu,
  • Hongwei Li and
  • Lin Ma

17 September 2021

At present, there are very few analysis methods for long-term electroencephalogram (EEG) components. Temporal information is always ignored by most of the existing techniques in cognitive studies. Therefore, a new analysis method based on time-varyin...

  • Article
  • Open Access
8 Citations
3,231 Views
15 Pages

17 September 2021

In dealing with the algorithmic aspects of intelligent systems, the analogy with the biological brain has always been attractive, and has often had a dual function. On the one hand, it has been an effective source of inspiration for their design, whi...

  • Article
  • Open Access
10 Citations
4,643 Views
17 Pages

Algorithms for Bidding Strategies in Local Energy Markets: Exhaustive Search through Parallel Computing and Metaheuristic Optimization

  • Andrés Angulo,
  • Diego Rodríguez,
  • Wilmer Garzón,
  • Diego F. Gómez,
  • Ameena Al Sumaiti and
  • Sergio Rivera

16 September 2021

The integration of different energy resources from traditional power systems presents new challenges for real-time implementation and operation. In the last decade, a way has been sought to optimize the operation of small microgrids (SMGs) that have...

  • Article
  • Open Access
7 Citations
5,318 Views
18 Pages

UFaceNet: Research on Multi-Task Face Recognition Algorithm Based on CNN

  • Huoyou Li,
  • Jianshiun Hu,
  • Jingwen Yu,
  • Ning Yu and
  • Qingqiang Wu

15 September 2021

With the application of deep convolutional neural networks, the performance of computer vision tasks has been improved to a new level. The construction of a deeper and more complex network allows the face recognition algorithm to obtain a higher accu...

  • Article
  • Open Access
14 Citations
6,187 Views
25 Pages

A New Constructive Heuristic Driven by Machine Learning for the Traveling Salesman Problem

  • Umberto Junior Mele,
  • Luca Maria Gambardella and
  • Roberto Montemanni

14 September 2021

Recent systems applying Machine Learning (ML) to solve the Traveling Salesman Problem (TSP) exhibit issues when they try to scale up to real case scenarios with several hundred vertices. The use of Candidate Lists (CLs) has been brought up to cope wi...

  • Article
  • Open Access
2 Citations
2,733 Views
26 Pages

QB4MobOLAP: A Vocabulary Extension for Mobility OLAP on the Semantic Web

  • Irya Wisnubhadra,
  • Safiza Kamal Baharin,
  • Nurul A. Emran and
  • Djoko Budiyanto Setyohadi

13 September 2021

The accessibility of devices that track the positions of moving objects has attracted many researchers in Mobility Online Analytical Processing (Mobility OLAP). Mobility OLAP makes use of trajectory data warehousing techniques, which typically includ...

  • Article
  • Open Access
4 Citations
2,522 Views
22 Pages

13 September 2021

In order to solve the problem of traffic congestion and emission optimization of urban multi-class expressways, a robust dynamic nondominated sorting multi-objective genetic algorithm DFCM-RDNSGA-III based on density fuzzy c-means clustering method i...

  • Article
  • Open Access
3 Citations
2,657 Views
19 Pages

9 September 2021

High parking accuracy, comfort and stability, and fast response speed are important indicators to measure the control performance of a fully automatic operation system. In this paper, aiming at the problem of low accuracy of the fully automatic opera...

  • Article
  • Open Access
7 Citations
4,525 Views
16 Pages

Sequential Recommendation through Graph Neural Networks and Transformer Encoder with Degree Encoding

  • Shuli Wang,
  • Xuewen Li,
  • Xiaomeng Kou,
  • Jin Zhang,
  • Shaojie Zheng,
  • Jinlong Wang and
  • Jibing Gong

31 August 2021

Predicting users’ next behavior through learning users’ preferences according to the users’ historical behaviors is known as sequential recommendation. In this task, learning sequence representation by modeling the pairwise relationship between items...

  • Article
  • Open Access
10 Citations
4,667 Views
17 Pages

Solving the Two Echelon Vehicle Routing Problem Using Simulated Annealing Algorithm Considering Drop Box Facilities and Emission Cost: A Case Study of Reverse Logistics Application in Indonesia

  • Marco Reinaldi,
  • Anak Agung Ngurah Perwira Redi,
  • Dio Fawwaz Prakoso,
  • Arrie Wicaksono Widodo,
  • Mochammad Rizal Wibisono,
  • Agus Supranartha,
  • Rahmad Inca Liperda,
  • Reny Nadlifatin,
  • Yogi Tri Prasetyo and
  • Sekar Sakti

30 August 2021

A two echelon distribution system is often used to solve logistics problems. This study considers a two-echelon distribution system in reverse logistics context with the use of drop box facility as an intermediary facility. An optimization model of i...

  • Article
  • Open Access
7 Citations
3,241 Views
14 Pages

30 August 2021

Feature selection is crucial to the credit-scoring process, allowing for the removal of irrelevant variables with low predictive power. Conventional credit-scoring techniques treat this as a separate process wherein features are selected based on imp...

  • Article
  • Open Access
9 Citations
3,329 Views
20 Pages

30 August 2021

Current segmentation methods have limitations for multi-source heterogeneous iris segmentation since differences of acquisition devices and acquisition environment conditions lead to images of greatly varying quality from different iris datasets. Thu...

  • Article
  • Open Access
3 Citations
3,085 Views
13 Pages

30 August 2021

In hybrid mixed-flow workshop scheduling, there are problems such as mass production, mass manufacturing, mass assembly and mass synthesis of products. In order to solve these problems, combined with the Spark platform, a hybrid particle swarm algori...

  • Article
  • Open Access
13 Citations
4,744 Views
12 Pages

29 August 2021

Clustering is an unsupervised machine learning method with many practical applications that has gathered extensive research interest. It is a technique of dividing data elements into clusters such that elements in the same cluster are similar. Cluste...

  • Article
  • Open Access
72 Citations
9,310 Views
14 Pages

28 August 2021

Aiming at the problems of inefficient detection caused by traditional manual inspection and unclear features in metal surface defect detection, an improved metal surface defect detection technology based on the You Only Look Once (YOLO) model is pres...

  • Article
  • Open Access
8 Citations
3,116 Views
14 Pages

An Algebraic Approach to Identifiability

  • Daniel Gerbet and
  • Klaus Röbenack

27 August 2021

This paper addresses the problem of identifiability of nonlinear polynomial state-space systems. Such systems have already been studied via the input-output equations, a description that, in general, requires differential algebra. The authors use a d...

  • Article
  • Open Access
5 Citations
3,164 Views
19 Pages

27 August 2021

With the further development of the automotive industry, the traditional vibration isolation method is difficult to meet the requirements for wide frequency bands under multiple operating conditions, the active control mount (ACM) is gradually paid a...

  • Article
  • Open Access
1 Citations
3,622 Views
19 Pages

24 August 2021

Many combinatorial optimization problems are often considered intractable to solve exactly or by approximation. An example of such a problem is maximum clique, which—under standard assumptions in complexity theory—cannot be solved in sub-exponential...

  • Article
  • Open Access
11 Citations
3,674 Views
22 Pages

24 August 2021

Construction labor productivity (CLP) is affected by various interconnected factors, such as crew motivation and working conditions. Improved CLP can benefit a construction project in many ways, such as a shortened project life cycle and lowering pro...

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Algorithms - ISSN 1999-4893