Scaling dynamic authority-based search using materialized subgraphs .. For example, on the full Wikipedia dataset, BinRank can answer any query in less. BINRANK: SCALING DYNAMIC AUTHORITYBASED SEARCH USING The idea of approximating ObjectRank by using Materialized subgraphs (MSGs), which. Effective Bin Rank for Scaling Dynamic Authority. Based Search with Materialized Sub Graphs. L. Prasanna Kumar. Abstract. Dynamic authority-based keyword.

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Fortunately, real-world text databases have structures that are far from the usiny case. However, it may be observed that even though two nodes v 1 and v 2 are guaranteed to be found both in G and in MSG Bthe ordering or their ObjectRank scores might not be preserved on MSG B as we do not include intermediate nodes if their ObjectRank scores are below the convergence threshold.

During the bin construction process, the BinRank system 10 stores the bin identifier of each term into the Lucene index 16 as an additional field. The quality of search results should improve if objects in B are semantically related to t. Nodes in the dataset are then retrieved based on the executing, and a response to the search query is provided which includes the retrieved nodes.

BinRank: Scaling Dynamic Authority Based Search Using Materialized Sub Graphs

The sub-graphs are precomputed offline. The ObjectRank subgtaphs 10 stores a graph as a row-compressed adjacency matrix. In fact, the inventors have discovered that terms with strong semantic connections can generate good RSGs for each other. A method according to claim 2 wherein said grouping of terms in said dataset comprises grouping based on the co-occurrence of terms in said dataset. We introduce BinRank, a system that approximates ObjectRank usingg by utilizing a hybrid approach inspired by materialized views in traditional query processing.


For a given keyword query q, a query dispatcher 32 retrieves from the Lucene index 16 the posting list bs q used as the baseset for the ObjectRank execution and the bin identifier b q. In block 48authoritu-based authority-based keyword search is executed on the materalized sub-graph.

BinRank generates the subgraphs by partitioning all the terms in the corpus based on their co-occurrence, executing ObjectRank materialozed each partition using the terms to generate a set of random walk starting points, and keeping only those objects that receive non-negligible scores.

We know that pre-computing ObjectRank for all terms in our corpus is not feasible. It can be hard to automatically identify terms with such strong semantic connections for every query term. The second goal is minimizing the number of bins to save the pre-processing time. PageRank algorithm utilizes the Web graph link structure to assign global importance to Web pages.

BinRank: Scaling Dynamic Authority-Based Search Using Materialized Subgraphs – Semantic Scholar

Domain specific ontologies for semantic information brokering on the global information infrastructure. Removable storage unit represents, for example, a floppy subgraphx, a compact disc, a magnetic tape, or an optical disk, etc.

For example, on a graph of articles of English Wikipedia 1 with 3. The scalability of ObjectRank is improved with embodiments of the invention, while still maintaining the high quality of top-K result lists.

In order to save pre-processing cost and storage, each MSG is designed to answer multiple term queries. According to one embodiment of the present invention, a method for processing a query is provided.

BinRank: Scaling Dynamic Authority-Based Search Using Materialized Subgraphs

The PageRank score is independent of a keyword query. A system according to claim 13 wherein said first dynamic authority-based keyword search unit performs an ObjectRank operation. Therefore, the issue of scalability of PPR has attracted a lot of attention. A baseset B is created for every authorkty-based by taking the union of the posting lists of the terms in the bin, and construct MSG B for every bin.


ObjectRank performs top-K relevance search over a database modeled as a labeled directed graph.

Once the ObjectRank scores are computed and sorted, the resulting document ids are used to retrieve and present the top-k objects to the user. Let C, D, E, and A denote the number of concordant, discordant, e-tie, and a-tie pairs respectively.

BinRank: Scaling Dynamic Authority Based Search Using Materialized Sub Graphs – AngelList

A random walk is then executed over each partition in block ObjectRank requires multiple iterations over all nodes and links of the entire database graph. In particular, the invention approximates ObjectRank by using Materialized Sub-Graphs MSGwhich can be precomputed off-line to support on-line querying for a specific query workload, or the entire dictionary. Such computer programs, when executed, enable the computer system to perform the features of the present invention as discussed herein.

Due to caching of candidate intersection results in lines 12 – 14 of the process in FIG. ObjectRank has successfully been applied to databases that have social networking components, such as bibliographic data and collaborative product design.

The computer system may also include a communications interface Papers about XML tend to cite papers that talk about schemas and vice versa. We are proposing the BinRank algorithm for the trade time of search.