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Data mining techniques have been widely used in various applications. Binary search tree based frequent items is an effective method for automatically recognize the most frequent items, least frequent items and average frequent items. This…

Databases · Computer Science 2013-07-30 P Vasanth Sena

We propose a novel crowd counting approach that leverages abundantly available unlabeled crowd imagery in a learning-to-rank framework. To induce a ranking of cropped images , we use the observation that any sub-image of a crowded scene…

Computer Vision and Pattern Recognition · Computer Science 2018-03-09 Xialei Liu , Joost van de Weijer , Andrew D. Bagdanov

The discovery of new and interesting patterns in large datasets, known as data mining, draws more and more interest as the quantities of available data are exploding. Data mining techniques may be applied to different domains and fields…

Software Engineering · Computer Science 2012-09-17 Mehdi Adda , Lei Wu , Sharon White , Yi Feng

Anomaly detection research works generally propose algorithms or end-to-end systems that are designed to automatically discover outliers in a dataset or a stream. While literature abounds concerning algorithms or the definition of metrics…

Networking and Internet Architecture · Computer Science 2022-11-21 Jose Manuel Navarro , Alexis Huet , Dario Rossi

This paper presents a study of the characteristics of transactional databases used in frequent itemset mining. Such characterizations have typically been used to benchmark and understand the data mining algorithms working on these…

Databases · Computer Science 2020-11-10 Christian Lezcano , Marta Arias

The mainstream crowd counting methods regress density map and integrate it to obtain counting results. Since the density representation to one head accords to its adjacent distribution, it embeds the same category objects with variant…

Computer Vision and Pattern Recognition · Computer Science 2022-12-06 Qi Wang , Juncheng Wang , Junyu Gao , Yuan Yuan , Xuelong Li

Models of crowdsourcing and human computation often assume that individuals independently carry out small, modular tasks. However, while these models have successfully shown how crowds can accomplish significant objectives, they can…

Computers and Society · Computer Science 2023-09-04 David T. Lee , Christos A. Makridis

Crowdsourced entity extraction is often used to acquire data for many applications, including recommendation systems, construction of aggregated listings and directories, and knowledge base construction. Current solutions focus on entity…

Databases · Computer Science 2015-02-25 Theodoros Rekatsinas , Amol Deshpande , Aditya Parameswaran

Entity resolution (ER) is the task of identifying all records in a database that refer to the same underlying entity, and are therefore duplicates of each other. Due to inherent ambiguity of data representation and poor data quality, ER is…

Databases · Computer Science 2017-02-07 Arya Mazumdar , Barna Saha

Hybrid human/computer systems promise to greatly expand the usefulness of query processing by incorporating the crowd for data gathering and other tasks. Such systems raise many database system implementation questions. Perhaps most…

Databases · Computer Science 2012-02-13 Beth Trushkowsky , Tim Kraska , Michael J. Franklin , Purnamrita Sarkar

The process of gathering ground truth data through human annotation is a major bottleneck in the use of information extraction methods for populating the Semantic Web. Crowdsourcing-based approaches are gaining popularity in the attempt to…

Human-Computer Interaction · Computer Science 2022-09-21 Anca Dumitrache , Oana Inel , Benjamin Timmermans , Carlos Ortiz , Robert-Jan Sips , Lora Aroyo , Chris Welty

Crowdsourcing is widely used to create data for common natural language understanding tasks. Despite the importance of these datasets for measuring and refining model understanding of language, there has been little focus on the…

Computation and Language · Computer Science 2021-06-03 Nikita Nangia , Saku Sugawara , Harsh Trivedi , Alex Warstadt , Clara Vania , Samuel R. Bowman

Big data have the characteristics of enormous volume, high velocity, diversity, value-sparsity, and uncertainty, which lead the knowledge learning from them full of challenges. With the emergence of crowdsourcing, versatile information can…

Machine Learning · Computer Science 2022-06-22 Jing Zhang

Collections of research article data harvested from the web have become common recently since they are important resources for experimenting on tasks such as named entity recognition, text summarization, or keyword generation. In fact,…

Information Retrieval · Computer Science 2022-05-24 Erion Çano , Benjamin Roth

Crowdsourcing works by distributing many small tasks to large numbers of workers, yet the true potential of crowdsourcing lies in workers doing more than performing simple tasks---they can apply their experience and creativity to provide…

Social and Information Networks · Computer Science 2017-08-16 Thomas C. McAndrew , Elizaveta A. Guseva , James P. Bagrow

Crowd-sourcing is a cheap and popular means of creating training and evaluation datasets for machine learning, however it poses the problem of `truth inference', as individual workers cannot be wholly trusted to provide reliable…

Machine Learning · Computer Science 2019-02-26 Yuan Li , Benjamin I. P. Rubinstein , Trevor Cohn

This paper discusses how crowd and machine classifiers can be efficiently combined to screen items that satisfy a set of predicates. We show that this is a recurring problem in many domains, present machine-human (hybrid) algorithms that…

Information Retrieval · Computer Science 2019-04-02 Evgeny Krivosheev , Fabio Casati , Marcos Baez , Boualem Benatallah

We raise and define a new crowdsourcing scenario, open set crowdsourcing, where we only know the general theme of an unfamiliar crowdsourcing project, and we don't know its label space, that is, the set of possible labels. This is still a…

Human-Computer Interaction · Computer Science 2021-11-09 Guangyang Han , Guoxian Yu , Lei Liu , Lizhen Cui , Carlotta Domeniconi , Xiangliang Zhang

Crowd counting is to estimate the number of objects (e.g., people or vehicles) in an image of unconstrained congested scenes. Designing a general crowd counting algorithm applicable to a wide range of crowd images is challenging, mainly due…

Computer Vision and Pattern Recognition · Computer Science 2019-09-10 Haoyue Bai , Song Wen , S. -H. Gary Chan

In many applications that involve processing high-dimensional data, it is important to identify a small set of entities that account for a significant fraction of detections. Rather than formalize this as a clustering problem, in which all…

Artificial Intelligence · Computer Science 2018-05-09 Ferran Alet , Rohan Chitnis , Leslie P. Kaelbling , Tomas Lozano-Perez