migration pattern
Evolving Neural Networks Reveal Emergent Collective Behavior from Minimal Agent Interactions
Giardini, Guilherme S. Y., Hardy, John F. II, da Cunha, Carlo R.
Understanding the mechanisms behind emergent behaviors in multi-agent systems is critical for advancing fields such as swarm robotics and artificial intelligence. In this study, we investigate how neural networks evolve to control agents' behavior in a dynamic environment, focusing on the relationship between the network's complexity and collective behavior patterns. By performing quantitative and qualitative analyses, we demonstrate that the degree of network non-linearity correlates with the complexity of emergent behaviors. Simpler behaviors, such as lane formation and laminar flow, are characterized by more linear network operations, while complex behaviors like swarming and flocking show highly non-linear neural processing. Moreover, specific environmental parameters, such as moderate noise, broader field of view, and lower agent density, promote the evolution of non-linear networks that drive richer, more intricate collective behaviors. These results highlight the importance of tuning evolutionary conditions to induce desired behaviors in multi-agent systems, offering new pathways for optimizing coordination in autonomous swarms. Our findings contribute to a deeper understanding of how neural mechanisms influence collective dynamics, with implications for the design of intelligent, self-organizing systems.
Sluggish and Chemically-Biased Interstitial Diffusion in Concentrated Solid Solution Alloys: Mechanisms and Methods
Xu, Biao, Fu, Haijun, Huang, Shasha, Ma, Shihua, Xiong, Yaoxu, Zhang, Jun, Xiang, Xuepeng, Lu, Wenyu, Kai, Ji-Jung, Zhao, Shijun
Interstitial diffusion is a pivotal process that governs the phase stability and irradiation response of materials in non-equilibrium conditions. In this work, we study sluggish and chemically-biased interstitial diffusion in Fe-Ni concentrated solid solution alloys (CSAs) by combining machine learning (ML) and kinetic Monte Carlo (kMC), where ML is used to accurately and efficiently predict the migration energy barriers on-the-fly. The ML-kMC reproduces the diffusivity that was reported by molecular dynamics results at high temperatures. With this powerful tool, we find that the observed sluggish diffusion and the "Ni-Ni-Ni"-biased diffusion in Fe-Ni alloys are ascribed to a unique "Barrier Lock" mechanism, whereas the "Fe-Fe-Fe"-biased diffusion is influenced by a "Component Dominance" mechanism. Inspired by the mentioned mechanisms, a practical AvgS-kMC method is proposed for conveniently and swiftly determining interstitial-mediated diffusivity by only relying on the mean energy barriers of migration patterns. Combining the AvgS-kMC with the differential evolutionary algorithm, an inverse design strategy for optimizing sluggish diffusion properties is applied to emphasize the crucial role of favorable migration patterns.
Causal Models Applied to the Patterns of Human Migration due to Climate Change
Lai, Kenneth, Yanushkevich, Svetlana
The impacts of mass migration, such as crisis induced by climate change, extend beyond environmental concerns and can greatly affect social infrastructure and public services, such as education, healthcare, and security. These crises exacerbate certain elements like cultural barriers, and discrimination by amplifying the challenges faced by these affected communities. This paper proposes an innovative approach to address migration crises in the context of crisis management through a combination of modeling and imbalance assessment tools. By employing deep learning for forecasting and integrating causal reasoning via Bayesian networks, this methodology enables the evaluation of imbalances and risks in the socio-technological landscape, providing crucial insights for informed decision-making. Through this framework, critical systems can be analyzed to understand how fluctuations in migration levels may impact them, facilitating effective crisis governance strategies.
Data Scientist
You'll have access to tons of data, but you'll also be cursed with tons of noise. Most humans are good and amazing, so every bad behavior is hidden behind a swarm of good behavior. To identify the baddies, you will need to look for clues as to what is going on, to look for patterns, to ask intelligent questions and look for answers, to deal with uncertainty, to find the story behind the data, to turn the data into information. You'll need to be a detective. You will create new ML models and techniques and expand on the ones we have in production.
Artificial Intelligence Tracks The Migration of Birds -- AI Daily - Artificial Intelligence News
Each species of birds has a completely different and unique migration pattern. The majority of these birds fly north in the spring to breed in the temperature climates, or return in the autumn to wintering grounds in the south. However, it's not as clear cut as a pattern might indicate. With the heavy variety in bird species and the inevitable discovery of new ones as existing species crossbreed, migration patterns are expected to heavily change in the next decade. This is why artificial intelligence is becoming a powerful tool in recognizing these migration patterns - with its abilities to recognize the unique patterns of each species without falling ill to general conclusions. While many are in awe by artificial intelligence's vast capability in this sense, as it is able to store the migration information of each bird species successfully, these same individuals wonder on the significance of this knowledge.
Applying Computing Power to Track the Spread of Cancer
Metastasis is the migration of cancerous cells from a primary tumor to other anatomical sites. Although metastasis was long thought to result from monoclonal seeding, or single cellular migrations, recent phylogenetic analyses of metastatic cancers have reported complex patterns of cellular migrations between sites, including polyclonal migrations and reseeding. However, accurate determination of migration patterns from somatic mutation data is complicated by intratumor heterogeneity and discordance between clonal lineage and cellular migration. We introduce MACHINA, a multi-objective optimization algorithm that jointly infers clonal lineages and parsimonious migration histories of metastatic cancers from DNA sequencing data. MACHINA analysis of data from multiple cancers shows that migration patterns are often not uniquely determined from sequencing data alone and that complicated migration patterns among primary tumors and metastases may be less prevalent than previously reported.
Word on the tweet: 'Shazam for birds' app to launch in Spring
Just in time for spring, scientists hope to launch a'Shazam for birds' that will help people identify the tweets that are waking them up in the morning. The app, dubbed Warblr, claims to be able to recognise the song of 88 bird species, and could help track their migration patterns. Like Shazam, it works by recording nearby noises on smartphones to analyse it in real-time and identify the bird species according to its tweets. Just in time for spring, scientists hope to launch a'Shazam for birds' that will help people find out which birds are waking you up in the morning. Whenever the app identifies a bird, geo-tracking allows it to map which species is being spotted where and when, with the information made public.
Out of Africa thanks to climate change: Humans arrived in Europe up to 30,000 years earlier than believed
Modern humans first left Africa 100,000 years ago in a series of slow-paced migration waves and arrived in southern Europe around 80,000-90,000 years ago, far earlier than previously believed, according to a new study. The research suggests that humans spread out across the globe in four migration events driven by climate change, connected to variations in the Earth's orbit. The results challenge traditional models that suggest there was a single exodus out of Africa around 60,000 years ago. Chris Stringer, Research Leader in Human Origins at the Natural History Museum London told MailOnline the research is'the most comprehensive climate, vegetation and human-dispersal modelling study published so far'. 'While the earliest [migration] wave had only limited further penetration across the rest of Eurasia, they [the researchers] argue that modern humans could have arrived in small numbers in China and southern Europe by about 80,000 years,' he explained.