We used the same Indri index of ClueWeb09 that we built and used for last year’s TREC submissions [1]. All of our queries use the Indri query language. When we did not use feedback, we used a simple keyword query, resulting in scoring by a Dirichlet-smoothed language model. When we did use feedback, we used a weighted combination of the original query and weighted expansion terms derived from t...

A brief review of the paper, “Collaborative Filtering for Implicit Feedback Datasets” by Y. Hu, Y. Koren and C. Volinsky [1]. A Bayesian interpretation of the method described is developed that makes the some parameters easier to interpret.

In this paper, a new incremental predictive guidance method based on implicit form of velocity to be gained algorithm is proposed. In this approach, the generalized incremental predictive control (GIPC) approach is applied to the linearized model for compensating the guidance error. Instead of using the present state in popular model based predictive controller (MPC), in the new method both pre...

although explicit and implicit knowledge of language learners are essential to theoretical and pedagogical debates in second language acquisition (sla), little research has addressed the effects of instructional interventions on the two knowledge types (r. ellis, 2005).this study examined the relative effectiveness of explicit and implicit types of form-focused instruction (ffi) on the acquisit...

In most problem-solving activities, feedback is received at the end of an action sequence. This creates a credit-assignment problem where the learner must associate the feedback with earlier actions, and the interdependencies of actions require the learner to either remember past choices of actions (internal state information) or rely on external cues in the environment (external state informat...