International Business Machines Corporation

Google Inc.

Sunil Chandra

Vijay Mann

Girish Bhimrao Chafle

Pankaj Kankar

Mangala Gowri Nanda

Sougata Mukherjea

Ashish Verma

Sugata Ghosal

Neeran Mohan Karnik

Sumit Mittal

Dipanjan Chakraborty

Harshit Chopra

Siddaarth Shanmugam

Sudha Krishnamurthy

Methods, systems, and apparatus, including computer program products, for segmenting text for searching are disclosed. In one implementation, a method is provided. The method includes receiving text; segmenting the text into one or more unigrams; filtering the one or more unigrams to identify one or more core unigrams; and generating a searchable resource, including: for each of the one or more core unigrams: identifying a stem, indexing the stem, and associating one or more second n-grams with the indexed stem. Each of the one or more second n-grams is derived from the text and includes a core unigram that is related to the indexed stem.

Segmenting text for searching

The present invention deals with a method and system for routing a call in a mobile communication network. The method comprises receiving a message by a caller prevailing network corresponding to a caller from a callee home network corresponding to a callee, if the callee is roaming. The message is received in response to the call being initiated by the caller for the callee. The message can comprise a redirection information corresponding to the callee in roaming. The method further comprises solving a predefined criterion for routing the call based on the redirection information in the message and connecting the call based on solution of the predefined criterion.

Method and a system for minimizing roaming cost in a mobile communication network

A mobile wireless device, such as a mobile wireless phone, is adapted based on a user's current abstracted contextual situation, where the context of a user is determined using devices enabled with near-field communication technology. Dynamic information of a user of a mobile device, such as the identity of his or her current environment, is determined using near-field communication, such as radio-frequency identification (RFID) tags. Static information regarding the user is also determined, where such static information can include the user's preferences regarding how the mobile device should adapt to certain environments. An abstracted contextual situation of the user is synthesized based on this dynamic and static information. One or more adaptation directives for the mobile device of the user are determined based on the user's abstracted contextual situation. The adaptation directives are implemented for the mobile device, without user interaction, or by instructing the user to appropriately configure the mobile device.

Mobile wireless device adaptation based on abstracted contectual situation of user using near-field communications and information collectors

Embodiments herein provide a fault-handling scheme based on forward recovery for cooperative workflow environments. The fault handling scheme relies on the correct placement of transaction scopes and their associated fault and compensation handlers for maintaining correct application semantics, a fault propagation scheme for forwarding faults to a workflow component that has the corresponding fault handler, and a distributed mechanism for collecting data of completed workflow components to facilitate recovering from faults. The fault handling scheme makes use of control flow messages to facilitate compensation of nested transaction scopes (residing in different components). The workflow components are also modified with additional code for aiding with fault propagation and fault recovery.

Method for fault handling in a co-operative workflow environment

A technique for orchestrating composite web services in a constrained data flow environment. Data flow constraints represent the restrictions which the domains involved in composition might want to impose on access to the data they provide or the source from which they can accept data. The data flow constraints are overcome by breaking down an input composite web service specification into topologies (a topology is a set of partitions communicatively connected with one another at runtime). The system applies a rule-based filtering mechanism to choose a topology that does not violate any data flow constraints. Each of the partitions belonging to the chosen topology is executed within the same domain as the corresponding web service it invokes, thus having the same access rights as the corresponding web service. The composite web service is orchestrated in a decentralized fashion using these partitions, thereby ensuring that no data flow constraints are violated.

System and method for orchestrating composite web services in constrained data flow environments

Decentralized orchestration of composite services results in a number of flow topologies which differ in their messaging patterns and the distribution of flow code amongst different partitions of a topology. Different performance metrics result for different topologies, and this is governed by the availability of resources, such as CPU cycles, memory, network bandwidth, and so on. A performance model is used to evaluate the performance of different topologies based on availability of resources, and dynamically direct client requests between different topologies according to prevailing conditions.

Adaptive orchestration of composite services

The invention provides a method for fault handling in a co-operative workflow environment that employs a placement strategy for transaction scope and associated fault handlers and compensation handlers across different workfiow components. The method employs a fault propagation scheme for forwarding a fault occurring in any of the workflow components to a fault handler. The method employs a distributed data collection mechanism to facilitate recovery from a fault occurring in any the workfiow components. The method employs a fault recovery mechanism using compensation. The transaction scope defines a transaction boundary and provides a fault handling and a fault recovery context for a set of activities and the transaction scope may be nested inside another transaction scope resulting in outer and inner scopes.

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New Delhi, India

Sunil Chandra