Efficient And Accurate Systems For Querying Unstructured Data

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Efficient And Accurate Systems For Querying Unstructured Data

Efficient And Accurate Systems For Querying Unstructured Data written by Daniel Kang and has been published by this book supported file pdf, txt, epub, kindle and other format this book has been release on 2022 with categories.

Volumes of unstructured, non-tabular data (e.g., videos, audio, and text) have been increasing exponentially. This data is exciting to scientific researchers, business analysts, and data scientists for downstream analyses. For example, video can be used by urban planners to analyze traffic, ecologists to understand hummingbird-bacteria microcosms, and data scientists to analyze customer behavior in stores. However, this is impossible to do manually at scale: exabytes of data are generated per day, outstripping manual processing capacity. In recent years, automatic analysis over this unstructured data has become possible via machine learning (ML). Analysts can use ML to extract structured information from these unstructured sources, such as object types and location from a video. The structured information can subsequently be used in downstream analysis, e.g., the urban planner can count the number of cars that passed by an intersection. Unfortunately, using ML for these analyses is challenging. Deploying ML is prohibitively expensive for many organizations: naively analyzing a year of video from a small town can cost millions in cloud compute credits. ML methods are also unreliable, returning incorrect results, which can lead to downstream errors. Finally, deploying ML for analytics requires knowledge of deep learning, data systems, programming, and other technical skills. In light of these challenges, we make two observations: many applications can tolerate approximations, if there are guarantees on accuracy, and methods for answering unstructured data queries range by up to 10 orders of magnitude in cost. In this dissertation, we develop systems and algorithms for efficient and reliable unstructured data analytics, leveraging the two observations. Instead of returning exact answers, we return approximate answers generated by cheap approximations to expensive ML methods. Our systems can return statistically valid answers on a wide range of query types, including selection, aggregation, and limit queries. Furthermore, our systems can be up to orders of magnitude cheaper than standard methods of answering queries. We further develop systems for monitoring and quality assurance over ML pipelines. In addition to being deployed for analytics, ML is increasingly being deployed in mission-critical settings, such as in autonomous vehicles. Despite being deployed in these settings, models are often unmonitored and the training data is often not vetted. To address this, we propose abstractions for monitoring and quality assurance of ML deployments: model assertions and learned observation assertions. These assertions allow domain experts to specify errors, both at deployment time and over the data used to train these models. Assertions can find errors with both high recall (75%) and high precision (100%) in real-world autonomous vehicle, video analytics, and medical datasets. The systems and abstractions in this dissertation have been deployed in a variety of real-world settings, including for autonomous vehicles and ecological analysis.

Principles Of Database Query Processing For Advanced Applications

Principles Of Database Query Processing For Advanced Applications written by Clement T. Yu and has been published by Morgan Kaufmann this book supported file pdf, txt, epub, kindle and other format this book has been release on 1998 with Computers categories.

A thorough presentation of query processing techniques in a broad range of database systems for advanced applications. Provides the most effective query processing techniques and ways to optimize the information retrieval process. Intended for database systems designers creating advanced applications.

Storage And Retrieval For Still Image And Video Databases

Storage And Retrieval For Still Image And Video Databases written by and has been published by this book supported file pdf, txt, epub, kindle and other format this book has been release on 1999 with Database management categories.

Proceedings Of The Acm Sigcomm Internet Measurement Conference

Proceedings Of The Acm Sigcomm Internet Measurement Conference written by and has been published by this book supported file pdf, txt, epub, kindle and other format this book has been release on 2006 with Internet categories.

Dissertation Abstracts International

Dissertation Abstracts International written by and has been published by this book supported file pdf, txt, epub, kindle and other format this book has been release on 2008 with Dissertations, Academic categories.

Multimedia Systems And Applications

Multimedia Systems And Applications written by and has been published by this book supported file pdf, txt, epub, kindle and other format this book has been release on 2005 with Computer networks categories.

Cost Effective Strategies For Client Server Systems

Cost Effective Strategies For Client Server Systems written by Bernard H. Boar and has been published by this book supported file pdf, txt, epub, kindle and other format this book has been release on 1996 with Business & Economics categories.

Is a client/server system in your company's future? This book will help you evaluate the feasibility of a client/server system in your organization and offer tips for presenting your recommendations to corporate management. Includes templates and guidelines for planning and budgeting a system, cost/benefit analysis, and tools for implementing, evaluating, and enhancing the system.

Proceedings Of The International Conference On Information And Knowledge Management

Proceedings Of The International Conference On Information And Knowledge Management written by and has been published by this book supported file pdf, txt, epub, kindle and other format this book has been release on 2005 with Database management categories.

Proceedings Of International Conference On Information Communications And Signal Processing

Proceedings Of International Conference On Information Communications And Signal Processing written by and has been published by this book supported file pdf, txt, epub, kindle and other format this book has been release on 2003 with Digital communications categories.

Cikm 05

Cikm 05 written by Abdur Chowdhury and has been published by this book supported file pdf, txt, epub, kindle and other format this book has been release on 2005 with Database design categories.