Latent Semantic Analysis at CU

Educational Text Selection

This interface allows you to select a text based on some submitted text about the heart. The text returned should be at a level appropriate for the reader based on his or her knowledge as demonstrated in the submitted text.

There are some sample texts below which you can use to test the system. Press the 'Submit Text' button below each sample text to try it.

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Number of terms to return:

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Remove terms from return list that appear in corpus with frequency less than (<=):

Select the type of input text:
Note: By selecting term no weighting is used. Selecting pseudodoc uses log entropy weighting.

Sample Text 1
The heart is one of the most important organs in the body. It is the center of the circulation system. It pumps blood to all parts of the body. You can make your heart stronger by exercising regularly.

Sample Text 2
The human heart and the circulatory system is one of the most important systems of the body. The purpose of the circulatory system is to transport oxygen and nutrients to the body and to remove wastes and other byproducts from the body via the veins to the kidneys for filtration. One other important function of the circulatory system is to transport hormones that regulate our body's metabolism and control other parts. The function of the heart is to pump the blood through the veins and arteries. The heart is made up of very strong muscles that can contract themselves without the need of the brain to neurons inside the heart muscles.

Sample Text 3
The heart is the main pump in the body that supplies the rest of the body with oxygenated blood by way of the arteries. There is a reaction that takes place at the ends of the arteries where the oxygen is taken out of the blood and replaced with CO2. This reaction takes place in the capillaries. The arteries branch to become smaller and more numerous, these are then called arterioles. The arterioles again branch and lead to the capillaries. After the exchange of CO 2 and O2 in the capillaries, the blood flows to venules (branches of veins) and then to veins which will carry this deoxygenated blood back to the heart. All the veins enter into two large veins, the superior and inferior vena cava. The vena cava enter the right atrium of the heart. Then the blood flows into the right ventricle but is not allowed to pass back into the right atrium because of the right atrioventricular valve. The blood is then pumped into the pulmonary artery which takes the blood to the lungs.

Select a topic space:

Number of terms to return:
Number of factors to use:		(Leave blank for maximum factors available.)
Remove terms from return list that appear in corpus with frequency less than (<=):
Select the type of input text:
Note: By selecting term no weighting is used. Selecting pseudodoc uses log entropy weighting.