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Related Concept Videos

Methods of Documentation IV: Focus Charting01:26

Methods of Documentation IV: Focus Charting

Focus Charting, also known as the focus charting system or "focus documentation," is a systematic documentation approach used in healthcare to organize patient information in medical records.
It typically involves three columns for recording information:
Methods of Documentation II: POMR01:26

Methods of Documentation II: POMR

The Problem-Oriented Medical Record (POMR) revolutionized medical record-keeping by introducing a systematic approach focusing on the patient's problems rather than merely listing symptoms. Dr. Lawrence Weed's introduction of this method in the 1960s marked a significant advancement in medical documentation. The POMR framework consists of four key components: the database, problem list, plan of care, and progress notes.
Histogram01:05

Histogram

The histogram is a graphical representation in the x-y form of data distribution in a data set. The horizontal x-axis is labeled with what the data represents (for instance, distance from your home to school). The vertical y-axis is labeled either frequency or relative frequency (or percent frequency or probability).
A histogram graph consists of contiguous (adjoining) boxes. The heights of the bars correspond to frequency values. The graph will have the same shape with respective labels. The...
Multi-species Conserved Sequences02:51

Multi-species Conserved Sequences

Next-generation sequencing technologies have created large genomic databases of a variety of animals and plants. Ever since the human genome project was completed, scientists studied the genome of primates, mammals, and other phylogenetically distant living beings. Such large-scale  studies have provided new insights into the evolutionary relationship between organisms.
Although the genome of each species varies greatly from each other, a few sequences are highly conserved. Such conserved DNA...
pV-Diagrams01:18

pV-Diagrams

The pV diagram, which is a graph of pressure versus volume of the gas under study, is helpful in describing certain aspects of the substance. When the substance behaves like an ideal gas, the ideal gas equation describes the relationship between its pressure and volume. On a pV diagram, it is common to plot an isotherm, which is a curve showing p as a function of V with the number of molecules and the temperature fixed. Then, for an ideal gas, the product of the pressure of the gas and its...
Imaging Biological Samples with Optical Microscopy01:18

Imaging Biological Samples with Optical Microscopy

Optical microscopy uses optic principles to provide detailed images of samples. Antonie van Leeuwenhoek designed the first compound optical microscope in the 17th century to visualize blood cells, bacteria, and yeast cells. In 1830, Joseph Jackson Lister created an essentially modern light microscope. The 20th century saw the development of microscopes with enhanced magnification and resolution.
In optical microscopy, the specimen to be viewed is placed on a glass slide and clipped on the stage...

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Related Experiment Video

Updated: Jun 19, 2026

Using Light Sheet Fluorescence Microscopy to Image Zebrafish Eye Development
13:01

Using Light Sheet Fluorescence Microscopy to Image Zebrafish Eye Development

Published on: April 10, 2016

Exemplar-based visualization of large document corpus.

Yanhua Chen1, Lijun Wang, Ming Dong

  • 1Machine Vision and Pattern Recognition Lab, Department of Computer Science, Wayne State University, Detroit, MI 48202, USA. chenyanh@wayne.edu

IEEE Transactions on Visualization and Computer Graphics
|October 17, 2009
PubMed
Summary
This summary is machine-generated.

Exemplar-based Visualization (EV) offers an efficient method for understanding large text collections. This technique uses representative data points to simplify complex information, making large text corpus analysis more accessible.

Related Experiment Videos

Last Updated: Jun 19, 2026

Using Light Sheet Fluorescence Microscopy to Image Zebrafish Eye Development
13:01

Using Light Sheet Fluorescence Microscopy to Image Zebrafish Eye Development

Published on: April 10, 2016

Area of Science:

  • Computer Science
  • Information Science
  • Data Visualization

Background:

  • The exponential growth of online information necessitates advanced methods for text data analysis.
  • Traditional text visualization techniques struggle with the scale of modern text corpora.
  • Understanding relationships within large document sets is a significant challenge.

Purpose of the Study:

  • To introduce Exemplar-based Visualization (EV), a novel technique for visualizing extremely large text corpora.
  • To develop a probabilistic multidimensional projection model for efficient text data representation.
  • To enhance the interpretability and reduce cognitive load in large-scale text analysis.

Main Methods:

  • Utilizing matrix approximation and decomposition for a low-rank text subspace.
  • Implementing a probabilistic multidimensional projection model with an objective function.
  • Employing iterative optimization to determine document-topic probabilities and parameter embedding.
  • Selecting representative exemplars for compact data approximation.

Main Results:

  • EV provides a highly efficient and flexible visualization of large text corpora.
  • Selected exemplars effectively summarize the entire dataset, reducing cognitive overload.
  • The technique facilitates easier interpretation of complex document relationships.
  • Experimental results on public datasets demonstrate the superior performance of EV.

Conclusions:

  • Exemplar-based Visualization (EV) is a powerful and scalable approach for analyzing large text data.
  • The method offers significant advantages in efficiency, flexibility, and interpretability.
  • EV represents a notable advancement in the field of text visualization and data analysis.