Graph database outperforms in filtering ESG stocks efficiently.
problem Efficiently filtering ESG stocks from large lists of equities.
method Compared SQL, No-SQL, and graph databases; used Python for database interactions; collected data from stock price and financial news.
result Graph database is more efficient for ESG stock filtering.
LIFT uses demonstrations to train reinforcement learning controllers for data management tasks.
problem Large training data requirements, algorithmic instability, and lack of standard tools in reinforcement learning for data management.
method LIFT combines human demonstrations with deep reinforcement learning and TensorForce library.
result LIFT controllers trained from demonstrations outperform human baselines and heuristics in database and stream processing tasks.
Paper proposes a method to predict optimal data partitioning based on query execution costs.
problem Finding optimal data partitioning for improved system performance and scalability.
method Formal model abstraction of workload queries, genetic algorithm for optimization, evaluation using PostgreSQL's query optimizer.
result The approach effectively reduces workload execution cost and improves system performance.
Hand-held system translates foreign menus for diet management.
problem Translation ambiguities and context-specific information for diet management.
method Portable multimedia device, machine translation, context-specific corpora, pre-processing steps, multimedia information.
result Higher accuracy and instant translations compared to Google Translate.
Tool to estimate research impact for low-resource institutions.
problem Costly databases limit access for third-world institutions.
method Machine Learning for data analysis and panel regression.
result Approximation of SCOPUS Impact Factor for free.
The study examines stock splits and their effects on companies, managers, and shareholders.
problem Misunderstandings and confounding factors around stock splits and their impacts.
method Selected database analysis of nine recent events, examining market impact, trading volume, and shareholder base.
result Stock splits enhance trading volume, increase shareholder base, and improve market liquidity.
FLAME efficiently matches high-dimensional categorical datasets for causal inference.
problem Matching treatment and control units based on covariate information in causal inference.
method FLAME learns a distance metric using a hold-out training set and uses query processing techniques for large datasets.
result FLAME achieves significantly better performance than other matching methods, scaling to huge datasets.
RLCache uses reinforcement learning to optimize cache management decisions.
problem Optimizing cache hit rate and storage size in computer systems.
method Designing three reinforcement learning agents for cache manager tasks and two advanced architectures.
result Reinforcement learning agents achieve higher cache hit rates and minimize storage space compared to heuristics.
Biotech startups are found to be similar to tech startups overall.
problem The uniqueness of biotech startups was previously overemphasized.
method Extensive research from new databases analyzed similarities and differences.
result Biotech startups share similarities in venture capital, exit time, and geography with tech startups.
Deep learning enhances financial asset management through new models and data sources.
problem Improving portfolio performance and price forecasting accuracy in financial asset management.
method Systematic review using Scopus database, focusing on deep learning applications in financial asset management from 2018 to 2023.
result Deep learning models show promise in enhancing portfolio performance and price forecasting accuracy.
Scales gradual pattern discovery from imprecise data.
problem Managing large collections of gradual patterns from imprecise data.
method Introduces gradualness thresholds and considers attribute value distribution.
result Eliminates noise patterns, showing a smaller set of meaningful patterns.
A main challenge of data-driven sciences is how to make maximal use of the progressively expanding databases of experimental datasets in order to keep research cumulative. We introduce the idea of a modeling-based dataset retrieval engine designed for relating a researcher's experimental dataset to earlier work in the …
Energy is a limited resource which has to be managed wisely, taking into account both supply-demand matching and capacity constraints in the distribution grid. One aspect of the smart energy management at the building level is given by the problem of real-time detection of flexible demand available. In this paper we pr…
Paper presents a data preprocessing method for PHM models.
problem Lack of consistent data preprocessing for PHM applications.
method Comprehensive pipeline for sensor data preprocessing.
result Creation of clean data sets for training machinery health state classifiers.
Aligns databases with Gaussian features using MAP estimation and thresholding.
problem Aligning databases with jointly Gaussian features.
method Two algorithms: MAP estimation and thresholding of log likelihood ratios.
result Conditions on mutual information for reliable performance of algorithms.
Face recognition system trained with noisy labels.
problem Label noise in training deep learning classifiers.
method Review and apply recent methods to manage noisy annotations.
result Improved performance of face recognition system with noisy labels.
Performance of investment managers are evaluated in comparison with benchmarks, such as financial indices. Due to the operational constraint that most professional databases do not track the change of constitution of benchmark portfolios, standard tests of performance suffer from the "look-ahead benchmark bias," when t…
Study tackles database variability in medical data using ensemble models and CNNs.
problem Achieving robust generalization in machine learning models across multiple medical databases.
method Ensemble of local models based on convolutional neural networks (CNNs) and various data preprocessing techniques.
result Improved inter-database generalization performance and scalability of models.
Database of Irish parliamentary speeches from 1919-2013.
problem Storing and analyzing historical parliamentary debates.
method Downloaded speeches from official website, processed, parsed, and matched with TD and minister data.
result 4.5 million speeches from 1,178 TDs in a single database.
Study connects database alignment and planted matching using Gaussian features.
problem Identify matching between correlated user features in anonymized databases.
method Derived results for database alignment and planted matching, showing connections and thresholds.
result Performance thresholds for database alignment converge to planted matching when feature dimensionality is sufficiently high.
Geometric Brownian motion simulates stock prices for Brazilian small caps index.
problem Simulating stock prices for the Brazilian small caps index.
method Used geometric Brownian motion to simulate stock prices of Brazilian small caps index using historical data.
result Simulated prices better for portfolios with higher returns, lower risks, and higher Sharpe Indexes.
This work applies SQL to deep learning, leveraging database techniques.
problem Applying deep learning techniques to databases.
method Expressing deep learning operations using SQL, a multidimensional array language.
result Demonstrates the feasibility of using SQL for deep learning operations.
Study compares CDS databases and finds discrepancies due to various factors.
problem Comparing discrepancies among CDS databases.
method Comparing five major sources of corporate CDS prices over 2004-2010.
result CMA quotes lead price discovery and databases disagree on stock-CDS return analysis.
CwA optimizes search performance by jointly learning a balanced database partition and a neural probing function.
problem Suboptimal search performance due to mismatched database and query distributions.
method CwA jointly learns a balanced database partition and a neural probing function to optimize search performance directly for the query distribution.
result CwA achieves up to 4.7x throughput over state-of-the-art methods at equal recall.
PyODDS is a Python system for outlier detection in databases.
problem Outlier detection in databases for various users.
method End-to-end Python system with database support, including statistical and deep learning algorithms.
result Supports outlier detection algorithms for users with or without machine learning background.
Taxonomies of cryptocurrencies and comparisons with fiat money and databases.
problem Comparing cryptocurrencies, fiat money, and databases.
method Taxonomy creation and comparison analysis.
result Cryptocurrencies and databases have unique characteristics not found in fiat money.
Bayesian entity resolution merges together multiple, noisy databases and returns the minimal collection of unique individuals represented, together with their true, latent record values. Bayesian methods allow flexible generative models that share power across databases as well as principled quantification of uncertain…
Automated system identifies and counts insects from images.
problem Manual sorting and identification of insect samples is time-consuming and limits biodiversity mapping.
method Robot-enabled image-based identification machine using CNNs.
result Classification accuracy of 0.980 for initial dataset. Paper proposes an anomaly detection system for DBMS diagnosis.
problem Difficulty in detecting anomalies in DBMS due to increasing metrics.
method Uses deep autoencoder and statistical process control for anomaly detection, and time series similarity for event finding.
result Demonstrates effectiveness of the proposed model in detecting anomalies and finding related events.
A new asynchronous distributed EM algorithm for massive data.
problem Time-consuming E step in EM algorithms for massive data.
method Asynchronous and distributed EM (DEM) algorithm.
result Significantly faster than competing EM-type algorithms.
Paper improves text-to-SQL translation by encoding schema relations with self-attention.
problem Improving text-to-SQL translation accuracy across diverse databases.
method Uses relation-aware self-attention to encode schema information.
result Significant gains on Spider dataset (42.94% exact match accuracy).
Graph Neural Networks improve machine learning on relational databases.
problem Training machine learning models on relational databases requires costly data extraction and feature engineering.
method Uses Graph Neural Networks to extract features from relational databases.
result Outperforms state-of-the-art automatic feature engineering methods.
Paper presents a new Wi-Fi RSS and geomagnetic field database for indoor localization and trajectory estimation.
problem Indoor localization and trajectory estimation challenges.
method Convolutional neural network (CNN) for RSS data and LSTM network for geomagnetic field intensity.
result CNN and LSTM networks show feasibility for localization and trajectory estimation.
New deep learning method validated across multiple sleep staging databases.
problem Improving automatic sleep scoring accuracy across different datasets.
method Ensemble of local models using deep learning for automatic sleep staging.
result Good general performance compared to human experts and state-of-the-art methods.
EERN uses deep learning for relational databases, outperforming other methods.
problem Deep learning for relational databases.
method Equivariant Entity-Relationship Network (EERN) using MLP equivariant to Entity-Relationship model symmetries.
result EERN outperforms other methods in synthetic and real-data experiments.
New method protects privacy while allowing accurate statistical inference from synthetic data.
problem Ensuring privacy in database release while maintaining statistical utility.
method Kernel mean embedding with differential privacy constraints.
result Consistent estimators of population statistics can be constructed while protecting individual privacy.
Extends Aff-Wild database for affect recognition in real-world settings.
problem Complex human emotional states in real-world settings.
method Developed deep neural architectures with attention mechanism for emotion recognition.
result Improved performance in emotion recognition using Aff-Wild2.
Predicting blood lactate levels helps manage ICU patients without invasive tests.
problem Predict blood lactate levels accurately in ICU patients without invasive tests.
method Defined a benchmark problem, evaluated different prediction algorithms, and investigated missing value imputation methods.
result Promising prediction results show the potential of machine learning in ICU care.
Transfer learning improves handwriting recognition in small datasets.
problem Reduced training datasets for handwriting text recognition.
method Transfer learning from a larger database to a smaller one, focusing on retraining the whole CNNLSTM-CTC model.
result Significant improvement in character error rate (CER) with transfer learning, reducing CER from 18.2% to 3.3%.
Deep learning detects anomalies in SAP HANA KPIs.
problem Detecting problems in high-dimensional KPIs from DBMSs.
method Two complementary DL approaches: temporal and spatial learning.
result Experimental results confirm the effectiveness of the system and models.
New vector quantization method reduces relevance of parallel components in database points.
problem Scaling maximum inner product search to massive databases.
method Developed anisotropic vector quantization loss functions.
result Achieves state-of-the-art results on public benchmarks.
New RL method handles hidden actions in offline learning.
problem Learning from unseen actions in real-world RL datasets.
method LURE (Learning from the Unseen: Robust Estimator) method using next-state variable as proxy.
result Valid statistical inference and improved RL conclusions with hidden actions.
We study the distribution of fluctuations over a time scale Δt (i.e., the returns) of the S&P 500 index by analyzing three distinct databases. Database (i) contains approximately 1 million records sampled at 1 min intervals for the 13-year period 1984-1996, database (ii) contains 8686 daily records for the 35-year pe…
The multiple fundamental frequency detection problem and the source separation problem from a single-channel signal containing multiple oscillatory components and a nonstationary noise are both challenging tasks. To extract the fetal electrocardiogram (ECG) from a single-lead maternal abdominal ECG, we face both challe…
Topology-based information retrieval improves query accuracy.
problem Query accuracy in databases with complex structures.
method Dilation-invariant comparative measures of persistent homology.
result Topology-based retrieval outperforms standard methods.
The study analyzes the accuracy of quantile estimators in risk assessment using tail models.
problem Accurately assessing high quantiles in risk management with unknown distributions and sparse data.
method Used generalized Pareto distribution to model tail risks and calculated quantiles with finite sample bias and variance analysis.
result Determined the finite sample distribution function and bias/variance of quantile estimators.
A statistical algorithm for categorizing different types of matches and fraud in image databases is presented. The approach is based on a generative model of a graph representing images and connections between pairs of identities, trained using properties of a matching algorithm between images.
A new algorithm uses bandits to diversify database activity monitoring.
problem Limitation of current DAM systems in collecting diverse data.
method Redefined DAM sampling as a bandit problem and developed a novel algorithm combining expert knowledge and random exploration.
result Adding diversity to sampling using the bandit-based approach improves coverage without decreasing alert quality.