MahdiAlHoseini
21-10-16, 22:02
بسم الله الرحمن الرحیم
با سلام
الگوریتم MEAD چه جوری عمل می کند؟
پاراگراف زیر قسمتی از یک مقاله است:
Centroid-based methods: This type of methods ranks sentences
by computing their salience using a set of features. For example,
MEAD (Radev, Jing, Stys, & Tam, 2004) is a typical centroidbased
algorithm which extracts sentences according to three
parameters, i.e. centroid value, positional value, and first-sentence
overlap. The centroid value of a sentence is computed
as the average cosine similarity between the sentences and
the rest of the sentences in the document collection. The positional
value is computed as follows: the leading sentence is
assigned score 1 and the score decreases by 1=n for each sentence,
where n is the number of sentences in these documents.
The overlap value is computed as the cosine similarity between
a sentence and the first sentence in the same document. Then
the three values are linearly combined with equal weights.
با تشکر
با سلام
الگوریتم MEAD چه جوری عمل می کند؟
پاراگراف زیر قسمتی از یک مقاله است:
Centroid-based methods: This type of methods ranks sentences
by computing their salience using a set of features. For example,
MEAD (Radev, Jing, Stys, & Tam, 2004) is a typical centroidbased
algorithm which extracts sentences according to three
parameters, i.e. centroid value, positional value, and first-sentence
overlap. The centroid value of a sentence is computed
as the average cosine similarity between the sentences and
the rest of the sentences in the document collection. The positional
value is computed as follows: the leading sentence is
assigned score 1 and the score decreases by 1=n for each sentence,
where n is the number of sentences in these documents.
The overlap value is computed as the cosine similarity between
a sentence and the first sentence in the same document. Then
the three values are linearly combined with equal weights.
با تشکر