He sucks overall bad teacher.

He is very rude and mean. He always presume students are bad. I don't even understand why he wants to be a professor, an educator which is supposed to be helpful and understanding.

ERNST LIESS: Simply idiotic and stupid. Always have rude comments, idiot, stupid, useless...

I am Math major w/ CS minor. Not particularly good in CS, but so far all A's in all classes. But this one is killing me. No questions are answered outside the classroom, crude and talks like all of us are stupid. The textbook is written by him, many wordy but useless fillers, lack of detailed examples to follow. Worst of all, he cannot teach.

He treats every student as if they're stupid. Almost the entire class focuses on things like VMM and Garbage Collection, but he has absolutely no idea how they actually work. He says something laughably incorrect every day, but never admits a mistake. Every question he gives is ambiguous or makes no sense at all.

Terrible teacher, Will not answer any questions outside of class. In class expect your question to come with some smart remark. Homeworks unclear. Book is useless in that it is written for a professor not a student and terrible examples. Does not even maintain a website of class information. If possible avoid him.

The Book is useless and his explanations are useless.He wrote the book, and talks just like how the book is written. When you ask question, he responds like your an idiot. If you have to take this class, REALLY try to get friends and figure it out, because he is not going to help you much. The class is graduate lvl difficulty for undergrad class.

His teaching and textbook are extremely dry and assumes you already well knowledgeable in the material. His exams and assignments are almost impossible to ace on your own. Luckily he recycles everything and doesn't care that people have caught on. His classes are mostly focused on how to beat the system rather than learning the material.

The textbook did not help at all. His lectures were boring and did not make any sense. The assignments are incredibly difficult and he does not seem willing to help his students out at all.

the assignment is hard,thats reasonable. The exams are like homework,but still hard. Ok acceptable. But the professor will not answer any questions outside of the class,not even the problems from his book and notes,saying that they are content question which left u alone with no help even if you want to learn. No curve. good luck if u want to take

Not an easy class. However, easy test-graders. His lectures are difficult to follow and he constantly asserts his intelligence in the classroom. Don't ask dumb questions, he will put you on the spot. The exercise sets takes a long time, but he does so so you can have good practice. Didn't get much out of the course, but hey its a theory class.

four exams included final. no hws. book is completely useless to read. when he writes on board don't understanding anything. no curve no extra credit.

The least effective professor I've ever had. He flat out refuses to answer questions sometimes, and when he does answer, be prepared to either endure some verbal abuse first or end up more lost on the material than you were before you asked. Lectures are meandering and topics don't follow any kind of order so prepping for the material is impossible

I hate him with a passion. He does not care for his students. Just writes random nonsense on the board. He was not mean to teach. His homeworks and tests are hard. Literally nobody likes him. Not even the smartest kid in class likes him.

The textbook is totally useless and lectures are hard to follow. Take thorough notes during lecture even if you have no idea what he's talking about (which is usually the case) because exam material comes straight from lectures. If you want to ask a question he'll only answer if you ask during class and he will be rude even if it's a good question.

If you love yourself, you won't take this professor. He lacks the capability to explain anything, he is RUDE when you ask questions, his textbook should be banned from UH, and he doesn't seem to care about his student's education. If you unfortunately have to take his class, go ahead and bookmark Abdul Bari on youtube. Thank me later.

Poorly prepared lectures. Seems distracted and not interested in teaching the class. Be prepared to be told he has more important things to do than be there. A lot of homework. Lectures don't help prepare for the test. The tests are just the hw.

This professor sucks. If possible, take someone else.

This professor is terrible. The handwriting is illegible, he refuses to record lectures, and he barely goes over important topics on the exams. No homework, but you're only learning from a pdf of exercise sets and hoping that the exam doesn't have content he went over for 2 minutes verbally. And don't bother asking many questions, he gets mad easy

Leiss is awful. He uses skype for business to teach, writes on blank ppt slides, his handwriting is illegible & he teaches differently than any source you can find. He records his lectures but refuses to share his recordings or notes (he struggles with basic tech). Luckily students recorded and shared them. Grades only rely on 4 exams (20,20,20,40)

Professor Leiss teaches off of Skype which doesn't work well. His exam turn in system is a joke and unpredictable. His exams are based off of exercise sets which is nice but you learn more off of those than the teacher. Honestly, avoid taking him if you can.

He'll try his best to make his lectures as boring and complicated as he could. No solution is given to HW and test answers have to be in his way that nobody understands. This professor should be banned from teaching this course. Hands down the worst professor I've ever had in my entire education.

Came to class every lecture with nothing prepared. Refused to share the scribbles he'd come up with on the spot in class or record the lectures for an online class. Couldn't figure out how to use teams, so we used skype, where anyone could mute him at any time. He would be rude and then someone would mute him. Avoid at all costs.

He walks up on stage with a whiteboard marker in his hand, no powepoints and no notes. Dude comes up with scribbles on the spot and writes like tiny ants. Ask him a question and he won't answer it. people just study his old tests and teach themselves, all grade is test based and no curve what so ever. Hard class and that's coming from a 3.98 gpa.

Took him for Automata. 4 Exams only no hws, all of his exams are very similar to the old exams so if you want you can study those instead. His lectures are confusing and boring, so I went on Youtube for that whole semester, stopped attending to his class and managed a C+ with help from classmates. No curve cuz he said he won't "punish the geniuses"

This professor is pretty awful, and the class is structured to make it difficult and unpleasant. To succeed: Attend lecture to try and learn things his way, since it is very different than online materials or the useless textbook. Do the exercises backwards and forwards. Sit at the front and take pictures of the board. Bring study guides for exams.

Sitting at his lecture right now and I want to kill myself. This has to the most boring professor ever. Can't hear what he is talking about. His handwriting is small and hard to see. I asked him a question yesterday and he didn't answer. He is awful.

The most boring professor I've taken. It's impossible to learn anything from his lectures as he just mumbles in a monotone voice, scribbles in the world's smallest font, and blocks the view of whatever he's writing by standing right in front of it. You're basically paying thousands to teach yourself. The only pro is that his tests are open note.

Leiss should honestly retire. He talks to himself, you won't understand a word he's saying. From the little info I gathered while doing our assignments (4 in total for the entire semester, including tests), I think it's safe to say that the curriculum is archaic. You won't learn anything. Use past exams. Grading is very unpredictable, be careful.

Super disrespectful dude. A huge waste of time and money, you won't learn a thing. He is measurably and objectively the worst CS professor at UH. If I was hanging off the side of a building and the only way to save myself was to take him again I wouldn't do it. He shouldn't be teaching anymore.

I'm impressed how a professor can teach computer science without using or even touching a computer once in the semester. If you want to learn anything, you have to sit in the first few rows. Otherwise, you might as well stay at home, because you won't be able to hear his mumble or see the scribbles on the whiteboard.

The worst CS professor at UH. Doesn't respond to emails, whispers during lectures, and writes too small for a large room. Must study mostly past exams, but even then the TAs are lost while grading your exams. Your grade is a lottery. Interesting subject, horrible professor. AVOID AT ALL COSTS.

I have no words. I implore you to take this class with Singh instead. If there is one piece of advice I could give any of you who are about to take this class, it would be to take it with Singh instead. Save yourself the trouble and the headache. You will literally be learning everything from scratch, by yourself. It is not worth it. Take Singh.

Please someone make this man retire, we deserve better than this

If you are taking this class, you are cooked. I do not understand why he is still teaching and nor do I even understand what he is saying half of the class because he talks on 1 volume. Please retire Leiss, please.

I would recommend taking Leiss if you're just aiming for a good grade; however, you likely won't learn much, as it's hard to understand what he says. If you care about truly understanding the material, I'd suggest not taking him. It's probably time for him to consider retirement.

The class lacked computer use, which felt odd for a computer science course. The professor was often hard to hear even with a microphone. Additionally, there seemed to be little flexibility toward students' situations, like with waitlisted students. He told them they should've came first day even though they were waitlisted.

Horrible, horrible experience. The worst CS professor I've taken yet. Tenure's keeping him here, he needs to retire. I'm sure he used to be fine professor but it's just not true anymore. Only graded on 4 exams. You (or maybe some amazing tutor) have to teach you everything. Lectures are 100% useless. Don't waste your money and time and take Singh.

At first it was comedic watching a senile elder limp around a lecture hall and struggle to work up the wind to finish every sentence. Then you remember how much you're paying for this "education." You won't learn (let alone, hear) one single thing from this man, but exams are reused. You need to network to get them, though

Terrible lecture experience, but class is an easy A since his exams and assignments are very similar year to year, 2 giant assignments that need to be printed and turned in in person. Exams are easy if you prepare well.

He is just talking to himself. Can not listen to his yap more than 5 mins.

Brilliant man, brilliant mind, not good at teaching. Once again I'm sure he is brilliant, and the world is definitely better because of him, but I am paying for him to teach me the subject.

I'm sure Leiss knows the material well, but he talks very quietly and slowly on top of tiny writing. The lectures were practically not worth attending. The only redeeming quality is there were only 2 assignments and 2 exams to prepare for. You will probably be teaching yourself, as TAs and Prof do not help outside of lecture.

you are paying for the A only, because you learn absolutely nothing in this class. Each lecture I attended, I thought the guy was gonna drop any minute.

Leiss' "teaching" is a waste of time. Lectures are useless. Course is passable from TAs lenient grading and repeating HWs and exams. Be ready for a treasure hunt to find old material and waste tons of time working on printed 20 page HW twice the semester. Exams open note. Only recommend if you care about passing and not learning.

Heavy workload, only four grades. The two homework assignments are time-consuming. Lectures are traditional and confusing because of the professor's soft speaking volume. He uses past assignments exactly so networking with previous students is key to succeeding. Not recommended if you prefer modern, organized course shells or digital assignments.