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Mining online discussions to extract answers is an important research problem. Methods proposed in the past used supervised classifiers trained on labeled data. But, collecting training data for each target forum is labor intensive and time consuming , thus limiting their deployment. A recent approach had proposed to extract answers in an unsupervised(More)
Extracting question–answer pairs from social media discussions has garnered much attention in recent times. Several methods have been proposed in the past that pose this task as a post or sentence classification problem, which label each entry as an answer or not. This paper makes the first attempt at the following two–fold objectives: (a) In all(More)
Online forums are becoming a popular way of finding useful information on the web. Search over forums for existing discussion threads so far is limited to keyword-based search due to the minimal effort required on part of the users. However, it is often not possible to capture all the relevant context in a complex query using a small number of keywords.(More)
Non-Sentential Utterances (NSUs) are short utterances that do not have the form of a full sentence but nevertheless convey a complete sentential meaning in the context of a conversation. NSUs are frequently used to ask follow up questions during interactions with question answer (QA) systems resulting into incorrect answers being presented to their users.(More)
Answer extraction from discussion boards is an extensively studied problem. Most of the existing work is focused on supervised methods for extracting answers using similarity features and forum-specific features. Although this works well for the domain or forum data that it has been trained on, it is difficult to use the same models for a domain where the(More)
A commentary on p53 at the endoplasmic reticulum regulates apoptosis in a Ca 2+-dependent manner The tumor suppressive function of p53 is a fundamental barrier against cancer development. This is attested by the high frequency of p53 mutations in human cancer, more than any other known gene. Therefore , the mechanisms by which p53 suppresses cancer have(More)
The tumor suppressor p53 normally acts as a brake to halt damaged cells from perpetrating their genetic errors into future generations. If p53 is disrupted by mutation, it may not only lose these corrective powers, but counterproductively acquire new capacities that drive cancer. A newly emerging manner in which mutant p53 executes its cancer promoting(More)
LIMITED DISTRIBUTION NOTICE: This report has been submitted for publication outside of IBM and will probably be copyrighted is accepted for publication. It has been issued as a Research Report for early dissemination of its contents. In view of the transfer of copyright to the outside publisher, its distribution outside of IBM prior to publication should be(More)
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