Presentation at the 11th International Conference on Business Process Management (BPM'2013), Beijing, China, 27 August 2013. Winner of the best paper award.
Thermo-compression bonding (TCB) is an alternative to traditional C4 flip-chip bonding that can overcome challenges like ultra-fine pitch bonding and warped dies. TCB requires higher bonding forces and placement accuracy than C4. Besi/Datacon uses a mechatronic approach with light machines, proper kinematics, and enhanced control to achieve high speeds and placement accuracy. This also allows for automatic tilt adjustment and dual-head bonding, improving throughput. For high-volume production, TCB bonding needs to match C4's reliability and productivity while maintaining yield, which will require further development to guarantee consistent performance across tools.
Using BPM to Prioritize Service CreationSandy Kemsley
This document discusses how business process management (BPM) and service-oriented architecture (SOA) work together to prioritize service creation. It recommends taking a top-down approach, where key business processes are mapped first to identify required high-level business services, then decomposing those services to the lowest reusable level. This ensures services align with business needs and processes can be designed around available services. The document concludes that jointly considering BPM and SOA yields the best results, with process requirements driving the definition of reusable services.
The document summarizes the design for manufacturability and assembly of an endoscopic camera called the endogo®. It discusses the baseline design model created using Extend software and metrics like cycle time, inventory turns, and DFA index. It then describes proposed changes to the design like part count reduction, estimated assembly times, quality estimates, and material selection to improve manufacturability.
Klessydra t - designing vector coprocessors for multi-threaded edge-computing...RISC-V International
The document describes a proposed Klessydra-T1 vector coprocessor architecture designed for multi-threaded edge computing cores. It achieves a 3x speedup over a baseline core through configurable SIMD and MIMD vector acceleration schemes. Benchmark results show cycle count reductions for workloads like convolution and matrix multiplication when using the coprocessor in various SISD, SIMD, and MIMD configurations. Resource utilization and maximum frequency are also analyzed.
Learning Accurate Business Process Simulation Models from Event Logs via Auto...Marlon Dumas
Paper presentation at the International Conference on Advanced Information Systems Engineering (CAiSE).
This paper presents an approach to automatically discover business process simulation models from event logs by combining process mining and deep learning techniques.
Paper available at: https://link.springer.com/chapter/10.1007/978-3-031-07472-1_4
Dinesh Goonarathne led a Six Sigma project to reduce defects in Alumex PLC's powder coating process. The project team measured a defect rate of 6.82% in June, which improved to 4.93% in July after analyzing root causes. Low and high micron thickness and water deposits were identified as main issues. Process controls like monitoring pretreatment chemical concentrations helped maintain the lower defect rate. This improved productivity, increasing profits by over 37 million LKR compared to June's performance.
The document discusses optimization of micro-machining processes. It outlines various micro-machining processes like electric discharge machining (EDM), abrasive water jet machining (AWJM), and micro-milling. It formulates optimization problems to maximize material removal rate and minimize surface roughness for EDM and to minimize taper angle and surface roughness for AWJM. Multi-cohort intelligence is proposed as an optimization technique and shown to find better solutions than genetic algorithm, simulated annealing, particle swarm optimization and other methods for the problems formulated. Tool-based micro-machining processes like micro-milling are also discussed for miniaturized manufacturing.
Thermo-compression bonding (TCB) is an alternative to traditional C4 flip-chip bonding that can overcome challenges like ultra-fine pitch bonding and warped dies. TCB requires higher bonding forces and placement accuracy than C4. Besi/Datacon uses a mechatronic approach with light machines, proper kinematics, and enhanced control to achieve high speeds and placement accuracy. This also allows for automatic tilt adjustment and dual-head bonding, improving throughput. For high-volume production, TCB bonding needs to match C4's reliability and productivity while maintaining yield, which will require further development to guarantee consistent performance across tools.
Using BPM to Prioritize Service CreationSandy Kemsley
This document discusses how business process management (BPM) and service-oriented architecture (SOA) work together to prioritize service creation. It recommends taking a top-down approach, where key business processes are mapped first to identify required high-level business services, then decomposing those services to the lowest reusable level. This ensures services align with business needs and processes can be designed around available services. The document concludes that jointly considering BPM and SOA yields the best results, with process requirements driving the definition of reusable services.
The document summarizes the design for manufacturability and assembly of an endoscopic camera called the endogo®. It discusses the baseline design model created using Extend software and metrics like cycle time, inventory turns, and DFA index. It then describes proposed changes to the design like part count reduction, estimated assembly times, quality estimates, and material selection to improve manufacturability.
Klessydra t - designing vector coprocessors for multi-threaded edge-computing...RISC-V International
The document describes a proposed Klessydra-T1 vector coprocessor architecture designed for multi-threaded edge computing cores. It achieves a 3x speedup over a baseline core through configurable SIMD and MIMD vector acceleration schemes. Benchmark results show cycle count reductions for workloads like convolution and matrix multiplication when using the coprocessor in various SISD, SIMD, and MIMD configurations. Resource utilization and maximum frequency are also analyzed.
Learning Accurate Business Process Simulation Models from Event Logs via Auto...Marlon Dumas
Paper presentation at the International Conference on Advanced Information Systems Engineering (CAiSE).
This paper presents an approach to automatically discover business process simulation models from event logs by combining process mining and deep learning techniques.
Paper available at: https://link.springer.com/chapter/10.1007/978-3-031-07472-1_4
Dinesh Goonarathne led a Six Sigma project to reduce defects in Alumex PLC's powder coating process. The project team measured a defect rate of 6.82% in June, which improved to 4.93% in July after analyzing root causes. Low and high micron thickness and water deposits were identified as main issues. Process controls like monitoring pretreatment chemical concentrations helped maintain the lower defect rate. This improved productivity, increasing profits by over 37 million LKR compared to June's performance.
The document discusses optimization of micro-machining processes. It outlines various micro-machining processes like electric discharge machining (EDM), abrasive water jet machining (AWJM), and micro-milling. It formulates optimization problems to maximize material removal rate and minimize surface roughness for EDM and to minimize taper angle and surface roughness for AWJM. Multi-cohort intelligence is proposed as an optimization technique and shown to find better solutions than genetic algorithm, simulated annealing, particle swarm optimization and other methods for the problems formulated. Tool-based micro-machining processes like micro-milling are also discussed for miniaturized manufacturing.
Moldex3D for Effective Design Validation, Optimization of Plastic Parts and M...Altair
1) The document discusses how Moldex3D injection molding simulation software can be integrated with HyperStudy for design of experiments (DOE) analysis and OptiStruct/RADIOSS for structural analysis.
2) A case study demonstrates using DOE in HyperStudy to optimize the injection molding process conditions in Moldex3D to minimize part warpage, then exporting the results to OptiStruct/RADIOSS for topology optimization and structural analysis of the fiber-reinforced plastic part.
3) The integration allows determining optimal molding conditions to reduce part deformation while ensuring structural integrity of the optimized design under loading.
OMR spftware offers the advantages of speed, accuracy,flexibility&economy with much greater ease of use as compared to other conventional OMR solutions.For more information or to get a Quote visit http://omrsheetsoftware.com/
Designing, Fabricating, and Controlling of Shaped Metal Deposition System in ...Hassan Alwaely
This document summarizes Hassan Jasib Khudhair's master's thesis on designing, fabricating, and controlling a shaped metal deposition system for additive manufacturing. The research aims to develop a computer-aided double wire deposition machine controlled by a robotic arm. Experimental results show that process parameters like current, travel speed, and wire feed ratios influence bead geometry, hardness, and residual stress of deposited stainless steel parts. Finite element analysis of the system also shows that the design parameters allow for safe operation within specified stress limits. Overall, the study evaluates a new technique for additive manufacturing of metal parts using a cold wire feed method.
Breuckmann eMobility GmbH develops innovative rotor casting technology called Zero Porosity Rotor (ZPR) for electric vehicle induction motors. ZPR uses laminar squeeze casting to produce rotors with zero porosity, allowing for superior mechanical properties, higher electrical conductivity, and maximum process stability compared to industry standard rotors. Key advantages of ZPR rotors include up to 12.5% higher maximum rotational speed, 35% higher electrical conductivity, and ability to withstand 25% higher circumferential bursting speeds. Breuckmann has partnerships for motor testing, slot geometry design, and received EU funding to develop high-speed motor concepts using its ZPR technology.
Design and Analysis of fluid flow in AISI 1008 Steel reduction gear boxIRJET Journal
This document summarizes a research paper that analyzes fluid flow in an AISI 1008 steel reduction gearbox using computer simulation. The researchers redesigned the gearbox model in CATIA and analyzed it using casting simulation software to optimize the design and minimize defects from shrinkage, hotspots, and solidification time. They simulated the original design and a modified design with changes to the riser and gating system dimensions. The simulations aimed to improve yield by reducing porosity and defects in the casting.
The document summarizes the design and fabrication of a 3-axis CNC precision router. The objectives were to efficiently design and fabricate a router with micron-level precision at an economical cost for small industries in Pakistan. Various analyses including mathematical modeling, FEMA, static and dynamic analyses were performed to optimize the design. A 16mm ball screw diameter was justified. The router was fabricated using A36 steel with bolts, nuts, and pins. NEMA 23 motors, drivers, and infrared sensors were integrated along with Raspberry Pi and C# software. The router can accommodate multiple 3D printing heads and has future potential for milling and improved precision.
Shaped Metal deposition Based on Additive ManufacturingHassan Alwaely
A three-axis system was designed and manufactured to facilitate SMD operations. Initially, a feasible design of the proposed CADWD machine had been prepared. The design had been carried out according to the valid standards. The CADWDM is actuated with three stepper motors, which connected along with x-, y-, and z-directions. The maximum working area is (450 x 750 x 200) mm3. Machine design carried out using Auto CAD program and then it was simulated through ANSYS workbench program.
The document discusses optimizing turning process parameters on a brass workpiece using a 3D printed single point cutting tool. It describes designing and 3D printing a maraging steel tool using solid works, and experimenting with different cutting speeds, feeds, and depths of cut. Response surface methodology and ANOVA analysis were used to optimize the tool parameters and achieve the maximum material removal rate and minimum machining time.
3D printing has been a great technology in this century of amazing technology. Here is a presentation of a Arduino based 3D Printer which is very cheap to design, so that every one can afford and build this by itself.
Keywords: six sigma; foundry SMEs; small and medium-sized enterprises; design of experiments; DOE; measurement system analysis; MSA; failure mode and effects analysis; FMEA; non-conforming products; cost of poor quality; hypothesis testing; defects per million opportunities; DPMO; process capability; DMAICS; analysis of variance; ANOVA; India; make-to-order foundries; scrap reduction; productivity.
This document summarizes the development of a robust SMT process for placing 03015 components, which are only 0.3mm x 0.15mm in size. Through testing different solder pastes and stencil materials, the author developed a process using a laser-cut fine grain stainless steel stencil with an electro polish and nano coating that achieved over 80% transfer efficiency. Taguchi experiments were used to optimize print parameters. Initial tests achieved placement of 03015 components with 0 defects out of 36,000 placements. The printing process achieved a DPMO of 15. Further work is still needed to optimize the process for thinner stencils required by smartphones.
The document summarizes a project to improve the Cp and Cpk of roll crowning through reducing variation in roll profiles. It outlines the current process performance including high standard deviation and sigma rating of 1.11-2.76. Modifications were made to the data collection process and a measurement system study was conducted to analyze gauge repeatability and reproducibility. A cause and effect study identified a relationship between roll profile variation and moisture content deviation in the paper. The goal is to improve the sigma rating from the current 2.25 to 2.65 through applying DMAIC methodology to identify and implement solutions.
The document describes a new building energy simulation solver called NANDRAD. It was developed to overcome barriers in simulating large, complex buildings. NANDRAD can model buildings with over 1,000 zones, detailed transient wall calculations, and flexible HVAC systems. It uses an optimized numerical approach and data structure to solve large, sparse systems faster than traditional solvers. Validation tests showed NANDRAD results within 0.5°C of standards for temperature and energy use. The new solver provides an accurate and high-performance tool for building performance simulation.
minimum porosity formation in pressure die casting by taguchi methodNIT MANIPUR
This document discusses using the Taguchi method to optimize process parameters in pressure die casting of aluminum alloy ADC10 to minimize shrinkage porosity. Experiments were conducted varying temperature, velocities, and pressure using an L27 orthogonal array. Software simulations were also performed and compared to experimental results. The optimal parameters found were a furnace temperature of 700°C, die temperature of 260°C, first stage velocity of 0.35 m/s, second stage velocity of 1.5 m/s, and third stage pressure of 280 bar, resulting in the minimum predicted shrinkage porosity of 1.6725%.
This document discusses Group Technology (GT) and Computer Integrated Manufacturing Systems (CIMS). It describes GT as a philosophy that recognizes and exploits similarities in activities, tasks, and problem solving. Parts are classified based on design and manufacturing attributes. Classification approaches include visual inspection and coding methods like monocode, polycode, and mixed codes. Benefits of GT include improvements to engineering design, layout planning, process planning, production control, quality control, purchasing, and customer service.
Sand casting and die casting were identified as potential processes for manufacturing a connector rod. Die casting has higher tooling and capital costs but can produce parts at a faster rate. For small batch sizes, the cost per part is dominated by fixed capital and tooling costs, making sand casting cheaper. However, as batch size increases, die casting becomes more economical due to its higher production rate reducing the impact of fixed costs per part. An analysis is needed to determine the optimal process based on the specific production volumes required.
Experiences in ELK with D3.js for Large Log Analysis and VisualizationSurasak Sanguanpong
This document discusses experiences using the ELK stack (Elasticsearch, Logstash, Kibana) and D3.js for large log analysis and visualization. It begins with an overview of network traffic logging at Kasetsart University, which generates over 30 terabytes of log data per day. It then demonstrates setting up an ELK testbed to index these logs in real-time for fast search and exploration in Kibana. Finally, it shows how D3.js can be used to create dynamic, real-time visualizations of the logged data.
1404 app dev series - session 8 - monitoring & performance tuningMongoDB
This document discusses MongoDB monitoring tools and key metrics. It provides an overview of tools like mongostat, the MongoDB shell, MMS, and mtools for monitoring operations per second, memory usage, page faults, and other metrics. It also discusses using logs to analyze query performance and disk saturation. The importance of monitoring queued readers/writers, page faults, background flush processes, memory usage, locks, and other core metrics is highlighted.
How GenAI will (not) change your business?Marlon Dumas
Not all new technology waves are the same. Some waves are vertical (3D printing, digital twins, blockchain) while others are horizontal (the PC in the 80s, the Web in the 90s). GenAI is a horizontal wave. The question is not if GenAI will impact my business, but what will be the scope of this impact. In this talk, we will go through a journey of collisions: GenAI colliding with customer service, clerical work, information search, content production, IT development, product design, and other knowledge work. A common thread to understand the impact of GenAI is to distinguish between descriptive use cases (search, summarize, expand, transcribe & translate) versus creative use.
Walking the Way from Process Mining to AI-Driven Process OptimizationMarlon Dumas
While generative AI grabs headlines, most organizations are yet to achieve continuous process improvement from predictive and prescriptive analytics.
Why? It’s largely about data, people, and a methodical approach to deploy AI to connect data and people. The good news is that if your organization has built a process mining capability, you are well placed to climb the ladder to achieve AI-driven process optimization. But to get there, you need a disciplined step-by-step approach along two tracks: a tactical management track and an operational management track.
First, it’s about predicting what will happen if you leave your process as-is, and what will happen if you implement a change in your process. At a tactical level, a predictive capability allows you to prioritize improvement opportunities. At an operational level, it allows you to predict issues, such as deadline violations. The challenges here are how to manage the inherent uncertainty of data-driven AI systems, and how to change your people and culture to manage processes proactively, rather than reactively. One thing is to deploy predictive dashboards, another entirely different thing is to get people to use them effectively to improve the processes.
Next, it’s about becoming preemptive: continuously optimizing your processes by leveraging streams of data-driven recommendations to trigger changes and actions. At the tactical level, this prescriptive capability allows you to implement the right changes to maximize competing KPIs. At the operational level, it means triggering interventions in your processes to “wow” customers and to meet SLAs in a cost-effective manner. The challenge here is how to help process owners, workers, and other stakeholders to understand the causes of performance issues and how the recommendations generated by the AI-driven optimization system will tackle those causes?
And finally, as an icing on the cake, generative AI allows you to produce improvement scenarios to adapt to external changes. Importantly, the transformative potential of generative AI in the context of process improvement does not come from its ability to provide question-and-answer interfaces to query data. It comes from its ability to support continuous process adaptation by generating and validating hypotheses based on a holistic view of your organization.
In this talk, we will discuss how organizations are driving sustainable business value by strategically layering predictive, prescriptive, and generative AI onto a process mining foundation, one brick at a time.
Industry keynote talk by Marlon Dumas at the 5th International Conference on Process Mining (ICPM'2023), Rome, Italy, 25 October 2023
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Moldex3D for Effective Design Validation, Optimization of Plastic Parts and M...Altair
1) The document discusses how Moldex3D injection molding simulation software can be integrated with HyperStudy for design of experiments (DOE) analysis and OptiStruct/RADIOSS for structural analysis.
2) A case study demonstrates using DOE in HyperStudy to optimize the injection molding process conditions in Moldex3D to minimize part warpage, then exporting the results to OptiStruct/RADIOSS for topology optimization and structural analysis of the fiber-reinforced plastic part.
3) The integration allows determining optimal molding conditions to reduce part deformation while ensuring structural integrity of the optimized design under loading.
OMR spftware offers the advantages of speed, accuracy,flexibility&economy with much greater ease of use as compared to other conventional OMR solutions.For more information or to get a Quote visit http://omrsheetsoftware.com/
Designing, Fabricating, and Controlling of Shaped Metal Deposition System in ...Hassan Alwaely
This document summarizes Hassan Jasib Khudhair's master's thesis on designing, fabricating, and controlling a shaped metal deposition system for additive manufacturing. The research aims to develop a computer-aided double wire deposition machine controlled by a robotic arm. Experimental results show that process parameters like current, travel speed, and wire feed ratios influence bead geometry, hardness, and residual stress of deposited stainless steel parts. Finite element analysis of the system also shows that the design parameters allow for safe operation within specified stress limits. Overall, the study evaluates a new technique for additive manufacturing of metal parts using a cold wire feed method.
Breuckmann eMobility GmbH develops innovative rotor casting technology called Zero Porosity Rotor (ZPR) for electric vehicle induction motors. ZPR uses laminar squeeze casting to produce rotors with zero porosity, allowing for superior mechanical properties, higher electrical conductivity, and maximum process stability compared to industry standard rotors. Key advantages of ZPR rotors include up to 12.5% higher maximum rotational speed, 35% higher electrical conductivity, and ability to withstand 25% higher circumferential bursting speeds. Breuckmann has partnerships for motor testing, slot geometry design, and received EU funding to develop high-speed motor concepts using its ZPR technology.
Design and Analysis of fluid flow in AISI 1008 Steel reduction gear boxIRJET Journal
This document summarizes a research paper that analyzes fluid flow in an AISI 1008 steel reduction gearbox using computer simulation. The researchers redesigned the gearbox model in CATIA and analyzed it using casting simulation software to optimize the design and minimize defects from shrinkage, hotspots, and solidification time. They simulated the original design and a modified design with changes to the riser and gating system dimensions. The simulations aimed to improve yield by reducing porosity and defects in the casting.
The document summarizes the design and fabrication of a 3-axis CNC precision router. The objectives were to efficiently design and fabricate a router with micron-level precision at an economical cost for small industries in Pakistan. Various analyses including mathematical modeling, FEMA, static and dynamic analyses were performed to optimize the design. A 16mm ball screw diameter was justified. The router was fabricated using A36 steel with bolts, nuts, and pins. NEMA 23 motors, drivers, and infrared sensors were integrated along with Raspberry Pi and C# software. The router can accommodate multiple 3D printing heads and has future potential for milling and improved precision.
Shaped Metal deposition Based on Additive ManufacturingHassan Alwaely
A three-axis system was designed and manufactured to facilitate SMD operations. Initially, a feasible design of the proposed CADWD machine had been prepared. The design had been carried out according to the valid standards. The CADWDM is actuated with three stepper motors, which connected along with x-, y-, and z-directions. The maximum working area is (450 x 750 x 200) mm3. Machine design carried out using Auto CAD program and then it was simulated through ANSYS workbench program.
The document discusses optimizing turning process parameters on a brass workpiece using a 3D printed single point cutting tool. It describes designing and 3D printing a maraging steel tool using solid works, and experimenting with different cutting speeds, feeds, and depths of cut. Response surface methodology and ANOVA analysis were used to optimize the tool parameters and achieve the maximum material removal rate and minimum machining time.
3D printing has been a great technology in this century of amazing technology. Here is a presentation of a Arduino based 3D Printer which is very cheap to design, so that every one can afford and build this by itself.
Keywords: six sigma; foundry SMEs; small and medium-sized enterprises; design of experiments; DOE; measurement system analysis; MSA; failure mode and effects analysis; FMEA; non-conforming products; cost of poor quality; hypothesis testing; defects per million opportunities; DPMO; process capability; DMAICS; analysis of variance; ANOVA; India; make-to-order foundries; scrap reduction; productivity.
This document summarizes the development of a robust SMT process for placing 03015 components, which are only 0.3mm x 0.15mm in size. Through testing different solder pastes and stencil materials, the author developed a process using a laser-cut fine grain stainless steel stencil with an electro polish and nano coating that achieved over 80% transfer efficiency. Taguchi experiments were used to optimize print parameters. Initial tests achieved placement of 03015 components with 0 defects out of 36,000 placements. The printing process achieved a DPMO of 15. Further work is still needed to optimize the process for thinner stencils required by smartphones.
The document summarizes a project to improve the Cp and Cpk of roll crowning through reducing variation in roll profiles. It outlines the current process performance including high standard deviation and sigma rating of 1.11-2.76. Modifications were made to the data collection process and a measurement system study was conducted to analyze gauge repeatability and reproducibility. A cause and effect study identified a relationship between roll profile variation and moisture content deviation in the paper. The goal is to improve the sigma rating from the current 2.25 to 2.65 through applying DMAIC methodology to identify and implement solutions.
The document describes a new building energy simulation solver called NANDRAD. It was developed to overcome barriers in simulating large, complex buildings. NANDRAD can model buildings with over 1,000 zones, detailed transient wall calculations, and flexible HVAC systems. It uses an optimized numerical approach and data structure to solve large, sparse systems faster than traditional solvers. Validation tests showed NANDRAD results within 0.5°C of standards for temperature and energy use. The new solver provides an accurate and high-performance tool for building performance simulation.
minimum porosity formation in pressure die casting by taguchi methodNIT MANIPUR
This document discusses using the Taguchi method to optimize process parameters in pressure die casting of aluminum alloy ADC10 to minimize shrinkage porosity. Experiments were conducted varying temperature, velocities, and pressure using an L27 orthogonal array. Software simulations were also performed and compared to experimental results. The optimal parameters found were a furnace temperature of 700°C, die temperature of 260°C, first stage velocity of 0.35 m/s, second stage velocity of 1.5 m/s, and third stage pressure of 280 bar, resulting in the minimum predicted shrinkage porosity of 1.6725%.
This document discusses Group Technology (GT) and Computer Integrated Manufacturing Systems (CIMS). It describes GT as a philosophy that recognizes and exploits similarities in activities, tasks, and problem solving. Parts are classified based on design and manufacturing attributes. Classification approaches include visual inspection and coding methods like monocode, polycode, and mixed codes. Benefits of GT include improvements to engineering design, layout planning, process planning, production control, quality control, purchasing, and customer service.
Sand casting and die casting were identified as potential processes for manufacturing a connector rod. Die casting has higher tooling and capital costs but can produce parts at a faster rate. For small batch sizes, the cost per part is dominated by fixed capital and tooling costs, making sand casting cheaper. However, as batch size increases, die casting becomes more economical due to its higher production rate reducing the impact of fixed costs per part. An analysis is needed to determine the optimal process based on the specific production volumes required.
Experiences in ELK with D3.js for Large Log Analysis and VisualizationSurasak Sanguanpong
This document discusses experiences using the ELK stack (Elasticsearch, Logstash, Kibana) and D3.js for large log analysis and visualization. It begins with an overview of network traffic logging at Kasetsart University, which generates over 30 terabytes of log data per day. It then demonstrates setting up an ELK testbed to index these logs in real-time for fast search and exploration in Kibana. Finally, it shows how D3.js can be used to create dynamic, real-time visualizations of the logged data.
1404 app dev series - session 8 - monitoring & performance tuningMongoDB
This document discusses MongoDB monitoring tools and key metrics. It provides an overview of tools like mongostat, the MongoDB shell, MMS, and mtools for monitoring operations per second, memory usage, page faults, and other metrics. It also discusses using logs to analyze query performance and disk saturation. The importance of monitoring queued readers/writers, page faults, background flush processes, memory usage, locks, and other core metrics is highlighted.
Similar to Slice, Mine, Dice: Complexity-Aware Automated Discovery of Business Process Models (20)
How GenAI will (not) change your business?Marlon Dumas
Not all new technology waves are the same. Some waves are vertical (3D printing, digital twins, blockchain) while others are horizontal (the PC in the 80s, the Web in the 90s). GenAI is a horizontal wave. The question is not if GenAI will impact my business, but what will be the scope of this impact. In this talk, we will go through a journey of collisions: GenAI colliding with customer service, clerical work, information search, content production, IT development, product design, and other knowledge work. A common thread to understand the impact of GenAI is to distinguish between descriptive use cases (search, summarize, expand, transcribe & translate) versus creative use.
Walking the Way from Process Mining to AI-Driven Process OptimizationMarlon Dumas
While generative AI grabs headlines, most organizations are yet to achieve continuous process improvement from predictive and prescriptive analytics.
Why? It’s largely about data, people, and a methodical approach to deploy AI to connect data and people. The good news is that if your organization has built a process mining capability, you are well placed to climb the ladder to achieve AI-driven process optimization. But to get there, you need a disciplined step-by-step approach along two tracks: a tactical management track and an operational management track.
First, it’s about predicting what will happen if you leave your process as-is, and what will happen if you implement a change in your process. At a tactical level, a predictive capability allows you to prioritize improvement opportunities. At an operational level, it allows you to predict issues, such as deadline violations. The challenges here are how to manage the inherent uncertainty of data-driven AI systems, and how to change your people and culture to manage processes proactively, rather than reactively. One thing is to deploy predictive dashboards, another entirely different thing is to get people to use them effectively to improve the processes.
Next, it’s about becoming preemptive: continuously optimizing your processes by leveraging streams of data-driven recommendations to trigger changes and actions. At the tactical level, this prescriptive capability allows you to implement the right changes to maximize competing KPIs. At the operational level, it means triggering interventions in your processes to “wow” customers and to meet SLAs in a cost-effective manner. The challenge here is how to help process owners, workers, and other stakeholders to understand the causes of performance issues and how the recommendations generated by the AI-driven optimization system will tackle those causes?
And finally, as an icing on the cake, generative AI allows you to produce improvement scenarios to adapt to external changes. Importantly, the transformative potential of generative AI in the context of process improvement does not come from its ability to provide question-and-answer interfaces to query data. It comes from its ability to support continuous process adaptation by generating and validating hypotheses based on a holistic view of your organization.
In this talk, we will discuss how organizations are driving sustainable business value by strategically layering predictive, prescriptive, and generative AI onto a process mining foundation, one brick at a time.
Industry keynote talk by Marlon Dumas at the 5th International Conference on Process Mining (ICPM'2023), Rome, Italy, 25 October 2023
Discovery and Simulation of Business Processes with Probabilistic Resource Av...Marlon Dumas
In the field of business process simulation, the availability of resources is captured by assigning a calendar to each resource, e.g., Monday-Friday 9:00-18:00. Resources are assumed to be always available to perform activities during their calendar. This assumption often does not hold due to interruptions, breaks, or because resources time-share across multiple processes. A simulation model that captures availability via crisp time slots (a resource is either on or off during a slot) does not capture these behaviors, leading to inaccuracies in the simulation output. This paper presents a simulation approach wherein resource availability is modeled probabilistically. In this approach, each availability time slot is associated with a probability, allowing us to capture, for example, that a resource is available on Fridays between 14:00-15:00 with 90% probability and between 17:00-18:00 with 50% probability. The paper proposes an algorithm to discover probabilistic availability calendars from event logs. An empirical evaluation shows that simulation models with probabilistic calendars discovered from event logs, replicate the temporal distribution of activity instances and cycle times of a process more closely than simulation models with crisp calendars.
This presentation was delivered at the 5th International Conference on Process Mining (ICPM'2023), Rome, Italy, October 2023.
The paper is available at: https://easychair.org/publications/preprint/Rz9g
Can I Trust My Simulation Model? Measuring the Quality of Business Process Si...Marlon Dumas
Business Process Simulation (BPS) is an approach to analyze the performance of business processes under different scenarios. For example, BPS allows us to estimate what would be the cycle time of a process if one or more resources became unavailable. The starting point of BPS is a process model annotated with simulation parameters (a BPS model). BPS models may be manually designed, based on information collected from stakeholders and empirical observations, or automatically discovered from execution data. Regardless of its origin, a key question when using a BPS model is how to assess its quality. In this paper, we propose a collection of measures to evaluate the quality of a BPS model w.r.t. its ability to replicate the observed behavior of the process. We advocate an approach whereby different measures tackle different process perspectives. We evaluate the ability of the proposed measures to discern the impact of modifications to a BPS model, and their ability to uncover the relative strengths and weaknesses of two approaches for automated discovery of BPS models. The evaluation shows that the measures not only capture how close a BPS model is to the observed behavior, but they also help us to identify sources of discrepancies.
Presentation delivered by David Chapela-Campa at the BPM'2023 conference, Utrecht, September 2023.
Business Process Optimization: Status and PerspectivesMarlon Dumas
For decades, business process optimization has been largely about art and craft (and sometimes wizardry). Apart from narrowly scoped approaches to optimize resource allocation (often assuming that workers behave like robots), a lot of business process optimization relies on high-level guidelines, with A/B testing for idea validation, which is hard to scale to complex processes. As a result, managers end up settling for a "good enough" process. Can we do more? In this talk, we review recent work on the use of high-fidelity simulation models discovered from execution data. The talk also explores the possibilities (and perils) that LLMs bring to the field of business process optimization.
This talk was delivered at the Workshop on Data-Driven Business Process Optimization at the BPM'2023 conference.
Learning When to Treat Business Processes: Prescriptive Process Monitoring wi...Marlon Dumas
Paper presentation at the 35th International Conference on Advanced Information Systems Engineering (CAiSE'2023).
Abstract.
Increasing the success rate of a process, i.e. the percentage of cases that end in a positive outcome, is a recurrent process improvement goal. At runtime, there are often certain actions (a.k.a. treatments) that workers may execute to lift the probability that a case ends in a positive outcome. For example, in a loan origination process, a possible treatment is to issue multiple loan offers to increase the probability that the customer takes a loan. Each treatment has a cost. Thus, when defining policies for prescribing treatments to cases, managers need to consider the net gain of the treatments. Also, the effect of a treatment varies over time: treating a case earlier may be more effective than later in a case. This paper presents a prescriptive monitoring method that automates this decision-making task. The method combines causal inference and reinforcement learning to learn treatment policies that maximize the net gain. The method leverages a conformal prediction technique to speed up the convergence of the reinforcement learning mechanism by separating cases that are likely to end up in a positive or negative outcome, from uncertain cases. An evaluation on two real-life datasets shows that the proposed method outperforms a state-of-the-art baseline.
Why am I Waiting Data-Driven Analysis of Waiting Times in Business ProcessesMarlon Dumas
Presentation of a research paper at the 35th International Conference on Advanced Information Systems Engineering (CAiSE) in Zaragoza Spain. The paper presents a classification of causes of waiting times in business processes and a method to automatically detect and quantify the presence of each of these causes in a business process recorded in an event log.
This talk introduces the concept of Augmented Business Process Management System: An ABPMS is a process-aware information system that relies on trustworthy AI technology to
reason and act upon data, within a set of restrictions, with the aim to continuously adapt and
improve a set of business processes with respect to one or more key performance indicators.
The talk describes the transition from existing process mining technology to AI-Augmented BPM as a pyramid, where predictive, prescriptive, conversational and reasoning capabilities are stacked up incrementally to reach the level of Augmented BPM.
Talk delivered at the AAAI'2023 Workshop on AI for Business Process Management.
Process Mining and Data-Driven Process SimulationMarlon Dumas
Guest lecture delivered at the - Institut Teknologi Sepuluh on 8 December 2022.
This lecture gives an overview of process mining and simulation techniques, and how the two can be used together in process improvement projects.
Modeling Extraneous Activity Delays in Business Process SimulationMarlon Dumas
This paper presents a technique to enhance the fidelity of business process simulation models by detecting unexplained (extraneous) delays from business process execution data, and modeling these delays in the simulation model, via timer events.
The presentation was delivered at the 4th International Conference on Process Mining (ICPM'2022).
Paper available at: https://arxiv.org/abs/2206.14051
Business Process Simulation with Differentiated Resources: Does it Make a Dif...Marlon Dumas
Existing methods for discovering business process simulation models from execution data (event logs) assume that all resources in a pool have the same performance and share the same availability calendars. This paper proposes a method for discovering simulation models, wherein each resource is treated as an individual entity, with its own performance and availability calendar. An evaluation shows that simulation models with differentiated resources more closely replicate the distributions of cycle times and the work rhythm in a process than models with undifferentiated resources. The paper is available at: https://link.springer.com/chapter/10.1007/978-3-031-16103-2_24
Prescriptive Process Monitoring Under Uncertainty and Resource ConstraintsMarlon Dumas
This paper presents an approach to trigger runtime interventions at runtime, in order to improve the success rate of a process, when the number of resources who can perform these interventions is limited.
The paper is available at: https://link.springer.com/chapter/10.1007/978-3-031-16171-1_13
The presentation delivered at the 20th International Conference on Business Process Management (BPM'2022), in Muenster, Germany, September 2022.
Slides of a lecture delivered at the First Process Mining Summer School in Aachen, Germany, July 2022.
This lecture introduces techniques in the area of "task mining" with an emphasis on Robotic Process Mining. Robotic Process Mining (RPM) is a family of techniques to discover repetitive routines that can be automated using Robotic Process Automation (RPA) technology, by analyzing interactions between
one or more workers and one or more software applications, during the performance of one or more tasks in a business process. In general, RPM techniques take as input logs of User Interactions (UI logs). These UI logs are recorded while workers interact with one or more applications, typically desktop applications. Based on these logs, RPM techniques produce specifications of one or more routines that can be automated using RPA or related tools.
Accurate and Reliable What-If Analysis of Business Processes: Is it Achievable?Marlon Dumas
This document discusses using event logs to generate business process simulation models. It describes traditional discrete event simulation approaches that discover simulation models from event logs recorded by information systems. Deep learning techniques are also discussed that can generate traces without an explicit process model. The document suggests that combining discrete event simulation and deep learning may produce more accurate simulations, but challenges remain around validating such hybrid approaches and testing them in previously unseen scenarios. More research is needed before these data-driven simulation methods can reliably predict the effects of interventions.
Process Mining: A Guide for PractitionersMarlon Dumas
This document presents a guide for practitioners on process mining. It introduces process mining and discusses its main use cases. These use cases are categorized into discovery oriented, future and change oriented, alignment oriented, variant oriented, and performance oriented. The document also provides a framework to classify use cases and discusses the business-oriented questions that can be answered using different process mining use cases, such as improving transparency, quality, agility, efficiency and conformance.
Process Mining for Process Improvement.pptxMarlon Dumas
Presentation of a research paper at the 16th International Conference on Research Challenges in Information Science (RCIS). The paper presents the results of an empirical study on how practitioners use process mining to identify business process improvement opportunities. The paper is available at: https://link.springer.com/chapter/10.1007/978-3-031-05760-1_13
Data-Driven Analysis of Batch Processing Inefficiencies in Business ProcessesMarlon Dumas
Slides of a research paper presentation at the 16th International Conference on Research Challenges in Information Science (RCIS).
The research paper presents an approach to analyze event logs of business processes in order to identify batched activities and to analyze the waiting times caused by these activities.
Paper available at: https://link.springer.com/chapter/10.1007/978-3-031-05760-1_14
Optimización de procesos basada en datosMarlon Dumas
Ponencia en BPM Day Lima 2021.
En esta charla, hablaremos de métodos y aplicaciones emergentes en el ámbito de la optimización de procesos basada en datos. Hablaremos de avances en el área de la minería de procesos, de métodos de construcción de gemelos digitales de procesos y de métodos de monitoreo predictivo. Mostraremos por medio de ejemplos y casos de estudio, cómo estos métodos permiten guiar las iniciativas de transformación digital y de mejora continua de procesos, En particular, ilustraremos el uso de estos métodos para: (1) analizar el rendimiento de los procesos de negocio de manera a identificar fricciones y oportunidades de automatización; (2) predecir el impacto de cambios, y en particular, predecir el impacto de una iniciativa de automatización; (3) realizar predicciones sobre el rendimiento del proceso y ajustar la ejecución del proceso de manera a prevenir incumplimientos del SLA, quejas de clientes, y otros eventos indeseables.
Process Mining and AI for Continuous Process ImprovementMarlon Dumas
Talk delivered at BPM Day Rio Grande do Sul on 11 November 2021.
Abstract.
Process mining is a technology that marries methods from business process management and from data science, to support operational excellence and digital transformation. Process mining tools can transform data extracted from enterprise systems, into visualizations and reports that allow managers to improve organizational performance along different dimensions, such as efficiency, quality, and compliance. In this talk, we will give an overview of the capabilities of process mining tools, and we will illustrate the benefits of process mining via several case studies in the fields of insurance, manufacturing, and IT service management.
Prescriptive Process Monitoring for Cost-Aware Cycle Time ReductionMarlon Dumas
Paper presentation at the 3rd International Conference on Process Mining (ICPM), 4 November 2021.
The paper is available at: https://arxiv.org/abs/2105.07111
A workshop hosted by the South African Journal of Science aimed at postgraduate students and early career researchers with little or no experience in writing and publishing journal articles.
The simplified electron and muon model, Oscillating Spacetime: The Foundation...RitikBhardwaj56
Discover the Simplified Electron and Muon Model: A New Wave-Based Approach to Understanding Particles delves into a groundbreaking theory that presents electrons and muons as rotating soliton waves within oscillating spacetime. Geared towards students, researchers, and science buffs, this book breaks down complex ideas into simple explanations. It covers topics such as electron waves, temporal dynamics, and the implications of this model on particle physics. With clear illustrations and easy-to-follow explanations, readers will gain a new outlook on the universe's fundamental nature.
This slide is special for master students (MIBS & MIFB) in UUM. Also useful for readers who are interested in the topic of contemporary Islamic banking.
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Walmart Business+ and Spark Good for Nonprofits.pdfTechSoup
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Answers about how you can do more with Walmart!"
ISO/IEC 27001, ISO/IEC 42001, and GDPR: Best Practices for Implementation and...PECB
Denis is a dynamic and results-driven Chief Information Officer (CIO) with a distinguished career spanning information systems analysis and technical project management. With a proven track record of spearheading the design and delivery of cutting-edge Information Management solutions, he has consistently elevated business operations, streamlined reporting functions, and maximized process efficiency.
Certified as an ISO/IEC 27001: Information Security Management Systems (ISMS) Lead Implementer, Data Protection Officer, and Cyber Risks Analyst, Denis brings a heightened focus on data security, privacy, and cyber resilience to every endeavor.
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Throughout his career, he has taken on multifaceted roles, from leading technical project management teams to owning solutions that drive operational excellence. His conscientious and proactive approach is unwavering, whether he is working independently or collaboratively within a team. His ability to connect with colleagues on a personal level underscores his commitment to fostering a harmonious and productive workplace environment.
Date: May 29, 2024
Tags: Information Security, ISO/IEC 27001, ISO/IEC 42001, Artificial Intelligence, GDPR
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3. a b a b c d e c a f g h
a b a b k d e c h f g h
b c p q p r a k q r s
b c p h p r a k q r s
a x p h y z t t u
Trace
clustering
a b a b c d e c a f g h
a b a b k d e c h f g h
b c p q p r a k q r s
b c p h p r a k q r s
a x p h y z t t u
Cluster 1
Cluster 2
Noise
Event log
Process variant 1
Process variant 2
Trace clustering
3
8. F10
F11 F13
F14F12
M2 RPST of M2
F20
F21 F22
F24F23
F25
RPST of M3
Refined Process Structure Tree (RPST)
J. Vanhatalo, H. Volzer, J. Koehler: The Refined Process Structure Tree. Data Knowl. Eng., 2009
M3
8
9. M2
M3
F14 F25
M. Dumas, L. García-Bañuelos, M. La Rosa, and R. Uba. Fast Detection of Exact Clones in Business Process Model
Repositories. Information Systems, 2013
RPSDAG
F10
F11 F13
F14F12
RPST of M2
F20
F21 F22
F24F23
F25
RPST of M3
9
11. F12
F22M3
+
S3
+
S3
?
?
Extracting approximate clones
C. C. Ekanayake, M. Dumas, L. García-Bañuelos, M. La Rosa, and A. H. M. ter Hofstede. Approximate Clone
Detection in Repositories of Business Process Models, BPM 2012
Appr. clones:
• SESE
• Non-trivial
• Similar
• Unrelated
11
+
+
M2
12. Merging
algorithm
Fragment F12 of model M2
Fragment F22 of model M3
Configurable
gateway
Configurable
label
M. La Rosa, M. Dumas, R. Uba, and R. M. Dijkman. Business Process Model Merging: An Approach to Business
Process Consolidation. ACM TOSEM, 2013.
Merging approximate clones
S4
12
14. Trace clustering
• M. Song, C.W. Gunther, and W.M.P. van der Aalst, Improving Process Mining
with Trace Clustering, J. Korean Inst. of Industrial Engineers 34(4), 2008
• R.P.J.C. Bose, W.M.P. van der Aalst, Trace Clustering Based on Conserved
Patterns: Towards Achieving Better Process Models, BPM 2009 Workshops
• A.K.A. de Medeiros, A. Guzzo, G. Greco, W.M.P. van der Aalst, A.J.M.M.
Weijters, B.F. van Dongen, D. Saccà. Process Mining Based on Clustering: A
Quest for Precision, BPM Workshops 2007
Discovery
• A.J.M.M. Weijters, J.T.S. Ribeiro. Flexible Heuristics Miner (FHM), CIDM,
2011.
Evaluation setup
Log Traces Events
Event
classes
Duplication
ratio
Motor 4,293 33,202 292 114
Commercial 4,852 54,134 81 668
BPI 2012 5,312 91,949 36 2,554
14
15. Evaluation – repository size and models number
S: Song et al.
B: Bose et al.
M: Medeiros et al.
• up to 64% reduction in repository size
• up to 66% reduction in # of top level process models
• up to 120 sub-processes extracted
Motor Comm BPI Motor Comm BPI
14%
22%
66%
15
64%
16. Evaluation – individual model complexity
Log Method
Size
CFC ACD Density CNC
Avg Min Max Savings (%)
Motor
S 22.75 4 37
22.8
12.07 2.71 0.07 1.26
S + SMD 17.57 4 37 10.07 2.34 0.11 1.21
B 20.01 4 37
9.8
9.97 2.51 0.08 1.2
B + SMD 18.04 4 37 10.05 2.38 0.11 1.2
M 15.73 3 49
-1.1
7.36 2.14 0.11 1.12
M + SMD 15.9 4 49 8.34 2.12 0.12 1.14
Commercial
S 24.07 6 34
22.4
13.65 2.96 0.06 1.32
S + SMD 18.67 2 34 11.34 2.49 0.1 1.24
B 21.11 2 34
20.3
11.04 2.65 0.07 1.23
B+ SMD 16.82 2 34 9.73 2.29 0.12 1.18
M 18.86 2 40
11.1
10.18 2.47 0.09 1.22
M + SMD 16.76 2 34 9.71 2.38 0.11 1.21
BPI
S 47.32 15 56
29.7
20.77 2.34 0.03 1.24
S + SMD 33.27 4 56 20.18 2.41 0.07 1.28
B 46.54 13 56
30.6
20.48 2.35 0.03 1.23
B + SMD 32.3 4 56 19.29 2.33 0.07 1.27
M 46.48 21 61
18.9
21.16 2.34 0.03 1.24
M + SMD 37.71 7 56 25.29 2.38 0.04 1.3
16
17. + Seeks to discover process models that meet user-specified
complexity thresholds
+ Reduces repository size and top level models number
compared to trace clustering techniques
+ Preserves fitness, appropriateness & generalization of
models discovered from trace clusters
+ Little impact on structural complexity of process models
- Performance overhead
The SMD technique
17
18. Optimizations
• Parallelization of divisive trace clustering, discovery and
GED computation
• Incremental divisive trace clustering
• Sub-polygons and sub-bonds extraction
Complexity thresholds tuning
In the future…
18