275 research outputs found
How Can We Have A Better Public Transportation System? –An Exploratory Agent Based Model
Public transportation plays an integral part in a city\u27s development, but transportation professionals disagree about whether it is feasible to increase the capacity of public transportation systems at a reasonable cost; and if it is, how. This study develops an agent based model that aims to answer this question and provide a framework to compare the effects of improvements in different aspects of the public transportation service. The results of this study show that it is possible to increase ridership enough to compensate for the increased operational cost, but only in certain circumstances. Interesting phenomenon that might have showed up in the real world arose in this model and are worth further investigation
The Environmental Impact of Plastic Waste
The pollution caused by disposable plastic products is becoming more and more serious, and “plastic limit” has become a global consensus. This article mainly discusses the pollution problem from the following aspects: Integrate all relevant important indicators to establish a multiple regression model of the maximum amount of disposable plastic waste to estimate the maximum amount of disposable waste in the future without causing further damage to the environment; Establish an environmental safety level evaluation model and analyze the impact of plastic waste on environmental safety; Try to set the lowest level target that can be achieved by global waste at this stage, and conduct correlation analysis on the impact of humans, enterprises, and the environment; Select several countries based on their comprehensive strengths, conduct a comparative analysis of their plastic production, economic strength, and environment, and try to explore their responsibilities
Understanding Derived Demand for Transportation to Support Electric Vehicle Recharging After Earthquake Events
Instruct-FinGPT: Financial Sentiment Analysis by Instruction Tuning of General-Purpose Large Language Models
Sentiment analysis is a vital tool for uncovering insights from financial
articles, news, and social media, shaping our understanding of market
movements. Despite the impressive capabilities of large language models (LLMs)
in financial natural language processing (NLP), they still struggle with
accurately interpreting numerical values and grasping financial context,
limiting their effectiveness in predicting financial sentiment. In this paper,
we introduce a simple yet effective instruction tuning approach to address
these issues. By transforming a small portion of supervised financial sentiment
analysis data into instruction data and fine-tuning a general-purpose LLM with
this method, we achieve remarkable advancements in financial sentiment
analysis. In the experiment, our approach outperforms state-of-the-art
supervised sentiment analysis models, as well as widely used LLMs like ChatGPT
and LLaMAs, particularly in scenarios where numerical understanding and
contextual comprehension are vital.Comment: FinLLM Symposium at IJCAI 202
Revisiting the Spatial and Temporal Modeling for Few-shot Action Recognition
Spatial and temporal modeling is one of the most core aspects of few-shot
action recognition. Most previous works mainly focus on long-term temporal
relation modeling based on high-level spatial representations, without
considering the crucial low-level spatial features and short-term temporal
relations. Actually, the former feature could bring rich local semantic
information, and the latter feature could represent motion characteristics of
adjacent frames, respectively. In this paper, we propose SloshNet, a new
framework that revisits the spatial and temporal modeling for few-shot action
recognition in a finer manner. First, to exploit the low-level spatial
features, we design a feature fusion architecture search module to
automatically search for the best combination of the low-level and high-level
spatial features. Next, inspired by the recent transformer, we introduce a
long-term temporal modeling module to model the global temporal relations based
on the extracted spatial appearance features. Meanwhile, we design another
short-term temporal modeling module to encode the motion characteristics
between adjacent frame representations. After that, the final predictions can
be obtained by feeding the embedded rich spatial-temporal features to a common
frame-level class prototype matcher. We extensively validate the proposed
SloshNet on four few-shot action recognition datasets, including
Something-Something V2, Kinetics, UCF101, and HMDB51. It achieves favorable
results against state-of-the-art methods in all datasets
E2Net: Resource-Efficient Continual Learning with Elastic Expansion Network
Continual Learning methods are designed to learn new tasks without erasing
previous knowledge. However, Continual Learning often requires massive
computational power and storage capacity for satisfactory performance. In this
paper, we propose a resource-efficient continual learning method called the
Elastic Expansion Network (E2Net). Leveraging core subnet distillation and
precise replay sample selection, E2Net achieves superior average accuracy and
diminished forgetting within the same computational and storage constraints,
all while minimizing processing time. In E2Net, we propose Representative
Network Distillation to identify the representative core subnet by assessing
parameter quantity and output similarity with the working network, distilling
analogous subnets within the working network to mitigate reliance on rehearsal
buffers and facilitating knowledge transfer across previous tasks. To enhance
storage resource utilization, we then propose Subnet Constraint Experience
Replay to optimize rehearsal efficiency through a sample storage strategy based
on the structures of representative networks. Extensive experiments conducted
predominantly on cloud environments with diverse datasets and also spanning the
edge environment demonstrate that E2Net consistently outperforms
state-of-the-art methods. In addition, our method outperforms competitors in
terms of both storage and computational requirements
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