摘要:
Apparatus and methods are provided for determining a person's compass orientation from data generated by one or more sensors embedded within a portable device transported by the person. Such sensors may include an accelerometer, a GPS (Global Positioning System) receiver, a magnetometer (e.g., a compass), a barometer, etc. In some scenarios (e.g., when the person is walking), the person's initial orientation is directly determined and is used to calculate an initial orientation delta describing a difference between the person's initial orientation and an initial orientation of the device. In other scenarios, the person's current orientation is calculated based on an initial orientation of the device and a known or assumed orientation delta. Later in time, the orientation delta can be applied to the device's current orientation to determine the person's current orientation. As events involving the person and/or the device are observed, an orientation delta may be updated.
摘要:
An orientation-determining system determines a person's compass orientation from data generated by one or more sensors embedded within a portable device transported by the person. In some scenarios, the system uses the person's initial orientation to calculate an initial orientation delta describing a difference between the person's initial orientation and an initial orientation of the device. In other scenarios, the system calculates the person's current orientation based on an initial orientation of the device and a known or assumed orientation delta. The system can apply the orientation delta to the device's current orientation to determine the person's current orientation. The system can update the orientation delta based on any changes to the orientation of the person or the device.
摘要:
One embodiment of the present invention provides a system that selectively transfers code to a data producer in a networked system. In this system, the data producer generates data and then sends the data to a device. The device receives the data from the data producer, and then uses code on the device to perform a processing operation on the data. Next, the system analyzes characteristics of the data to determine whether performing the processing operation on the data producer can reduce resource usage. If so, the system transfers the code from the device to the data producer, and subsequently executes the code on the data producer. By executing the code on the data producer, the system can optimize resource usage in the networked system.
摘要:
Embodiments of the disclosed technology provide a system and method for automatically filling paper form with electronic data. The system receives from a user a scanned image of a paper form that includes a plurality of fields. The system then retrieves a schema map that maps the plurality of fields in the paper form to a plurality of fields in an electronic data record associated with the user. Next, the system retrieves data values of the fields in the electronic data record based on the schema map. The system also synthesizes the retrieved data values and the scanned image to create an image of the paper form in which the fields are filled with the retrieved data values.
摘要:
A recommender system determines a probability threshold for an activity-prediction model, and uses the probability threshold to predict whether a user is performing a target activity. To determine the probability threshold, the system computes a set of activity probabilities based on contextual information for a set of historical activities, and based on an activity-prediction model for a target activity. The system then compares a set of probability thresholds with the set of activity probabilities to determine a prediction success rate for each probability threshold. The system computes a utility score for each probability threshold based on the prediction success rates and a utility function, and selects a probability threshold whose utility score is optimal amongst the utility scores of the set of thresholds and greater than or equal to a baseline utility score. The system then assigns the probability threshold to the activity-prediction model.
摘要:
One embodiment of the present invention provides a system for determining venue information associated with a mobile device user. During operation, the system collects contextual information recorded by one or more sensors located on the mobile device and extracts a behavior pattern of the user as a function of time and/or an environmental indicator based on the collected contextual information. The system then compares the behavior pattern and/or the environmental indicator with known behavior patterns and/or environmental indicators associated with a number of venues stored in a database, and determines a venue associated with the user based at least on the comparison.
摘要:
Embodiments of the disclosed technology provide a system and method for automatically filling paper form with electronic data. The system receives from a user a scanned image of a paper form that includes a plurality of fields. The system then retrieves a schema map that maps the plurality of fields in the paper form to a plurality of fields in an electronic data record associated with the user. Next, the system retrieves data values of the fields in the electronic data record based on the schema map. The system also synthesizes the retrieved data values and the scanned image to create an image of the paper form in which the fields are filled with the retrieved data values.
摘要:
One embodiment of the present invention provides a system that selectively transfers code to a data producer in a networked system. In this system, the data producer generates data and then sends the data to a device. The device receives the data from the data producer, and then uses code on the device to perform a processing operation on the data. Next, the system analyzes characteristics of the data to determine whether performing the processing operation on the data producer can reduce resource usage. If so, the system transfers the code from the device to the data producer, and subsequently executes the code on the data producer. By executing the code on the data producer, the system can optimize resource usage in the networked system.
摘要:
One embodiment of the present invention provides a system that facilitates contextually specific opportunity-based advertising. During operation, the system collects contextual information associated with a consumer, and determines a current activity and/or a future activity in which the consumer is engaged based on the contextual information. The system then predicts one or more upcoming advertisement opportunities associated with the consumer based on the determined activities, and presents the predicted opportunities to one or more advertisers, thereby allowing the advertisers to determine a bid amount for presenting an advertisement at the predicted opportunities. The system further selects at least one advertisement to present based on one or more of the following: the bid amount, the collected contextual information, an occurrence probability of the predicted advertisement opportunities, content of the advertisement, metadata associated with the advertisement; and presents the advertisement to the consumer.
摘要:
One embodiment of the present invention provides a system for inferring a user's activity. During operation, the system collects contextual information recorded by a plurality of components located on a mobile device associated with the user. The system then extracts the user's behavior pattern based on the collected contextual information, and determines whether the user is engaged in an employment-related activity.