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Dongwei Cao

from New York, NY

Dongwei Cao Phones & Addresses

  • New York, NY
  • Flushing, NY

Us Patents

  • Estimating Probabilities Of Events In Sponsored Search Using Adaptive Models

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  • US Patent:
    20120023043, Jan 26, 2012
  • Filed:
    Jul 21, 2010
  • Appl. No.:
    12/840598
  • Inventors:
    Ozgur Cetin - New York NY, US
    Dongwei Cao - Los Angeles CA, US
    Rukmini Iyer - Los Altos CA, US
  • International Classification:
    G06F 15/18
    G06Q 30/00
    G06N 5/02
  • US Classification:
    706 12, 706 52, 705 1452
  • Abstract:
    A machine-learning method for estimating probability of a click event in online advertising systems by computing and comparing an aggregated predictive model (a global model) and one or more data-wise sliced predictive models (local models). The method comprises receiving training data having a plurality of features stored in a feature set and constructing a global predictive model that estimates the probability of a click event for the processed feature set. Then, partitioning the global predictive model into one or more data-wise sliced training sets for training a local model from each of the data-wise slices, and then determining whether a particular local model estimates probability of click event for the feature set better than the global model. A given feature set may be collected from historical data, and may comprise a feature vector for a plurality of query-advertisement pairs and a corresponding indicator that represents a click on the advertisement.

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