public List <Article> doList(List <string> searchWords)
{
string query = "";
foreach (String word in searchWords)
{
query += word + " ";
}
List <Article> articles = SearchIndex.FindArticles(query);
Dictionary.buildDictionary2(articles);
int numOfWords = Dictionary.dictionary.Count;
int[] searchWordsCount = new int[numOfWords];
double[] IDF = new double[numOfWords];
for (int i = 0; i < numOfWords; i++)
{
searchWordsCount[i] = 0;
IDF[i] = 0;
}
foreach (Article art in articles)
{
countTermsFrequencies(art, searchWords);
countYearFrequencies(art);
countTitleFrequencies(art, searchWords);
System.Diagnostics.Debug.WriteLine("doc TF: " + String.Join(", ", art.TF));
for (int i = 0; i < numOfWords; i++)
{
if (art.TF[i] > 0)
{
searchWordsCount[i]++;
}
}
}
double ratio;
for (int i = 0; i < numOfWords; i++)
{
if (searchWordsCount[i] >= 1)
{
ratio = (double)articles.Count / searchWordsCount[i];
if (ratio == 1)
{
IDF[i] = 0.02;
}
else
{
IDF[i] = Math.Log10(ratio);
}
}
}
System.Diagnostics.Debug.WriteLine("--------------------------");
System.Diagnostics.Debug.WriteLine("word in how many texts: " + String.Join(", ", searchWordsCount.ToArray()));
System.Diagnostics.Debug.WriteLine("IDF: " + String.Join(", ", IDF.ToArray()));
foreach (Article art in articles)
{
art.TF_IDF = new double[numOfWords];
for (int i = 0; i < numOfWords; i++)
{
art.TF_IDF[i] = art.TF[i] * IDF[i];
}
}
return(articles);
}
public static void newLoad(string fileName)
{
string _dataPath = Path.Combine(HttpContext.Current.Request.PhysicalApplicationPath, @"App_Data\" + fileName + ".xml");
if (File.Exists(_dataPath))
{
int max = 500;
int i = 1;
var articlesToIndex = new List <Article>();
Article article = new Article(false);
System.Diagnostics.Debug.WriteLine("Articles indexed from file: " + fileName);
XmlReader xmlReader = XmlReader.Create(_dataPath);
while (xmlReader.Read())
{
if (xmlReader.NodeType == XmlNodeType.Element && xmlReader.Name == "PubmedArticle")
{
article = new Article(true);
}
else
if (xmlReader.NodeType == XmlNodeType.Element && xmlReader.Name == "ArticleTitle")
{
xmlReader.Read();
article.title = xmlReader.Value;
}
else
if (xmlReader.NodeType == XmlNodeType.Element && xmlReader.Name == "Abstract")
{
while (!(xmlReader.NodeType == XmlNodeType.EndElement && xmlReader.Name == "Abstract"))
{
if (xmlReader.NodeType == XmlNodeType.Element && xmlReader.Name == "AbstractText")
{
xmlReader.Read();
article.description += xmlReader.Value + " ";
}
xmlReader.Read();
}
}
else
if (xmlReader.NodeType == XmlNodeType.Element && xmlReader.Name == "DateCreated")
{
string y = "0000";
string m = "01";
string d = "01";
while (!(xmlReader.NodeType == XmlNodeType.EndElement && xmlReader.Name == "DateCreated"))
{
if (xmlReader.NodeType == XmlNodeType.Element && xmlReader.Name == "Year")
{
xmlReader.Read();
y = xmlReader.Value;
}
if (xmlReader.NodeType == XmlNodeType.Element && xmlReader.Name == "Month")
{
xmlReader.Read();
m = xmlReader.Value;
}
if (xmlReader.NodeType == XmlNodeType.Element && xmlReader.Name == "Day")
{
xmlReader.Read();
d = xmlReader.Value;
}
xmlReader.Read();
}
article.dateStr = y + m + d;
article.date = new DateTime((Int32)int.Parse(y), (Int32)int.Parse(m), (Int32)int.Parse(d));
}
else
if (xmlReader.NodeType == XmlNodeType.Element && xmlReader.Name == "AuthorList")
{
Author author;
while (!(xmlReader.NodeType == XmlNodeType.EndElement && xmlReader.Name == "AuthorList"))
{
if (xmlReader.NodeType == XmlNodeType.Element && xmlReader.Name == "Author")
{
author = new Author();
while (!(xmlReader.NodeType == XmlNodeType.EndElement && xmlReader.Name == "Author"))
{
if (xmlReader.NodeType == XmlNodeType.Element && xmlReader.Name == "LastName")
{
xmlReader.Read();
author.lastName = xmlReader.Value;
}
if (xmlReader.NodeType == XmlNodeType.Element && xmlReader.Name == "ForeName")
{
xmlReader.Read();
author.firstName = xmlReader.Value;
}
xmlReader.Read();
}
article.authors.Add(author);
}
xmlReader.Read();
}
}
else
if (xmlReader.NodeType == XmlNodeType.EndElement && xmlReader.Name == "PubmedArticle")
{
articlesToIndex.Add(article);
if (++i > max)
{
i = 1;
SearchIndex.AddUpdateLuceneIndex(articlesToIndex);
articlesToIndex.Clear();
}
}
}
SearchIndex.AddUpdateLuceneIndex(articlesToIndex);
articlesToIndex.Clear();
}
}
