Publications & Presentations

Publications by topic

Publications by year

Publications by type

List of Publications & Presentations by Type

Adaptive Signal Processing & Information Theory Research Group
Drexel University
John MacLaren Walsh, Director

October 3, 2016

Submitted for Publication in a Journal

[1]   Jayant Apte and John MacLaren Walsh, “Explicit Polyhedral Bounds on Network Coding Rate Regions via Entropy Function Region: Algorithms, Symmetry, and Computation,” IEEE Trans. Inform. Theory, submitted on July 22, 2016. [Online]. Available: https://arxiv.org/abs/1607.06833

[2]   ——, “Constrained Linear Representability of Polymatroids and Algorithms for Computing Achievability Proofs in Network Coding,” IEEE Trans. Inform. Theory, submitted on May 15, 2016. [Online]. Available: http://arxiv.org/abs/1605.04598

[3]   Mengke Hu, David Cinciruk and John MacLaren Walsh, “Improving Automated Patent Claim Parsing: Dataset, System, and Experiments,” Computational Linguistics, submitted on May 05, 2016. [Online]. Available: http://arxiv.org/abs/1605.01744

[4]   Yunshu Liu and John MacLaren Walsh, “Mapping the Region of Entropic Vectors with Support Enumeration & Information Geometry,” IEEE Trans. Inform. Theory, submitted on December 08, 2015. [Online]. Available: http://arxiv.org/abs/1512.03324

[5]   Congduan Li, Steven Weber, and John MacLaren Walsh, “On Multi-source Networks: Enumeration, Rate Region Computation, and Hierarchy,” IEEE Trans. Inform. Theory, submitted on July 21, 2015. [Online]. Available: http://arxiv.org/abs/1507.05728

[6]   Nan Xie, John MacLaren Walsh, Steven Weber, “Properties of an Aloha-like stability region,” IEEE Trans. Inform. Theory, submitted on August 15, 2014. Reviews received June 22,2015.Revised September 21, 2015. [Online]. Available: http://arxiv.org/abs/1408.3469

[7]   Congduan Li, Steven Weber, and John MacLaren Walsh, “On Multilevel Diversity Coding Systems,” IEEE Trans. Inform. Theory, submitted on July 21, 2014. Reviews received January 6, 2016. [Online]. Available: http://arxiv.org/abs/1407.5659

[8]   C. Maina and J. M. Walsh, “Log Spectra Enhancement using Speaker Dependent Priors for Speaker Verification,” submitted March 14, 2011. Revised July 15, 2011. 2nd Review received September, 2011. Undergoing further revision.

Journal Publications

[1]   J. Ren, B. Boyle, G. Ku, S. Weber, and J. M. Walsh, “Overhead performance tradeoffs - a resource allocation perspective,” IEEE Trans. Inform. Theory, vol. 62, no. 6, pp. 3243–3269, June 2016. [Online]. Available: http://dx.doi.org/10.1109/TIT.2016.2524576

[2]   Gwanmo Ku, Jie Ren, and John MacLaren Walsh, “Computing the Rate Distortion Region for the CEO Problem with Independent Sources,” IEEE Trans. Signal Processing, vol. 63, no. 3, pp. 567–575, Feb. 2015. [Online]. Available: http://dx.doi.org/10.1109/TSP.2014.2379631

[3]   Bradford D. Boyle, Jie Ren, John MacLaren Walsh and Steven Weber, “Interactive Scalar Quantization for Distributed Extremization,” IEEE Trans. Signal Processing, vol. 64, no. 5, pp. 1243–1256, Mar. 2016. [Online]. Available: http://dx.doi.org/10.1109/TSP.2015.2483479

[4]   Gwanmo Ku and John MacLaren Walsh, “Resource Allocation and Link Adaptation in LTE & LTE Advanced: A Tutorial,” IEEE Communications Surveys and Tutorials, vol. 17, no. 3, pp. 1605–1633. [Online]. Available: http://dx.doi.org/10.1109/COMST.2014.2383691

[5]   S. Ramanan and J. M. Walsh, “Practical Codes for Collaborative Estimation,” IEEE Trans. Signal Processing, vol. 60, no. 6, pp. 3203–3216, Jun. 2012. [Online]. Available: http://dx.doi.org/10.1109/TSP.2012.2189765

[6]   J. M. Walsh and S. Weber, “A Recursive Construction of the Set of Binary Entropy Vectors and Related Inner Bounds for the Entropy Region,” IEEE Trans. Inform. Theory, vol. 57, no. 10, pp. 6356–6363, Oct. 2011. [Online]. Available: http://dx.doi.org/10.1109/TIT.2011.2165817

[7]   J. M. Walsh, S. P. Weber, J. C. de Oliveira, A. Eryilmaz, M. Médard, “Trading Rate for Delay at the Application and Transport Layers (Guest Editorial),” IEEE J. Select. Areas Commun., vol. 29, no. 5, pp. 913–915, May 2011. [Online]. Available: http://dx.doi.org/10.1109/JSAC.2011.110501

[8]   C. W. Maina and J. M. Walsh, “Joint speech enhancement and speaker identification using approximate bayesian inference,” Audio, Speech, and Language Processing, IEEE Transactions on, vol. 19, no. 6, pp. 1517–1529, 2011. [Online]. Available: http://dx.doi.org/10.1109/TASL.2010.2092767

[9]   J. M. Walsh and P. A. Regalia, “On the relationship between belief propagation decoding and joint maximum likelihood detection,” IEEE Trans. Commun., vol. 58, no. 10, pp. 2753–2758, Oct. 2010. [Online]. Available: http://dx.doi.org/10.1109/TCOMM.2010.082010.080138

[10]   J. M. Walsh and P. A. Regalia, “Belief Propagation, Dykstra’s Algorithm, and Iterated Information Projections,” IEEE Trans. Inform. Theory, vol. 56, no. 8, pp. 4114–4128, Aug. 2010. [Online]. Available: http://dx.doi.org/10.1109/TIT.2010.2050833

[11]   S. Ramanan and J. M. Walsh, “Distributed Estimation of Channel Gains in Wireless Sensor Networks,” IEEE Trans. Signal Processing, vol. 58, no. 6, pp. 3097–3107, Jun. 2010. [Online]. Available: http://dx.doi.org/10.1109/TSP.2010.2044840

[12]   J. M. Walsh, S. Weber, and C. wa Maina, “Optimal Rate Delay Tradeoffs and Delay Mitigating Codes for Multipath Routed and Network Coded Networks,” IEEE Trans. Inform. Theory, vol. 55, no. 12, pp. 5491–5510, Dec. 2009. [Online]. Available: http://dx.doi.org/10.1109/TIT.2009.2032851

[13]   P. A. Regalia and J. M. Walsh, “Optimality and Duality Aspects of the Turbo Decoder,” Proc. IEEE, vol. 95, no. 6, pp. 1362–1377, Jun. 2007. [Online]. Available: http://dx.doi.org/10.1109/JPROC.2007.896495

[14]   J. M. Walsh, P. A. Regalia, and C. R. Johnson, Jr., “Turbo Decoding as Iterative Constrained Maximum-Likelihood Sequence Detection,” IEEE Trans. Inform. Theory, vol. 52, no. 12, pp. 5426–5437, Dec. 2006. [Online]. Available: http://dx.doi.org/10.1109/TIT.2006.885535

[15]   R. K. Martin, J. M. Walsh, and C. R. Johnson, Jr., “Low complexity mimo blind, adaptive channel shortening,” IEEE Trans. Signal Processing, vol. 53, no. 4, pp. 1324–1334, Apr. 2005. [Online]. Available: http://dx.doi.org/10.1109/TSP.2005.843697

Conference Publications

[1]   Solmaz Torabi and John MacLaren Walsh, “Distributed Lossy Interactive Function Computation,” in 54th Annual Allerton Conference on Communication, Control, and Computing, Sep. 2016. [Online]. Available: http://www.ece.drexel.edu/walsh/TorabiAllerton16.pdf

[2]   Jayant Apte, Qi Chen, and John MacLaren Walsh, “Symmetries in Entropy Space,” in 2016 IEEE Information Theory Workshop (ITW), Sep. 2016, accepted. to appear.

[3]   Solmaz Torabi, Jie Ren and John MacLaren Walsh, “Practical Interactive Scheme for Extremum Computation in Distributed Networks,” in IEEE International Symposium on Information Theory (ISIT 2016), Jul. 2016. [Online]. Available: http://www.ece.drexel.edu/walsh/Solmaz_isit_2016.pdf

[4]   Solmaz Torabi and John MacLaren Walsh, “Interactive Quantization for Extremum Computation in Collocated Networks,” in Data Compression Conference (DCC 2016), Apr. 2016.

[5]   Yunshu Liu and John MacLaren Walsh, “Non-isomorphic Distribution Supports for Calculating Entropic Vectors,” in 53nd Annual Allerton Conference on Communication, Control, and Computing, Oct. 2015. [Online]. Available: http://www.ece.drexel.edu/walsh/Liu_Allerton_2015.pdf

[6]   Congduan Li, Steven Weber, John MacLaren Walsh, “Network combination operations preserving the sufficiency of linear network codes,” in IEEE Information Theory Workshop, Oct. 2015. [Online]. Available: http://www.ece.drexel.edu/walsh/Li_ITW_2015.pdf

[7]   Jayant Apte and John MacLaren Walsh, “Exploiting Symmetry in Computing Polyhedral Bounds on Network Coding Rate Regions,” in International Symposium on Network Coding (NetCod 2015), Jun. 2015. [Online]. Available: http://www.ece.drexel.edu/walsh/Jayant_NetCod15.pdf

[8]   Congduan Li, Steven Weber, John MacLaren Walsh, “Computer Aided Proofs for Rate Regions of Independent Distributed Source Coding Problems,” in International Symposium on Network Coding (NetCod 2015), Jun. 2015. [Online]. Available: http://www.ece.drexel.edu/walsh/Congduan_NetCod2015.pdf

[9]   Jayant Apte and John MacLaren Walsh, “Symmetry in Network Coding: formalization, graph-theoretic characterization, and computation,” in IEEE International Symposium on Information Theory (ISIT 2015), Jun. 2015. [Online]. Available: http://www.ece.drexel.edu/walsh/Apte_ISIT_2015.pdf

[10]   Congduan Li, Steven Weber, John MacLaren Walsh, “Network Embedding Operations Preserving the Insufficiency of Linear Network Codes,” in 52nd Annual Allerton Conference on Communication, Control, and Computing, Oct. 2014. [Online]. Available: http://www.ece.drexel.edu/walsh/Li_Allerton_2014.pdf

[11]   Jayant Apte, Congduan Li, and John MacLaren Walsh, “Algorithms for Computing Network Coding Rate Regions via Single Element Extensions of Matroids,” in IEEE International Symposium on Information Theory (ISIT 2014), Jul. 2014, pp. 2306–2310. [Online]. Available: http://www.ece.drexel.edu/walsh/Apte_ISIT_2014.pdf

[12]   Jayant Apte, Congduan Li, John MacLaren Walsh and Steven Weber, “Exact repair problems with multiple sources,” in The 48th annual IEEE Conference on Information Sciences and Systems(CISS), Mar. 2014. [Online]. Available: http://www.ece.drexel.edu/walsh/Jayant_cisspaper.pdf

[13]   Jie Ren and John M. Walsh, “Interactive communication for resource allocation,” in The 48th annual IEEE Conference on Information Sciences and Systems(CISS), Mar. 2014. [Online]. Available: http://www.ece.drexel.edu/walsh/JR_ciss2014.pdf

[14]   Bradford D. Boyle, John MacLaren Walsh and Steven Weber, “Distributed scalar quantizers for sub-band allocation,” in The 48th annual IEEE Conference on Information Sciences and Systems(CISS), Mar. 2014. [Online]. Available: http://www.ece.drexel.edu/walsh/Boyle-CISS-2014.pdf

[15]   Yunshu Liu, John MacLaren Walsh, “Bounding the entropic region via information geometry,” in IEEE Information Theory Workshop, Sep. 2013. [Online]. Available: http://www.ece.drexel.edu/walsh/ITW2013_Liu.pdf

[16]   Congduan Li, John MacLaren Walsh, Steven Weber, “Matroid bounds on the region of entropic vectors,” in 51th Annual Allerton Conference on Communication, Control and Computing, Oct. 2013. [Online]. Available: http://www.ece.drexel.edu/walsh/Congduan_allerton13.pdf

[17]   Congduan Li, Jayant Apte, John MacLaren Walsh, Steven Weber, “A new computational approach for determining rate regions and optimal codes for coded networks,” in The 2013 IEEE International Symposium on Network Coding (NetCod 2013), Jun. 2013. [Online]. Available: http://www.ece.drexel.edu/walsh/LiNetCod13.pdf

[18]   Bradford D. Boyle, John MacLaren Walsh, Steven Weber, “Channel dependent adaptive modulation and coding without channel state information at the transmitter,” in 38th International Conference on Acoustics, Speech, and Signal Processing (ICASSP), May 2013. [Online]. Available: http://www.ece.drexel.edu/walsh/BradICASSP13.pdf

[19]   Congduan Li, John MacLaren Walsh, Steven Weber, “A computational approach for determining rate regions and codes using entropic vector bounds,” in 50th Annual Allerton Conference on Communication, Control and Computing, Oct. 2012. [Online]. Available: http://www.ece.drexel.edu/walsh/Allerton2012LJW.pdf

[20]   Ciira wa Maina and John MacLaren Walsh, “Log Spectra Enhancement using Speaker Dependent Priors for Speaker Verification,” in IEEE International Conference on Acoustics, Speech, and Signal Processing (ICASSP 2011), May 2011. [Online]. Available: http://www.ece.drexel.edu/walsh/Maina_ICASSP_05_11.pdf

[21]   Sivagnanasundaram Ramanan and John MacLaren Walsh, “Practical Codes for Lossy Compression when Side Information May be Absent,” in IEEE International Conference on Acoustics, Speech, and Signal Processing (ICASSP 2011), May 2011. [Online]. Available: http://www.ece.drexel.edu/walsh/Ramanan_ICASSP_05_11.pdf

[22]   Ciira wa Maina and John MacLaren Walsh, “Compensating for Noise and Mismatch in Speaker Verification Systems Using Approximate Bayesian Inference,” in 45th Conference on Information Sciences and Systems CISS 2011, Mar. 2011. [Online]. Available: http://dx.doi.org/10.1109/CISS.2011.5766174

[23]   Gwanmo Ku and John MacLaren Walsh, “Power Amplifier Nonlinearity Effects on OFDM Subcarrier Transmit Beamforming,” in IEEE Wireless Communications and Networking Conference (WCNC), Mar. 2011. [Online]. Available: http://dx.doi.org/10.1109/WCNC.2011.5779458

[24]   Sivagnanasundaram Ramanan and John MacLaren Walsh, “Coding Perspectives for Collaborative Distributed Estimation Over Networks,” in 2010 Asilomar Conference on Signals, Systems, and Computers, Nov. 2010. [Online]. Available: http://www.ece.drexel.edu/walsh/Ramanan_Asilomar10.pdf

[25]   John MacLaren Walsh and Steven Weber, “Relationships Among Bounds for the Region of Entropic Vectors in Four Variables,” in 2010 Allerton Conference on Communication, Control, and Computing, Sep. 2010. [Online]. Available: http://www.ece.drexel.edu/walsh/allerton10.pdf

[26]   Ciira wa Maina and John MacLaren Walsh, “Joint Speech Enhancement and Speaker Identification Using Approximate Bayesian Inference,” in 44th Annual Conference on Information Sciences and Systems, Mar. 2010. [Online]. Available: http://www.ece.drexel.edu/walsh/Maina_CISS_10.pdf

[27]   John MacLaren Walsh and Steven Weber, “A Recursive Construction of the Set of Binary Entropy Vectors,” in Forty-Seventh Annual Allerton Conference on Communication, Control, and Computing, Sep. 2009, pp. 545–552. [Online]. Available: http://www.ece.drexel.edu/walsh/binEntSetConf-v5-JW.pdf

[28]   Ciira wa Maina and John MacLaren Walsh, “Joint Speech Enhancement and Speaker Identification Using Monte Carlo Methods,” in Interspeech 2009, Sep. 2009. [Online]. Available: http://www.ece.drexel.edu/walsh/Maina_Interspeech_09.pdf

[29]   S. Ramanan and J. M. Walsh, “Distributed Estimation of Channel Gains in Wireless Sensor Networks,” in Forty-Second Asilomar Conference on Signals, Systems, and Computers, Oct. 2008. [Online]. Available: http://www.ece.drexel.edu/walsh/Ramanan_Asilomar_08.pdf

[30]   J. M. Walsh and S. Weber, “Capacity Region of the Permutation Channel,” in 46th Annual Allerton Conference on Communication, Control, and Computing, Sep. 2008. [Online]. Available: http://www.ece.drexel.edu/walsh/walshAllerton08.pdf

[31]   J. M. Walsh, P. A. Regalia, and S. Ramanan, “Optimality of Expectation Propagation Based Distributed Estimation for Wireless Sensor Network Initialization,” in 9th IEEE Workshop on Signal Processing Advances in Wireless Communications (SPAWC), Jul. 2008, pp. 620 – 624. [Online]. Available: http://www.ece.drexel.edu/walsh/WalshSpawc08.pdf

[32]   J. M. Walsh, S. Weber, and C. Maina, “Optimal Rate Delay Tradeoffs for Multipath Routed and Network Coded Networks,” in IEEE International Symposium on Information Theory (ISIT), Jul. 2008, pp. 682 – 686. [Online]. Available: http://www.ece.drexel.edu/walsh/WalshIsit08.pdf

[33]   J. M. Walsh and P. A. Regalia, “Belief propagation distributed estimation in sensor networks: An optimized energy accuracy tradeoff,” in IEEE International Conference on Acoustics, Speech, and Signal Processing, Apr. 2008, pp. 2297 – 2300. [Online]. Available: http://www.ece.drexel.edu/walsh/sensNetEst.pdf

[34]   Y. E. Kim, J. M. Walsh, and T. M. Doll, “Comparison of a Joint Iterative Method for Multiple Speaker Identification with Sequential Blind Source Separation and Speaker Identification,” in Odyssey 2008: The Speaker and Language Recognition Workshop, Jan. 2008. [Online]. Available: http://www.ece.drexel.edu/walsh/Odyssey2008.pdf

[35]   J. M. Walsh and S. Weber, “A Concatenated Network Coding Scheme for Multimedia Transmission,” in Fourth Workshop on Network Coding, Theory, and Applications (Netcod 2008), Jan. 2008, pp. 91–96. [Online]. Available: http://www.ece.drexel.edu/walsh/netcod08.pdf

[36]   J. M. Walsh, “A completed information projection interpretation of expectation propagation,” in Neural Information Processing Systems Workshop on Approximate Bayesian Inference in Continuous/Hybrid Systems, 2007. [Online]. Available: http://www.ece.drexel.edu/walsh/epInfProjNips07.pdf

[37]   J. M. Walsh and S. Weber, “Coding to reduce delay on a permutation channel,” in 45th Allerton Conference on Communication, Control, and Computing, Sep. 2007. [Online]. Available: http://www.ece.drexel.edu/walsh/allerton07.pdf

[38]   J. M. Walsh, Y. E. Kim, and T. M. Doll, “Joint iterative multi-speaker identification and source separation using expectation propagation,” in IEEE Workshop on Applications of Signal Processing to Audio and Acoustics, Oct. 2007, pp. 283 – 286. [Online]. Available: http://www.ece.drexel.edu/walsh/waspaa07.pdf

[39]   J. M. Walsh and P. A. Regalia, “Expectation propagation for distributed estimation in sensor networks,” in 8th IEEE International Workshop on Signal Processing Advances for Wireless Communications (SPAWC), Helsinki, Finland, Jun. 2007. [Online]. Available: http://www.ece.drexel.edu/walsh/spawc07.pdf

[40]   J. M. Walsh, “EXIT and Density Evolution Analysis for Homogeneous Expectation Propagation,” in IEEE International Symposium on Information Theory, Nice, France, Jul. 2007, pp. 876–880. [Online]. Available: http://www.ece.drexel.edu/walsh/isit07.pdf

[41]   ——, “Density evolution for expectation propagation,” in International Conference on Acoustics, Speech, and Signal Processing (ICASSP), vol. 2, Honolulu, Hawaii, Apr. 2007, pp. II–545 – II–548. [Online]. Available: http://www.ece.drexel.edu/walsh/icassp07.pdf

[42]   ——, “Dual optimality frameworks for expectation propagation,” in Proc. Seventh IEEE Int. Conf. on Sig. Proc. Adv. in Wireless Comm. (SPAWC), Jul. 2006. [Online]. Available: http://www.ece.drexel.edu/walsh/spawc06.pdf

Invited Conference Publications

[1]   Steven Weber, Congduan Li, John MacLaren Walsh, “Rate Region for A Class of Delay Mitigating Codes and P2P Networks,” in 46th Annual Conference on Information Sciences and Systems, Mar. 2012. [Online]. Available: http://dx.doi.org/10.1109/CISS.2012.6310926

[2]   Ciira wa Maina and John MacLaren Walsh, “Approximate Bayesian Robust Speech Processing,” in 45th Annual Asilomar Conference of Signals, Systems, and Computers, Nov. 2011. [Online]. Available: http://www.ece.drexel.edu/walsh/Maina_Asilomar_11.pdf

[3]   C. wa Maina and J. M. Walsh, “A Cost Function Level Analysis of Autocorrelation Minimization Based Blind Adaptive Channel Shorteners,” in Forty-Second Asilomar Conference on Signals, Systems, and Computers, Oct. 2008, Invited Paper. [Online]. Available: http://www.ece.drexel.edu/walsh/Maina_Asilomar_08.pdf

[4]   J. M. Walsh, R. K. Martin, and C. R. Johnson, Jr., “Convergence and Performance Issues for Autocorrelation Based Adaptive Channel Shortening,” in Fortieth Asilomar Conference on Signals, Systems, and Computers, Nov. 2006, pp. 238–242, Invited Paper. [Online]. Available: http://www.ece.drexel.edu/walsh/samConvPerf.pdf

Theses and Dissertations

[1]   Jayant Apte, “Algorithms for computing limits on information flow and storage in networks,” Ph.D. dissertation, Drexel University, Philadelphia, PA, 2016. [Online]. Available: http://www.ece.drexel.edu/walsh/JayantApte_thesis.pdf

[2]   Jie Ren, “Control Overhead Optimization in Wireless Resource Allocation Problems,” Ph.D. dissertation, Drexel University, Philadelphia, PA, 2016. [Online]. Available: http://www.ece.drexel.edu/walsh/JieRen_Thesis.pdf

[3]   Yunshu Liu, “Extremal Entropy: Information Geometry, Numerical Entropy Mapping, and Machine Learning Application of Associated Conditional Independences,” Ph.D. dissertation, Drexel University, Philadelphia, PA, 2016. [Online]. Available: http://www.ece.drexel.edu/walsh/YunshuLiu_thesis.pdf

[4]   Congduan Li, “On Multi-source Multi-Sink Hyperedge Networks: Enumeration, Rate Region Computation, and Hierarchy,” Ph.D. dissertation, Drexel University, Philadelphia, PA, 2015. [Online]. Available: http://www.ece.drexel.edu/walsh/CongduanLi_Thesis.pdf

[5]   Gwanmo Ku, “Efficient Control Signaling for Resource Allocation in OFDMA Networks,” Ph.D. dissertation, Drexel University, Philadelphia, PA, 2014. [Online]. Available: http://www.ece.drexel.edu/walsh/Ku_PhD.pdf

[6]   Sivagnanasundaram Ramanan, “Collaborative Estimation in Networks,” Ph.D. dissertation, Drexel University, Philadelphia, PA, 2011. [Online]. Available: http://www.ece.drexel.edu/walsh/Ramanan_PhD.pdf

[7]   Ciira wa Maina, “Approximate Bayesian Inference for Robust Speech Processing,” Ph.D. dissertation, Drexel University, Philadelphia, PA, 2011. [Online]. Available: http://www.ece.drexel.edu/walsh/Maina_PhD.pdf

Invited Presentations and Demonstrations

[1]   John MacLaren Walsh, “Calculating rate regions for network coding and distributed storage via polyhedral projection and representable matroid enumeration,” Feb. 2014, 2014 Information Theory and Applications Workshop, University of California San Diego. [Online]. Available: http://www.ece.drexel.edu/walsh/WalshITA14.pdf

[2]   ——, “Information Geometry, Polyhedral Computation, and Entropic Vectors,” in First Workshop on Entropy and Information Inequalities, The Chinese University of Hong Kong, Apr. 2013. [Online]. Available: http://www.youtube.com/watch?v=gYkS73jyvPU&feature=youtu.be

[3]   ——, “Entropic Vectors: Polyhedral Computation and Information Geometry,” Feb. 2013, 2013 Information Theory and Applications Workshop, University of California San Diego. [Online]. Available: http://www.ece.drexel.edu/walsh/WalshITA13.pdf

[4]   John MacLaren Walsh, S. Weber, L. Cimini, J. Garcia-Frias, “Overhead Performance Tradeoffs in Distributed Wireless Networks,” Dec. 2012, AFOSR Complex Networks Program Review. [Online]. Available: http://www.ece.drexel.edu/walsh/cnReview-Dec12.pdf

[5]   John MacLaren Walsh, “Characterizing the Region of Entropic Vectors via Information Geometry,” Feb. 2012, 2012 Information Theory and Applications Workshop (ITA). [Online]. Available: http://www.ece.drexel.edu/walsh/walshITA12.pdf

[6]   John MacLaren Walsh and Sivagnanasundaram Ramanan, “Fundamental Limits and Practical Codes for Collaborative Estimation,” Feb. 2011, 2011 Information Theory and Applications Workshop (ITA), University of California San Diego. [Online]. Available: http://www.ece.drexel.edu/walsh/walshITA11.pdf

[7]   Leonard J. Cimini, John MacLaren Walsh, and Steven Weber, “Energy Efficient Distributed Wireless Resource Allocation,” Nov. 2010, Air Force Office of Scientific Research Complex Network Program Review. [Online]. Available: http://www.ece.drexel.edu/walsh/ciminiAFOSR10.pdf

[8]   John MacLaren Walsh and Sivagnanasundaram Ramanan, “Perspectives for Collaborative Estimation over Networks,” Jul. 2010, Presentation to McGill University ECE Dept. [Online]. Available: http://www.ece.drexel.edu/walsh/walshMcGill10.pdf

[9]   John MacLaren Walsh and Steven Weber, “Tunable Inner Bounds for the Region of Entropy Vectors,” Feb. 2010, 2010 Information Theory and Applications Workshop, University of California San Diego. [Online]. Available: http://www.ece.drexel.edu/walsh/walshITA10.pdf

[10]   Ciira wa Maina and John MacLaren Walsh, “Robust Speaker Recognition Using Approximate Bayesian Inference,” Dec. 2009, Demonstration at Neural Information Processing Symposium (NIPS) 2009.

[11]   John MacLaren Walsh and Sivagnanasundaram Ramanan, “Perspectives for Collaborative Estimation over Networks,” Nov. 2009, Presentation to University of Delaware ECE Dept. [Online]. Available: http://www.ece.drexel.edu/walsh/walshDelaware09.pdf

[12]   John MacLaren Walsh and Steven Weber, “An Inner Bound Technique on the Normalized Set of Entropy Vectors,” Sep. 2009, DARPA ITMANET Meeting, MIT. [Online]. Available: http://www.ece.drexel.edu/walsh/weberITMANET0909.pdf

[13]   ——, “Properties of the Binary Entropy Vector Region,” Mar. 2009, DARPA ITMANET Meeting, Stanford University. [Online]. Available: http://www.ece.drexel.edu/walsh/weberITMANET0309.pdf

[14]   John MacLaren Walsh, Steven Weber, Drakontas LLC, “Optimal Coded Information Network Design and Management via Improved Characterizations of the Binary Entropy Function,” Feb. 2009, Air Force Office of Scientific Research Complex Network Program Review. [Online]. Available: http://www.ece.drexel.edu/walsh/walshAFOSR09.pdf

[15]   John MacLaren Walsh and Steven Weber, “ Capacity Region of the Permutation Channel ,” Sep. 2008, DARPA ITMANET Meeting, Arlington, VA. [Online]. Available: http://www.ece.drexel.edu/walsh/weberITMANET0908poster.pdf

[16]   ——, “Fundamental Rate Delay Tradeoffs in Multipath Routed and Network Coded Networks,” Sep. 2008, DARPA ITMANET Meeting, Arlington, VA. [Online]. Available: http://www.ece.drexel.edu/walsh/weberITMANET0908.pdf

[17]   Phil Regalia and John MacLaren Walsh, “Information Projection Algorithms and Belief Propagation,” Jun. 2008, P. Dewilde Workshop, Wassenaar. [Online]. Available: http://www.ece.drexel.edu/walsh/regalia-wassenaar-talk.pdf

[18]   John MacLaren Walsh, “Belief Propagation, Information Projections, and Dykstra’s Algorithm,” Apr. 2008, MIT Workshop on Geometric Approaches in Communications and Signal Processing. [Online]. Available: http://www.ece.drexel.edu/walsh/walshMITW08.pdf

[19]   John MacLaren Walsh and Steven Weber, “Fundamental Rate Delay Tradeoffs in Multipath Routed and Network Coded Networks,” Apr. 2008, MIT Workshop on Geometric Approaches in Communications and Signal Processing. [Online]. Available: http://www.ece.drexel.edu/walsh/weberMITW08.pdf

Group Meeting Presentations

[1]   D. Cinciruk, “Using amazon mechanical turk for data collection in parts of speech tag correction for patent claims,” Presentation to ASPITRG 04/27/2015, 04/29/2015. [Online]. Available: http://www.ece.drexel.edu/walsh/David_turkpresentation.pdf

[2]   S. Torabi, “The role of feedback in communications,” Presentation to ASPITRG 03/09/2015, 03/30/2015,04/01/2015. [Online]. Available: http://www.ece.drexel.edu/walsh/Solmaz_FeedbackComm.pdf

[3]   D. Cinciruk, “Patent summarization and paraphrasing,” Presentation to ASPITRG 02/23/2015, 02/25/2015. [Online]. Available: http://www.ece.drexel.edu/walsh/David_PatentSummarization.pdf

[4]   M. Hu, “Patent maintenance recommendation system,” Presentation to ASPITRG 02/09/2015, 02/11/2015. [Online]. Available: http://www.ece.drexel.edu/walsh/Mengke_PatentMaintenance.pdf

[5]   J. Apte, “Mckay’s algorithm for isomorph-free exhaustive generation,” Presentation to ASPITRG 01/14/2015, 01/21/2015. [Online]. Available: http://www.ece.drexel.edu/walsh/Jayant_Mckay.pdf

[6]   ——, “Solving rota’s conjecture part 1: Graph and matroid wqo theorems,” Presentation to ASPITRG 11/17/2014, 11/19/2014. [Online]. Available: http://www.ece.drexel.edu/walsh/Jayant_RotaConjecture1.pdf

[7]   J. Ren, “Introduction to communication complexity,” Presentation to ASPITRG 11/03/2014,11/05/2014,11/10/2014,11/12/2014. [Online]. Available: http://www.ece.drexel.edu/walsh/Jie_CommComplexity.pdf

[8]   Y. Liu, “Entropy region and convolution,” Presentation to ASPITRG 10/20/2014, 10/22/2014. [Online]. Available: http://www.ece.drexel.edu/walsh/Yunshu_Convolution.pdf

[9]   J. Apte, “Partition symmetrical entropy functions part 1,” Presentation to ASPITRG 09/29/2014, 10/01/2014. [Online]. Available: http://www.ece.drexel.edu/walsh/Jayant_partitionSymm.pdf

[10]   C. Li, “U(2,4): the only forbidden minor for binary matroids,” Presentation to ASPITRG 09/22/2014,09/24/2014. [Online]. Available: http://www.ece.drexel.edu/walsh/Congduan_U24minor.pdf

[11]   M. Hu and D. Cinciruk, “Patent analysis experiments,” Presentation to ASPITRG 08/04/2014, 08/06/2014. [Online]. Available: http://www.ece.drexel.edu/walsh/MengkeDavid_PatAnalysisSummer.pdf

[12]   J. Ren, “Quantization design,” Presentation to ASPITRG 07/28/2014,07/30/2014. [Online]. Available: http://www.ece.drexel.edu/walsh/Jie_QuantizationDesign.pdf

[13]   S. Torabi, “Introduction to mean field theory,” Presentation to ASPITRG 07/21/2014, 07/23/2014. [Online]. Available: http://www.ece.drexel.edu/walsh/Solmaz_MeanFieldTheory.pdf

[14]   J. Apte, “Exploiting symmetry in linear programming,” Presentation to ASPITRG 06/17/2014, 06/19/2014. [Online]. Available: http://www.ece.drexel.edu/walsh/Jayant_symmLPtalk.pdf

[15]   S. Torabi, “Free energy approximation,” Presentation to ASPITRG 06/10/2014, 06/12/2014. [Online]. Available: http://www.ece.drexel.edu/walsh/Solmaz_FreeEnergy.pdf

[16]   Y. Liu, “An intro. to dual decomposition for inference,” Presentation to ASPITRG 05/06/2014, 05/13/2014. [Online]. Available: http://www.ece.drexel.edu/walsh/Yunshu_DualDecomposition.pdf

[17]   M. Hu and D. Cinciruk, “An introduction to the patent field,” Presentation to ASPITRG 04/29/2014, 05/01/2014. [Online]. Available: http://www.ece.drexel.edu/walsh/MengkeDavid_Patent.pdf

[18]   J. Ren, “Space time coding,” Presentation to ASPITRG 04/22/2014,04/24/2014. [Online]. Available: http://www.ece.drexel.edu/walsh/Jiespacetimecodes.pdf

[19]   C. Li, “The simplest index coding problem requiring a non-shannon inequality,” Presentation to ASPITRG 04/15/2014. [Online]. Available: http://www.ece.drexel.edu/walsh/Congduan_IndexCoding04152014.pdf

[20]   Y. Liu, “An intro. to independence models with focus on gaussian distributional framework,” Presentation to ASPITRG 03/04/2014, 03/06/2014. [Online]. Available: http://www.ece.drexel.edu/walsh/Yunshu_IndependentModels.pdf

[21]   J. Apte, “Introduction to polyhedral description conversion up to symmetries,” Presentation to ASPITRG 02/25/2014,02/27/2014. [Online]. Available: http://www.ece.drexel.edu/walsh/Jayant_PolySym.pdf

[22]   C. Li, “An equivalence between network coding and index coding,” Presentation to ASPITRG 02/18/2014, 02/20/2014. [Online]. Available: http://www.ece.drexel.edu/walsh/Congduan_EquivalemceBTWNC.pdf

[23]   J. Apte, “Introduction to entropic inequalities and marginal problems,” Presentation to ASPITRG 11/26/2013. [Online]. Available: http://www.ece.drexel.edu/walsh/Jayant_Marginal.pdf

[24]   Y. Liu, “An intro. to information geometric view of belief propagation,” Presentation to ASPITRG 10/17/2013, 10/22/2013. [Online]. Available: http://www.ece.drexel.edu/walsh/Yunshu_InfoGeoBeliefPropagation.pdf

[25]   ——, “An intro. to graphical models and message passing,” Presentation to ASPITRG 07/16/2013, 07/30/2013, 08/01/2013. [Online]. Available: http://www.ece.drexel.edu/walsh/Yunshu_GPnBP.pdf

[26]   J. Apte, “Introduction to network coding for distributed storage systems,” Presentation to ASPITRG 07/09/2013, 07/11/2013. [Online]. Available: http://www.ece.drexel.edu/walsh/Jayant_NC4DSS.pdf

[27]   G. Ku, “Limited feedback in wireless communication systems,” Presentation to ASPITRG 05/14/2013, 05/17/2013, 05/21/2013. [Online]. Available: http://www.ece.drexel.edu/walsh/Gwanmo_LimitedFeedbackMay2013.pdf

[28]   J. Ren, “Variable-rate channel capacity,” Presentation to ASPITRG 04/26/2013,04/30/2013, 05/03/2013, 05/07/2013. [Online]. Available: http://www.ece.drexel.edu/walsh/Jie_VariableRate.pdf

[29]   J. Apte, “Introduction to polyhedral description conversion up to symmetries(focus on group theory),” Presentation to ASPITRG 03/26/2013, 03/29/2013. [Online]. Available: http://www.ece.drexel.edu/walsh/Jayant_PDC.pdf

[30]   Y. Liu, “An intro. to non-shannon information inequalities of four random variables,” Presentation to ASPITRG 03/13/2013, 03/15/2013. [Online]. Available: http://www.ece.drexel.edu/walsh/Yunshu_4atoms.pdf

[31]   D. Cinciruk, “Introduction to nuisance attribute projection,” Presentation to ASPITRG 03/08/2013. [Online]. Available: http://www.ece.drexel.edu/walsh/David_NAP2.pdf

[32]   ——, “Introduction to support vector machines and speaker verification,” Presentation to ASPITRG 03/06/2013. [Online]. Available: http://www.ece.drexel.edu/walsh/David_SVM.pdf

[33]   Y. Liu, “An intro. to conditional independence relations,” Presentation to ASPITRG 02/20/2013, 02/22/2013. [Online]. Available: http://www.ece.drexel.edu/walsh/Yunshu_CIR.pdf

[34]   MengkeHu, “Joint factor analysis,” Presentation to ASPITRG 02/06/2013, 02/08/2013. [Online]. Available: http://www.ece.drexel.edu/walsh/Mengke_JFA2.pdf

[35]   C. Li, “Inequalities for shannon entropy and linear ranks (an intro),” Presentation to ASPITRG 01/30/2013, 02/01/2013. [Online]. Available: http://www.ece.drexel.edu/walsh/Conduan_LinearRanks.pdf

[36]   G. Ku, “Ofdma resource control,” Presentation to ASPITRG 01/25/2013. [Online]. Available: http://www.ece.drexel.edu/walsh/GwanmoOFDMA.pdf

[37]   J. Ren, “Rateless codes,” Presentation to ASPITRG 01/16/2013,01/18/2013, 01/23/2013. [Online]. Available: http://www.ece.drexel.edu/walsh/Jie_Rateless.pdf

[38]   D. Cinciruk, “Introduction to feature mapping,” Presentation to ASPITRG 01/11/2013. [Online]. Available: http://www.ece.drexel.edu/walsh/David_Feature.pdf

[39]   MengkeHu, “Comparasion between jfa, fdic and fnap,” Presentation to ASPITRG 01/09/2013. [Online]. Available: http://www.ece.drexel.edu/walsh/Mengke_FDIC.pdf

[40]   G. Ku, “Gaussian mimo broadcast channel,” Presentation to ASPITRG 11/30/2012. [Online]. Available: http://www.ece.drexel.edu/walsh/GwanmoMIMO.pdf

[41]   J. Ren, “Coding for computation,” Presentation to ASPITRG 11/14/2012,11/16/2012,11/28/2012. [Online]. Available: http://www.ece.drexel.edu/walsh/Jie_Codingforcomputation.pdf

[42]   G. Ku, “General broadcast channel and dirty paper coding(an intro),” Presentation to ASPITRG 10/17/2012, 10/19/2012, 10/24/2012, 11/09/2012. [Online]. Available: http://www.ece.drexel.edu/walsh/GwanmoDirtypaper.pdf

[43]   MengkeHu, “Joint factor analysis for speaker verification,” Presentation to ASPITRG 10/10/2012, 10/12/2012. [Online]. Available: http://www.ece.drexel.edu/walsh/MengkeJFA.pdf

[44]   J. Apte, “Introduction to polyhedral computation,” Presentation to ASPITRG 10/03/2012, 10/05/2012. [Online]. Available: http://www.ece.drexel.edu/walsh/JayantCHM.pdf

[45]   J. Ren, “Interactive communication,” Presentation to ASPITRG 08/15/2012, 08/17/2012,08/22/2012,08/27/2012, 08/29/2012. [Online]. Available: http://www.ece.drexel.edu/walsh/Jie_InteractiveCommunication.pdf

[46]   E. Oyekanlu, “Collaborative estimation on distributed networks,” Presentation to ASPITRG 08/03/2012, 08/08/2012, 08/10/2012. [Online]. Available: http://www.ece.drexel.edu/walsh/EO_CollaborativeEstimation.pdf

[47]   MengkeHu, “Log spectra enhancement for speaker verification,” Presentation to ASPITRG 7/25/2012, 08/01/2012. [Online]. Available: http://www.ece.drexel.edu/walsh/MengkeLogSpec.pdf

[48]   D. Cinciruk, “Introduction to nuisance attribute projection,” Presentation to ASPITRG 07/13/2012, 07/17/2012, 07/20/2012. [Online]. Available: http://www.ece.drexel.edu/walsh/DavidNAP.pdf

[49]   J. Apte, “Introduction to lexicographic reverse search(lrs),” Presentation to ASPITRG 06/29/2012, 07/11/2012. [Online]. Available: http://www.ece.drexel.edu/walsh/JayantLRS.pdf

[50]   MengkeHu, “Autotools tutorial,” Presentation to ASPITRG 06/22/2012, 06/27/2012. [Online]. Available: http://www.ece.drexel.edu/walsh/Mengkeautotools.pdf

[51]   G. Ku, “Adaptive modulation and coding in lte (an intro),” Presentation to ASPITRG 06/15/2012. [Online]. Available: http://www.ece.drexel.edu/walsh/Gwanmo061512.pdf

[52]   J. Apte, “Introduction to cuda c,” Presentation to ASPITRG 11/18/2011. [Online]. Available: http://www.ece.drexel.edu/walsh/JayantCUDA.pdf

[53]   C. Li, “Networks and matroids (an intro),” Presentation to ASPITRG 05/25/2012, 06/01/2012. [Online]. Available: http://www.ece.drexel.edu/walsh/Congduan_NetworkMatroids.pdf

[54]   ——, “Network fundamentals (an intro),” Presentation to ASPITRG 05/11/2012. [Online]. Available: http://www.ece.drexel.edu/walsh/Congduan_NetworkFunds.pdf

[55]   G. Ku, “Overview of scheduling in lte (an intro),” Presentation to ASPITRG 04/27/2012. [Online]. Available: http://www.ece.drexel.edu/walsh/Gwanmo042712.pdf

[56]   Y. Liu, “An intro. to manifold of probability distribution,” Presentation to ASPITRG 04/13/2012, 04/20/2012. [Online]. Available: http://www.ece.drexel.edu/walsh/Yunshu_InfoProjection.pdf

[57]   D. Cinciruk, “An intro. to speaker recognition,” Presentation to ASPITRG 02/24/12. [Online]. Available: http://www.ece.drexel.edu/walsh/David_SpeakerRecognition.pdf

[58]   Y. Liu, “An intro. to differential geometry and information geometry,” Presentation to ASPITRG01/20/2012, 01/27/2012, 02/10/2012, 02/17/2012. [Online]. Available: http://www.ece.drexel.edu/walsh/Yunshu_InformationGeometry.pdf

[59]   C. Li, “An intro. to matroid operations,” Presentation to ASPITRG 11/18/2011, 12/02/2011. [Online]. Available: http://www.ece.drexel.edu/walsh/Congduan-Matroid1.pdf

[60]   G. Ku, “Resource allocation in the lte standard (an intro),” Presentation to ASPITRG 11/11/2011. [Online]. Available: http://www.ece.drexel.edu/walsh/Gwanmo-Nov11-2.pdf

[61]   ——, “An introduction to the lte phy,” Presentation to ASPITRG 11/4/2011. [Online]. Available: http://www.ece.drexel.edu/walsh/Gwanmo-Nov4.pdf

[62]   C. Li, “An introduction to matroids,” Presentation to ASPITRG 10/21/2011, 10/28/2011. [Online]. Available: http://www.ece.drexel.edu/walsh/Congduan-Matroid_Presentation_2.pdf