Global ETD Search
Search theses and dissertations gathered from participating repositories worldwide. Every result links back to the library that holds it. No account is needed.
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Showing 1 to 20 of 2294 for “"data sets"”.
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Concept Identification for Complex Data Sets
Large and complex data sets play an essential role in many engineering and computer science applications. Revealing structures within data sets, such as groups of similar data samples or correlations between feature values, is often desirable. But generating such insights is far from trivial. The …
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Efficient structure search in large data sets
… there has been rapid increase in the amount of data being generated and published; therefore there is an emerging need for efficiently managing and processing large data sets. Among the existing problems, structure search is an important topic with many real applications, such as substructure …
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Shape Identication and Ranking in Temporal Data Sets
… through pattern matching and other data mining techniques, but ideas combining the identification and comparison of shapes have received less attention. This dissertation fills the gap by presenting a set of shapes and their attributes, by which they can be identified, compared, and …
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Data cleaning techniques for software engineering data sets
Data quality is an important issue which has been addressed and recognised in research communities such as data warehousing, data mining and information systems. It has been agreed that poor data quality will impact the quality of results of analyses and that it will therefore impact on decisions …
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Mining LEGO data sets to support LEGO design
… could be put up together to build creative LEGO sets of different themes, such as a Volkswagen T1 Camper Van model (in ``Sculpture"" theme) or The Simpsons House model (in ``Town"" theme). LEGO accompanies nearly everyone from youth to adulthood. The age groups of fans range from kids in …
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Interactive visualization framework for space plasma data sets
The capability of visualizing numerical data sets to graphs is imperative to our understanding of space physics. However, traditional visualization tools used in the space science community are either proprietary, lack portability or require paid license subscriptions. Therefore we are attempting …
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Decision tree classifiers for incident call data sets
… the Information technology incident calls database of an oil and gas company as a case study. The approach was to explore the Information technology incident descriptions and their assigned subjects; thereafter the correctly-assigned records were used for training decision tree …
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Time-series analysis of multivariate manufacturing data sets
Thesis (M. Eng.)--Massachusetts Institute of Technology, Dept. of Electrical Engineering and Computer Science, 1996.
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OPTIMAL SUBSEQUENCE BIJECTION AND CLASSIFICATION OF IMBALANCED DATA SETS
… To address the problem of noisy time series data we propose using an algorithm that determines the optimal subsequence bijection (OSB) of a query and target time series. The OSB is efficiently computed since the problem’s solution is mapped to a cheapest path in a DAG (directed acyclic …
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One-pass algorithms for large and shifting data sets
… with the problem of ever-increasing amounts of data. Examples include the UniProt database of proteins which now contains ~6 million sequences, and the KDD ’99 data which consists of ~5 million points. At these scales, the state-of-the-art machine learning techniques are not applicable since the …
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Practical methods for data mining with massive data sets
The increasing size of data sets has necessitated advancement in exploratory techniques. Methods that are practical for moderate to small data sets become infeasible when applied to massive data sets. Advanced techniques such as binned kernel density estimation, tours, and mode-based projection …
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Processing strategies for functional magnetic resonance imaging data sets
Thesis (Ph.D.)--Harvard--Massachusetts Institute of Technology Division of Health Sciences and Technology, 1999.
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Modeling data sets using a continuum of beta distributions
Thesis (S.M.)--Massachusetts Institute of Technology, Dept. of Electrical Engineering and Computer Science, 2000.
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Federating data sets for use in a map context
The goal of this project is to federate data sets containing location information such that they can be used in a map context. There are numerous examples of these data sets around the MIT campus: asset data with the Property Office, equipment data with Facilities, ShuttleTrack data, student/staff …
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Visual exploratory analysis of large data sets : evaluation and application
Large data sets are difficult to analyze. Visualization has been proposed to assist exploratory data analysis (EDA) as our visual systems can process signals in parallel to quickly detect patterns. Nonetheless, designing an effective visual analytic tool remains a challenge. This challenge is …
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Mining, Indexing and Similarity Search in Large Graph Data Sets
… may significantly deepen the understanding of data mining principles in structural pattern discovery, interpretation and search. The formulation of a general graph information system through this study could provide fundamental supports to graph-intensive applications in multiple domains.
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Data relocation and prefetching for programs with large data sets
… loop structures that process large arrays of data. The execution of these loop structures often produces memory preference patterns that poorly utilize data caches. Limited associativity and cache capacity result in cache conflict misses. Also, non-unit stride access patterns can cause low …
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Automatic detection of periodic sources in the K2 data sets
… for the detection of periodic sources in the K2 data sets. Fast discreet Fourier transformations are used to compute the Fourier spectra of the targets and two different detection algorithms for identifying significant signals are used. The first technique searches through the DFT to identify …
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