Skip to main content
Ontario Tech acknowledges the lands and people of the Mississaugas of Scugog Island First Nation.

We are thankful to be welcome on these lands in friendship. The lands we are situated on are covered by the Williams Treaties and are the traditional territory of the Mississaugas, a branch of the greater Anishinaabeg Nation, including Algonquin, Ojibway, Odawa and Pottawatomi. These lands remain home to many Indigenous nations and peoples.

We acknowledge this land out of respect for the Indigenous nations who have cared for Turtle Island, also called North America, from before the arrival of settler peoples until this day. Most importantly, we acknowledge that the history of these lands has been tainted by poor treatment and a lack of friendship with the First Nations who call them home.

This history is something we are all affected by because we are all treaty people in Canada. We all have a shared history to reflect on, and each of us is affected by this history in different ways. Our past defines our present, but if we move forward as friends and allies, then it does not have to define our future.

Learn more about Indigenous Education and Cultural Services

November 4, 2015

Speaker: Mengyu Wang, MSc student

Title: Bloom Filter Tree for Fast Search of Tree-Structured Data

Abstract: We consider the problem of searching for a data element in a tree-structured data set (e.g. XML). We propose a method that is more efficient than tree traversal and which still retains all the important metadata information that would be lost in the naive method of linear list search. We compute a bloom filter for each interior node of the tree, essentially building a bloom filter tree to enhance the original data tree. Using the bloom filters, we can do fast search by pruning out entire subtrees from being searched. We present a theoretical analysis of the search complexity of selective placement of bloom filters in the tree, which leads to an optimal placement strategy. Our experiments verify the efficiency of our method.