Dcision Tree, How to See Under/over Fitting with Just Looking at the Leafs?

You can look at number of leaves. If number of leaves are very high compare to number of classes available for classification then tree might be overfitting or vice versa. You can also check number/percentage of training examples correctly classify by each and every leaf. You can put some threshold on top of that so that every leaf has to classify threshold of examples correctly. But again, cross validation and holdout method will give you better idea for overfitting or underfitting

1. If a dog keeps urinating on a tree will it kill the tree?

Urine is mostly diluted nitrogenous waste. Nitrogen is a necessary nutrient for plants, so when the substance seeps into the roots of the tree, it will actually contribute to the health of the tree

2. what kind of maple tree is this?

Could be Acer saccharinum

3. Binary tree implementation in Scala

Just checking (left

4. if the tree of knowledge was evil?

Humans are flawed. It's best not to think about it, because you can not change it, and you will get depressed!

5. find all symbolic links in a directory tree pointing outside that tree

Use bindfs to create another view of that directory tree.Then use the symlinks utility (shipped by many distributions, or compile it from source) to detect cross-filesystem links.(Note that parsing the output assumes that your symbolic links and their targets do not contain newlines, nor do paths to symbolic links contain the substring -> . ) That same utility can also convert absolute symlinks to relative (but you would want to do that from the original location)

6. My Kitten is stuck in a tree !?

you can ask a neighbor for a flash light and you can take a basket and tie it to a rope lift that up into the tee and have your cat jump in it good luck

7. Spanning Tree interruption of service

Assuming a default configuration, the network downtime with STP would be 30 seconds long. This 30 second time period commences from the time network switch detects a new device connected to it - basically when the computer turns on. Another way of saying network downtime is that the Spanning-Tree Protocol is in the middle of moving the port from a blocking state to a forwarding state. Answering your other question, it is for just for the port and not for the switch.That's STP in ultra basic terms, obviously there's more to it than that and it took me a while to understand. Would definitely recommend you check any online vids on it before turning on as it is intended for the quite specific purpose of loop elimination. In a consumer or home setup for example there would not be a real need for this

8. HELP! Strange Animal in tree!!!?

It could of been a bee's hive or cicadas, cicadas are flying, plant-sucking insects of the Order Hemiptera; their closest relatives are leaf hoppers, tree hoppers, and fulgoroids. Adult cicadas tend to be large (most are 25-50mm), with prominent wide-set eyes, short antennae, and clear wings held roof-like over the abdomen. Cicadas are probably best known for their conspicuous acoustic signals or "songs", which the males make using special structures called tymbals, found on the abdomen. There may be as many as 3000 different cicada species worldwide

9. "Mango” or "mango tree”?

Me? I say "apple tree" for the plant, and "apple" for the fruit. Likewise for mango, lemon, coconut, walnut, etc.But if we are only talking about a particular variety of apple then the term "tree" may be omitted, but it's not a given, e. g. "cox's orange pippin"Cox's Orange Pippin Apple has been an English institution for over 150 years. It arose as a chance seedling in the 1820s in the orchard of a retired brewer named Richard Cox, near the present-day location of Heathrow Airport. It's a yellow apple with a red blush, which makes it appear orange-hence, the "Orange" part of its name. The "Pippin" part of its name is an old English word for an Apple Tree grown from a seed, or "pip." Cox's Orange Pippin was not made available to other growers until the 1850s, and it was not grown commercially until the 1860s, but once it finally became known, it won the hearts of a nation. (source)Oak, Ash, Birch, Beech, Pine, Sycamore, and Willow, etc. are well-known trees, we do not normally speak about their fruits, so actually saying "oak tree" is a bit redundant. Below are images of different trees taken from Wikipedia, note that when the fruit is commonly known, the noun "tree" is needed as in "lemon tree" and "walnut tree" whereas "Beech" and "Cypress" do not require it