Browse the full archives below The Margin Matrix: If you knew you were going to face that bet times and you made it every time, you would come pretty close to doubling your money per the law of large numbers. A few interesting points worth highlighting: Quantitative vs Qualitative Value of Outcomes The player in this poker game making the correct decision is going to be wrong the majority of the time. However, by outcome, he will double his money. Assuming the player was correct every time, If we were to redraw the matrix and weight the quadrants according to quantitative vs qualitative, it would look like this: Qualitative Value of Outcomes -Matrix redrawn so each square is sized as a percent of net winnings. Quantitative Value of Outcomes — Matrix redrawn so each square is sized as percent of decisions: Even though he loses nine times out of 10, he still doubles his money.
Calculus I: Lesson Exponential Growth and Decay
Biology, anthropology, computational science, and networks in phylogenetic analysis Tuesday, October 17, Networks, not trees, identify “weak spots” in phylogenetic trees A major application of networks in exploratory data analysis is to identify signal oddities and visualise ambiguity. Thus, they would be the natural choice when it comes to pinpointing weaknesses in phylogenetic trees.
In other words, whenever we try to translate branching patterns into monophyletic groups. These are topological phenomena that are rather the rule than the exception when studying extinct groups of organisms e.
Notation and de nitions. Matrix concepts are useful because the cor-relation function de ned above can be considered as a real, symmetric matrix. A permutation of the elements corresponds to a symmetric permutation of this matrix, a permutation of the matrix elements formed by permuting the rows and the columns in the same fashion.
We infuse messages with meaning automatically, fooling ourselves to believe that the meaning of a message is carried in the message. But it is not. This is only an illusion. Meaning is derived from context and prior knowledge. Meaning is the interpretation that a knowledge agent, such as a human, gives to a message, but it is different from the physical order that carries the message, and different from the message itself. Meaning emerges when a message reaches a life-form or a machine with the ability to process information; it is not carried in the blots of ink, sound waves, beams of light, or electric pulses that transmit information.
And it is the arrow of complexity—the growth of information—that marks the history of our universe and species. Billions of years ago, soon after the Big Bang, our universe did not have the capacity to generate the order that made Boltzmann marvel and which we all take for granted. Since then, our universe has been marching toward disorder, as Boltzmann predicted, but it has also been busy producing pockets that concentrate enormous quantities of physical order, or information.
Our planet is a chief example of such a pocket. When one first encounters the second law of thermodynamics, it’s easy to tumble into despair at the pointlessness of everything. With the universe fated to collapse into heat death eventually, what is the point of it all? In manifestations of order we see intent, in intent we interpret meaning, and in meaning we find comfort. Information, when understood in its broad meaning as physical order, is what our economy produces.
Complete relationship chart between psychological (“personality”) types
Numbers put reality into perspective, and, from there, we can make healthy and informed decisions about love. Why older men want younger women. Why older women want younger men.
Nov 17, · Description graph of the half-age-plus-seven rule never date anyone under half your age plus 7, which claims to dictate what age disparity between two people is acceptable in dating romantic intimate relationships during the late 20th century early 21st century called the standard creepiness rule in the ing to this rule, the age of.
Graphical conventions[ edit ] Directed graph with arrowheads showing edge directions Graphs are frequently drawn as node-link diagrams in which the vertices are represented as disks, boxes, or textual labels and the edges are represented as line segments , polylines , or curves in the Euclidean plane. Quality measures[ edit ] Many different quality measures have been defined for graph drawings, in an attempt to find objective means of evaluating their aesthetics and usability.
Planar graph drawn without overlapping edges The crossing number of a drawing is the number of pairs of edges that cross each other. If the graph is planar , then it is often convenient to draw it without any edge intersections; that is, in this case, a graph drawing represents a graph embedding. However, nonplanar graphs frequently arise in applications, so graph drawing algorithms must generally allow for edge crossings.
Drawings with smaller area are generally preferable to those with larger area, because they allow the features of the drawing to be shown at greater size and therefore more legibly. The aspect ratio of the bounding box may also be important. Symmetry display is the problem of finding symmetry groups within a given graph, and finding a drawing that displays as much of the symmetry as possible.
Some layout methods automatically lead to symmetric drawings; alternatively, some drawing methods start by finding symmetries in the input graph and using them to construct a drawing. In polyline drawings, the complexity of an edge may be measured by its number of bends , and many methods aim to provide drawings with few total bends or few bends per edge.
Deeper levels of Game
The purpose of hydraulic fracturing is to change the flow pattern in the reservoir from one that converges radially on the well bore Figure 2 with flow resistance concentrated near the wellbore, to one where flow in the reservoir is linear to a highly conductive fracture that conducts fluid to the wellbore with minimal flow resistance Figure 3. The success of this operation depends upon the conductivity of the hydraulic fracture and how successfully this conductivity can be retained following the treatment.
These, in turn, depend largely upon the design and execution of the fracturing treatment. A hydraulic fracture is created in a subsurface formation when a fluid is pumped into that formation at a rate faster than the formation can accept the fluid through its matrix permeability. For example, Figure 4 illustrates the pressure versus time behavior at the surface of a well that is being fractured. As fluid is pumped into the target formation at a rate sufficient to fracture the well, the pressure at the formation face builds up rapidly to the point that the formation fails and a fracture is developed.
A rich hierarchy of matrix classes, including triangular, symmetric, and diagonal matrices, both dense and sparse and with pattern, logical and numeric entries. Numerous methods for and operations on these matrices, using ‘LAPACK’ and ‘SuiteSparse’ libraries.
For example, if we re-designed our signup page, half our incoming users would get the new page the “test group” and the rest would get the old page and serve as a baseline measure the “control group”. Per-user random assignment is a simple, powerful way to test if a new feature changes user behavior Did the new signup page entice more people to sign up? It’s the perfect tool for most testing situations. Unfortunately, if you’re doing tests for a product that relies heavily on interaction between users — such as a dating app — doing random assignment on a per-user basis can lead to unreliable experiments and misleading conclusions.
Why per-user assignment can fail The whole point of OkCupid is to get users to talk with one another, so we often want to test new features designed to make user-to-user interactions easier or more fun. Let’s say one of our devs built a new video-chat feature and wanted to test if people liked it before launching it to all of our users. Video chat only works if both users have the feature, so there are two ways to run this experiment: Both approaches have major limitations.
If you let the test group use video chat with anybody, the people in the control group wouldn’t really be a control group because they’re getting exposed to this new video chat feature.
The pitfalls of A/B testing in social networks
The big data tidal wave is transforming the database management industry, employee skill sets, and business strategy as organizations race to unlock meaningful connections between disparate sources of data. Graph Databases are rapidly gaining traction in the market as an effective method for deciphering meaning but many people outside the space are unsure of what exactly this entails.
Generally speaking, graph databases store data in a graph structure where entities are connected through relationships to adjacent elements. The fact is, we all encounter the principles of graph databases in many aspects of our everyday lives, and this familiarity will only increase. Consider just a few examples:
Pressing [ZOOM] or [ZOOM] to have the calculator graph the function using the ZTrig or ZoomFit command produces similar results. But this works when you’re graphing pure .
Subtract baseline and combine columns. Compute each value as a fraction of its row, column or grand total. Prism will run in a screen as small as x While it runs fine on 64 bit versions of Windows, it is a 32 bit program. If you use OS X Prism requires 90 megabytes of space on the hard drive. Read what customers say about GraphPad Prism On graphing I was able to use the demo yesterday to create two layouts of publication-quality scientific graphics in an amazingly short time.
I hope we’re able to buy GraphPad Prism because this software is a pleasure to use, very intuitive and perfectly suited to my boss’s needs and my abilities. Thank you for making such great software.
Graphs and Matrices
This usually happens when you are reaching higher level of the game. I have no idea where this will take me. Sometimes I feel like Neo in Matrix, it goes on and on, there is no end. There are 2 basic elements in seduction.
An Investigation into Spectral Sequencing using Graph Distance Rong Liu, Hao Zhang, and Oliver van Kaick GrUVi Lab, School of Computing Sciences.
See Article History Sigillography, the study of seals. A sealing is the impression made by the impact of a hard engraved surface on a softer material, such as clay or wax, once used to authenticate documents in the manner of a signature today; the word seal Latin sigillum; old French scel refers either to the matrix or die or to the impression.
Seals are usually round or a pointed oval in shape or occasionally triangular, square, diamond, or shield-shaped. Collection of Randy Benzie Medieval matrices were usually made of latten—a kind of bronze—or of silver. Ivory and lead were occasionally used, gold very rarely. Steel was used from the 17th century. Matrices could include intaglio gems. The usual material for the impression was sealing wax , made of beeswax and resin , often coloured red or green.
In southern Europe, notably in the papal Curia, lead and occasionally gold were used. Shellac, the wax used today, was introduced in the 16th century. Seals were used to establish the authenticity of such documents as charters and legal agreements and for the verification of administrative warrants. In southern Europe, early medieval documents were drawn up by notaries and authenticated with their written signa, but this never replaced seals in northern Europe.
Forgeries were manufactured as early as the 12th century, indicating how important seals had become. From that time, also, seals were used to close folded documents and thus to guarantee their secrecy.
Dating Age Range Calculator
Jinxed, a vintage edgematching puzzle by Tryne. There are 24 triangular tiles, the edges of which are colored with a dot in one of four colors red, yellow, white, and green. The tiles are to be arranged into a hexagon such that all touching edges match and the border is all red. It is possible to solve the puzzle with other border constraints, too.
arallel Graph Coloring Algorithms J. R. Allwrigh t Scho random triangulated meshes and graphs from sparse matrix problems. 1 In tro duction Man ysim t in coloring the graph and in up dating the edges and v ertices of the graph. F or an adaptiv e grid PDE solv er, man y up dates will generally o ccur b et w.
Candela An environment for image processing. It is a library primary dealing with storing and retrieving images in files and accessing the images in memory. It includes support for many different display systems, and offers a continuously growing set of image processing routines on top of the basic system. Coin uses scenegraph data structures to render real-time graphics suitable for mostly all kinds of scientific and engineering visualization applications.
Coin is portable over a wide range of platforms: Coin is built on the industry-standard OpenGL immediate mode rendering library, and adds abstractions for higher-level primitives, provides 3D interactivity, immensely increases programmer convenience and productivity, and contains many complex optimization features for fast rendering that are transparent for the application programmer. Open Inventor, for those who are not familiar with it, has long since become the de facto standard graphics library for 3D visualization and visual simulation software in the scientific and engineering community.
It has proved it’s worth over a period of more than 10 years, it’s maturity contributing to it’s success as a major building block in thousands of large-scale engineering applications around the world. It is available as either a C or Fortran library, and stores the graphics information in a device independent metafile that is converted by a device driver program for plotting on various devices. Features include several fonts for annotations, plotting of 2- and 3-D axis plots, plotting of curves, elementary routines for lines, vectors, and outlined or filled regions, 3-D graphics, contouring, and geographical projections.
Versions for other platforms are available but cost a bit more. The goal of DIVERSE is to enable developers to quickly build applications that will run on the desktop as well as various immersive systems. Dore A 3D graphics subroutine library that provides a comprehensive set of tools for creating graphics applications. It is easy to use, portable, and extendable.
Introductory Graph Theory by Gary Chartrand
The Archimedean spiral , studied by Archimedes as a method to trisect an angle and square the circle. Analytic geometry allowed curves, such as the Folium of Descartes , to be defined using equations instead of geometrical construction. A fundamental advance in the theory of curves was the advent of analytic geometry in the seventeenth century. This enabled a curve to be described using an equation rather than an elaborate geometrical construction.
The Math Forum’s Internet Math Library is a comprehensive catalog of Web sites and Web pages relating to the study of mathematics. This page contains sites relating to Trigonometry.
Why was the student afraid of the y-intercept? She thought she’d be stung by the b. What do you call friends who love math? What does Algebra and my dick have in common? They’re both hard for you. Why wont Goldilocks drink a glass of water with 8 pieces of ice in it?
The Hype Around Graph Databases And Why It Matters
Renaissance Now, let’s look at some specific examples. One type of atom that does not normally react is Neon. See the picture to the left.
An array is a collection of items stored at contiguous memory locations. The idea is to store multiple items of the same type together. This makes it easier to calculate the position of each element by simply adding an offset to a base value, i.e., the memory location of the first element of the.
In order to illustrate the concept of multivariate distributions we start with a simple extension to the Normal distribution, as this is probably the most important of the many possible distributions of this type. In the discussion of the Normal distribution we have already mentioned its extension to the bivariate case as the Bivariate Normal. The joint probability of x and y, assuming they are independent, is simply the product of their separate Normal pdfs, so we have: This distribution is a particular instance of the Bivariate Normal and can be used to obtain so-called circular error probabilities.
Strictly speaking this model is for elliptical regions, since the two standard deviations may not be equal. With equal standard deviations a true circular model is obtained: Now r can be seen to be the radius of a circle, so the distribution effectively is giving the probability that a point will be observed within a radius r of the center. This kind of problem arises in military ballistics, where the target is the center of the distribution and shots fired are affected by random factors that cause some vertical and horizontal deviation.