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Papers by Mohammed Aljlayl
The inflectional structure of a word impacts the retrieval accuracy of information retrieval syst... more The inflectional structure of a word impacts the retrieval accuracy of information retrieval systems of Latin-based languages. We present two stemming algorithms for Arabic information retrieval systems. We empirically investigate the effectiveness of surfacebased retrieval. This approach degrades retrieval precision since Arabic is a highly inflected language. Accordingly, we propose root-based retrieval. We notice a statistically significant improvement over the surface-based approach. Many variant word senses are based on an identical root; thus, the root-based algorithm creates invalid conflation classes that result in an ambiguous query which degrades the performance by adding extraneous terms. To resolve ambiguity, we propose a novel lightstemming algorithm for Arabic texts. This automatic rule-based stemming algorithm is not as aggressive as the root extraction algorithm. We show that the light stemming algorithm significantly outperforms the root-based algorithm. We also show that a significant improvement in retrieval precision can be achieved with light inflectional analysis of Arabic words.
Text REtrieval Conference, 2002
For TREC 10 we participated in the Named Page Finding Task and the Cross-Lingual Task. In the web... more For TREC 10 we participated in the Named Page Finding Task and the Cross-Lingual Task. In the web track, we explored the use of linear combinations of term collections based on document structure. Our goal was to examine the effects of different term collection statistics based on document structure in respect to known item retrieval. We parsed documents into structural components and built specific term indexes based on that document structure. Each of those indices have their own collection statistics for term weighting based on the type of language used for that structure in the collection. For producing a single ranked list, we examined a weighted linear combination approach to merging results. Our approach to known item retrieval was equal or above the median 58% of the time and 71% above the mean score of submitted runs. In the Arabic track we participated in Arabic Cross-language Information Retrieval (CLIR) and in Arabic monolingual information retrieval. For the monolingual retrieval, we examined the use of two stemming algorithms. The first is a deeper approach, and the second is a pattern-based approach. For the Arabic CLIR, we explored the retrieval effectiveness by using a machine translation (MT) system and translation probabilities obtained from parallel documents collection provided by the United Nations (UN).
2019 IEEE Global Conference on Internet of Things (GCIoT), 2019
We introduce a new twist to the classical automatic repeat request (ARQ)-based cooperative relayi... more We introduce a new twist to the classical automatic repeat request (ARQ)-based cooperative relaying scheme. Here, we target a 5G slice for offering internet-of-things (IoT)-inspired services. In this 5G application segment (e.g., utility or smart metering), utility sensors or devices are expected to last for decades and, operate on tight power budgets, and the system can tolerate periodic stops to check the fidelity of previous transmissions. For this scenario, we employ a service provider-deployed relay that alleviates the IoT devices of their communication burdens. The source transmits for a certain time window or period without requiring acknowledgments (ACK) from the destination. At the end of this window, the destination sends an ACK. If negative, the relay is expected to assist. Thus, the relay transmits only intermittently, in either one transmission time slot or a few time slots, using a suitably chosen higherorder modulation constellation. If no error occurs, the source continues its transmission. The numerical results show that with just a few antennas at the relay, the new scheme provides both a reduction in the number of ARQ transmissions and a superior probability of bit error compared with a reference scheme. We adopt the two-parameter Weibull fading model to evaluate the performance of the proposed scheme.
Voice over Internet Protocol (VoIP) is a technology that transports voice data packets across pac... more Voice over Internet Protocol (VoIP) is a technology that transports voice data packets across packet-switched networks using the Internet Protocol (IP). Losing packets in the network is inevitable, and losing voice packets degrades audio quality. The main goal of quality of service (QoS) is to reduce or eliminate delay and loss of voice packets that travels across a network. Researchers proposed many techniques for improving quality of service (QoS) in the face of packet loss . One of these techniques is sender-based loss-recovery techniques (SBLR), whereby the sender assumes an active role to help the receiver recover lost data to improve QoS when packet loss occurs. In this thesis we developed new threshold/Ppersistent sender-based loss recovery techniques for VoIP network. Three loss threshold categories for improving sender– based loss recovery were proposed which are: Random, Adaptive and Fixed threshold metrics respectively. These categories control the volume of the replicate...
2021 International Conference on Electrical, Computer, Communications and Mechatronics Engineering (ICECCME), 2021
We use fixed relays deployed by network operators to reduce re-transmission (thereby reducing net... more We use fixed relays deployed by network operators to reduce re-transmission (thereby reducing network power requirements) in addition to providing excellent end-to-end error performance in a revisit to automatic repeat request-based cooperative relaying. The new relaying scheme facilitates the creation of a connectivity suitable for delay tolerant internet-of-things (IoT)-type services. For IoT devices, link reliability and power efficiency are a major system design consideration. The proposed scheme operates in the following fashion. The source (e.g., a sensor) transmits for a certain time window. During this period, the source and the relays do not require per transmission acknowledgment (ACK) from the destination. At the end of a transmission window, the destination sends a ‘group’ ACK. If negative, relays are invited to help. Depending on the cooperation strategy, each relay transmits in either one transmission time slot or a few time slots, using a suitably chosen higher-order modulation constellation. If no error occurs, the source continues its transmission. Furthermore, we devise a novel strategy for selecting the best relay for this new way of exploiting the benefits of multiple relays in a network. In the process, we reclaim the bandwidth expansion that comes with multi-relay system but still maintaining E2E bit error rate that is superior to that of a single relay cooperation. Numerical results that reveal the benefits of the new and modified ARQ cooperative relaying scheme are presented.
IEEE Consumer Electronics Magazine, 2019
Connected and autonomous vehicles (AVs) will need to communicate significant amounts of data to p... more Connected and autonomous vehicles (AVs) will need to communicate significant amounts of data to provide various safety, navigation and infotainment services to consumers. This article discusses the recent technological advances and standardization efforts in Cellular Vehicle-to-Everything (C-V2X) technologies that are being developed to support the ultra-reliable, low latency, and high throughput required by AVs. The key V2X applications and their communication requirements, with an emphasis on video delivery, are then presented. In conclusion, we highlight the primary challenges of V2X network design, and present several future research directions including the role of network intelligence to facilitate large-scale deployments of V2X applications.
Journal of The American Society for Information Science and Technology, 2002
Abstract In Cross-Language Information Retrieval (CLIR), queries in one language retrieve relevan... more Abstract In Cross-Language Information Retrieval (CLIR), queries in one language retrieve relevant documents in other languages. Machine-Readable Dictionaries (MRD) and Machine Translation (MT) systems are important resources for query translation in CLIR. We investigate the use of MT systems and MRD to Arabic–English and English–Arabic CLIR. The translation ambiguity associated with these resources is the key problem. We present three methods of query translation using a bilingual dictionary for Arabic–English CLIR. ...
… Technology: Coding and …, 2002
... The ALKAFI Arabic-English MT system is a commercial system developed by CIMOS Corporation and... more ... The ALKAFI Arabic-English MT system is a commercial system developed by CIMOS Corporation and is the first Arabic to English machine translation system. The system attempts to analyze terms in context and then builds semantic links. ...
Google, Inc. (search). ...
Proceedings of the 11th …, 2002
For TREC 10 we participated in the Named Page Finding Task and the Cross-Lingual Task. In the web... more For TREC 10 we participated in the Named Page Finding Task and the Cross-Lingual Task. In the web track, we explored the use of linear combinations of term collections based on document structure. Our goal was to examine the effects of different term collection statistics based on document structure in respect to known item retrieval. We parsed documents into structural components and built specific term indexes based on that document structure. Each of those indices have their own collection statistics for term weighting based on the type of language used for that structure in the collection. For producing a single ranked list, we examined a weighted linear combination approach to merging results. Our approach to known item retrieval was equal or above the median 58% of the time and 71% above the mean score of submitted runs. In the Arabic track we participated in Arabic Cross-language Information Retrieval (CLIR) and in Arabic monolingual information retrieval. For the monolingual retrieval, we examined the use of two stemming algorithms. The first is a deeper approach, and the second is a pattern-based approach. For the Arabic CLIR, we explored the retrieval effectiveness by using a machine translation (MT) system and translation probabilities obtained from parallel documents collection provided by the United Nations (UN).
Proceedings of the tenth international conference …, 2001
In Cross-Language Information Retrieval (CLIR), queries in one language retrieve relevant documen... more In Cross-Language Information Retrieval (CLIR), queries in one language retrieve relevant documents in other languages. Machine-Readable Dictionary (MRD) and Machine Translation (MT) are important resources for query translation in CLIR. We investigate MT and MRD to Arabic-English CLIR. The translation ambiguity associated with these resources is the key problem. We present three methods of query translation using a bilingual dictionary for Arabic-English CLIR. First, we present the Every-Match (EM) method. This method yields ambiguous translations since many extraneous terms are added to the original query. To disambiguate the query translation, we present the First-Match (FM) method that considers the first match in the dictionary as the candidate term. Finally, we present the Two-Phase (TP) method. We show that good retrieval effectiveness can be achieved without complex resources using the Two-Phase method for Arabic-English CLIR. We also empirically evaluate the effectiveness of the MT-based method using short, medium, and long queries from TREC. The effects of the query length on the quality of the MT-based CLIR are investigated.
… of the eleventh international conference on …, 2002
The inflectional structure of a word impacts the retrieval accuracy of information retrieval syst... more The inflectional structure of a word impacts the retrieval accuracy of information retrieval systems of Latin-based languages. We present two stemming algorithms for Arabic information retrieval systems. We empirically investigate the effectiveness of surfacebased retrieval. This approach degrades retrieval precision since Arabic is a highly inflected language. Accordingly, we propose root-based retrieval. We notice a statistically significant improvement over the surface-based approach. Many variant word senses are based on an identical root; thus, the root-based algorithm creates invalid conflation classes that result in an ambiguous query which degrades the performance by adding extraneous terms. To resolve ambiguity, we propose a novel lightstemming algorithm for Arabic texts. This automatic rule-based stemming algorithm is not as aggressive as the root extraction algorithm. We show that the light stemming algorithm significantly outperforms the root-based algorithm. We also show that a significant improvement in retrieval precision can be achieved with light inflectional analysis of Arabic words.
Text REtrieval Conference, 2002
For TREC 10 we participated in the Named Page Finding Task and the Cross-Lingual Task. In the web... more For TREC 10 we participated in the Named Page Finding Task and the Cross-Lingual Task. In the web track, we explored the use of linear combinations of term collections based on document structure. Our goal was to examine the effects of different term collection statistics based on document structure in respect to known item retrieval. We parsed documents into structural components and built specific term indexes based on that document structure. Each of those indices have their own collection statistics for term weighting based on the type of language used for that structure in the collection. For producing a single ranked list, we examined a weighted linear combination approach to merging results. Our approach to known item retrieval was equal or above the median 58% of the time and 71% above the mean score of submitted runs. In the Arabic track we participated in Arabic Cross-language Information Retrieval (CLIR) and in Arabic monolingual information retrieval. For the monolingual retrieval, we examined the use of two stemming algorithms. The first is a deeper approach, and the second is a pattern-based approach. For the Arabic CLIR, we explored the retrieval effectiveness by using a machine translation (MT) system and translation probabilities obtained from parallel documents collection provided by the United Nations (UN).
2019 IEEE Global Conference on Internet of Things (GCIoT), 2019
We introduce a new twist to the classical automatic repeat request (ARQ)-based cooperative relayi... more We introduce a new twist to the classical automatic repeat request (ARQ)-based cooperative relaying scheme. Here, we target a 5G slice for offering internet-of-things (IoT)-inspired services. In this 5G application segment (e.g., utility or smart metering), utility sensors or devices are expected to last for decades and, operate on tight power budgets, and the system can tolerate periodic stops to check the fidelity of previous transmissions. For this scenario, we employ a service provider-deployed relay that alleviates the IoT devices of their communication burdens. The source transmits for a certain time window or period without requiring acknowledgments (ACK) from the destination. At the end of this window, the destination sends an ACK. If negative, the relay is expected to assist. Thus, the relay transmits only intermittently, in either one transmission time slot or a few time slots, using a suitably chosen higherorder modulation constellation. If no error occurs, the source continues its transmission. The numerical results show that with just a few antennas at the relay, the new scheme provides both a reduction in the number of ARQ transmissions and a superior probability of bit error compared with a reference scheme. We adopt the two-parameter Weibull fading model to evaluate the performance of the proposed scheme.
Voice over Internet Protocol (VoIP) is a technology that transports voice data packets across pac... more Voice over Internet Protocol (VoIP) is a technology that transports voice data packets across packet-switched networks using the Internet Protocol (IP). Losing packets in the network is inevitable, and losing voice packets degrades audio quality. The main goal of quality of service (QoS) is to reduce or eliminate delay and loss of voice packets that travels across a network. Researchers proposed many techniques for improving quality of service (QoS) in the face of packet loss . One of these techniques is sender-based loss-recovery techniques (SBLR), whereby the sender assumes an active role to help the receiver recover lost data to improve QoS when packet loss occurs. In this thesis we developed new threshold/Ppersistent sender-based loss recovery techniques for VoIP network. Three loss threshold categories for improving sender– based loss recovery were proposed which are: Random, Adaptive and Fixed threshold metrics respectively. These categories control the volume of the replicate...
2021 International Conference on Electrical, Computer, Communications and Mechatronics Engineering (ICECCME), 2021
We use fixed relays deployed by network operators to reduce re-transmission (thereby reducing net... more We use fixed relays deployed by network operators to reduce re-transmission (thereby reducing network power requirements) in addition to providing excellent end-to-end error performance in a revisit to automatic repeat request-based cooperative relaying. The new relaying scheme facilitates the creation of a connectivity suitable for delay tolerant internet-of-things (IoT)-type services. For IoT devices, link reliability and power efficiency are a major system design consideration. The proposed scheme operates in the following fashion. The source (e.g., a sensor) transmits for a certain time window. During this period, the source and the relays do not require per transmission acknowledgment (ACK) from the destination. At the end of a transmission window, the destination sends a ‘group’ ACK. If negative, relays are invited to help. Depending on the cooperation strategy, each relay transmits in either one transmission time slot or a few time slots, using a suitably chosen higher-order modulation constellation. If no error occurs, the source continues its transmission. Furthermore, we devise a novel strategy for selecting the best relay for this new way of exploiting the benefits of multiple relays in a network. In the process, we reclaim the bandwidth expansion that comes with multi-relay system but still maintaining E2E bit error rate that is superior to that of a single relay cooperation. Numerical results that reveal the benefits of the new and modified ARQ cooperative relaying scheme are presented.
IEEE Consumer Electronics Magazine, 2019
Connected and autonomous vehicles (AVs) will need to communicate significant amounts of data to p... more Connected and autonomous vehicles (AVs) will need to communicate significant amounts of data to provide various safety, navigation and infotainment services to consumers. This article discusses the recent technological advances and standardization efforts in Cellular Vehicle-to-Everything (C-V2X) technologies that are being developed to support the ultra-reliable, low latency, and high throughput required by AVs. The key V2X applications and their communication requirements, with an emphasis on video delivery, are then presented. In conclusion, we highlight the primary challenges of V2X network design, and present several future research directions including the role of network intelligence to facilitate large-scale deployments of V2X applications.
Journal of The American Society for Information Science and Technology, 2002
Abstract In Cross-Language Information Retrieval (CLIR), queries in one language retrieve relevan... more Abstract In Cross-Language Information Retrieval (CLIR), queries in one language retrieve relevant documents in other languages. Machine-Readable Dictionaries (MRD) and Machine Translation (MT) systems are important resources for query translation in CLIR. We investigate the use of MT systems and MRD to Arabic–English and English–Arabic CLIR. The translation ambiguity associated with these resources is the key problem. We present three methods of query translation using a bilingual dictionary for Arabic–English CLIR. ...
… Technology: Coding and …, 2002
... The ALKAFI Arabic-English MT system is a commercial system developed by CIMOS Corporation and... more ... The ALKAFI Arabic-English MT system is a commercial system developed by CIMOS Corporation and is the first Arabic to English machine translation system. The system attempts to analyze terms in context and then builds semantic links. ...
Google, Inc. (search). ...
Proceedings of the 11th …, 2002
For TREC 10 we participated in the Named Page Finding Task and the Cross-Lingual Task. In the web... more For TREC 10 we participated in the Named Page Finding Task and the Cross-Lingual Task. In the web track, we explored the use of linear combinations of term collections based on document structure. Our goal was to examine the effects of different term collection statistics based on document structure in respect to known item retrieval. We parsed documents into structural components and built specific term indexes based on that document structure. Each of those indices have their own collection statistics for term weighting based on the type of language used for that structure in the collection. For producing a single ranked list, we examined a weighted linear combination approach to merging results. Our approach to known item retrieval was equal or above the median 58% of the time and 71% above the mean score of submitted runs. In the Arabic track we participated in Arabic Cross-language Information Retrieval (CLIR) and in Arabic monolingual information retrieval. For the monolingual retrieval, we examined the use of two stemming algorithms. The first is a deeper approach, and the second is a pattern-based approach. For the Arabic CLIR, we explored the retrieval effectiveness by using a machine translation (MT) system and translation probabilities obtained from parallel documents collection provided by the United Nations (UN).
Proceedings of the tenth international conference …, 2001
In Cross-Language Information Retrieval (CLIR), queries in one language retrieve relevant documen... more In Cross-Language Information Retrieval (CLIR), queries in one language retrieve relevant documents in other languages. Machine-Readable Dictionary (MRD) and Machine Translation (MT) are important resources for query translation in CLIR. We investigate MT and MRD to Arabic-English CLIR. The translation ambiguity associated with these resources is the key problem. We present three methods of query translation using a bilingual dictionary for Arabic-English CLIR. First, we present the Every-Match (EM) method. This method yields ambiguous translations since many extraneous terms are added to the original query. To disambiguate the query translation, we present the First-Match (FM) method that considers the first match in the dictionary as the candidate term. Finally, we present the Two-Phase (TP) method. We show that good retrieval effectiveness can be achieved without complex resources using the Two-Phase method for Arabic-English CLIR. We also empirically evaluate the effectiveness of the MT-based method using short, medium, and long queries from TREC. The effects of the query length on the quality of the MT-based CLIR are investigated.
… of the eleventh international conference on …, 2002