HIV

1. The human immunodeficiency viruses are two species of Lentivirus that infect humans. Over time, they cause acquired immunodeficiency syndrome, a condition in which progressive failure of the immune system allows life-threatening opportunistic infections and cancers to thrive.

1. Method:
   We use Metamap to find biological semantics in the literature. TF and TF-IDF are used to evaluate the importance of entities respectively. TF represents word frequency, and IDF in TF-IDF represents inverse document frequency, which can be used to filter high-frequency words that cannot represent a certain field. Here, the TF-IDF calculation is to construct the semantics of a carcinogenic viruses and eight carcinogenic viruses into text respectively for calculation.

Please select a semantic type. The number shows how many sub-semantic types the semantic type contains.
Note:The larger the number of sub-semantic types is,the more time it will take to load data.

1.  Acquired_Abnormality  [External Cause]  111 2.  Activity  [External Cause]  9 3.  Age_Group  [External Cause]  31 4.  Amino_Acid_Sequence  [Internal Cause]  75 5.  Animal  [External Cause]  12 6.  Bacterium  [External Cause]  755 7.  Behavior  [External Cause]  11 8.  Biologic_Function  [Internal Cause]  60 9.  Body_Location_or_Region  [External Cause]  418 10.  Body_Space_or_Junction  [External Cause]  263 11.  Body_Substance  [External Cause]  200 12.  Body_System  [External Cause]  100 13.  Clinical_Drug  [External Cause]  184 14.  Daily_or_Recreational_Activity  [External Cause]  47 15.  Disease_or_Syndrome  [External Cause]  6252 16.  Educational_Activity  [External Cause]  123 17.  Environmental_Effect_of_Humans  [External Cause]  16 18.  Family_Group  [External Cause]  89 19.  Food  [External Cause]  246 20.  Fungus  [External Cause]  267 21.  Gene_or_Genome  [Internal Cause]  6101 22.  Genetic_Function  [Internal Cause]  361 23.  Geographic_Area  [External Cause]  406 24.  Governmental_or_Regulatory_Activity  [External Cause]  25 25.  Hazardous_or_Poisonous_Substance  [External Cause]  41 26.  Health_Care_Activity  [External Cause]  137 27.  Immunologic_Factor  [Internal Cause]  193 28.  Individual_Behavior  [External Cause]  71 29.  Injury_or_Poisoning  [External Cause]  445 30.  Mental_or_Behavioral_Dysfunction  [External Cause]  429 31.  Neoplastic_Process  [External Cause]  1512 32.  Organ_or_Tissue_Function  [External Cause]  380 33.  Organic_Chemical  [External Cause]  1307 34.  Organism  [External Cause]  12 35.  Organism_Attribute  [External Cause]  99 36.  Organism_Function  [External Cause]  258 37.  Pathologic_Function  [External Cause]  907 38.  Pharmacologic_Substance  [External Cause]  718 39.  Self_help_or_Relief_Organization  [External Cause]  10 40.  Sign_or_Symptom  [External Cause]  646 41.  Social_Behavior  [External Cause]  78 42.  Tissue  [External Cause]  276 43.  Virus  [External Cause]  647