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Hemalatha Thiagarajan

National Institute of Technology Tiruchirappalli
Tamil Nadu, India
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Recovering precious classroom time
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Hemalatha Thiagarajan first discovered OpenCourseWare several years ago during an Internet search for materials on artificial intelligence. A professor of mathematics and computer science at the National Institute of Technology Tiruchirappalli, in Tamil Nadu, India, Thiagarajan was dissatisfied with the traditional textbook on artificial intelligence, and was hoping to find materials to supplement her lectures.

Hemalatha Thiagarajan¦b¼Æ¦~«e¬°¤H¤u´¼¼z¸ê®Æ°µºô»Úºô¸ô¬d¸ß®É²Ä¤@¦¸µo²{¡u¶}©ñ¦¡½Òµ{­p¹º¡v¡]OCW¡^¡C¦o¬O¤@¦ì¦L«×Tamil Nadu¬Ù°ê¥ßTiruchirappalli§Þ³N¾Ç°|¼Æ¾Ç©M¸ê°T¬ì¾Ç±Ð±Â¡CThiagarajan¨º®É­Ô¤£º¡·N¶Ç²Îªº¤H¤u´¼¼z±Ð¬ì®Ñ¦Ó§Æ±æ§ä¤@¨Ç§÷®Æ¸É ¥R¦oªºÁ¿½Ò¤º®e¡C

The OCW materials she found for “Course 6.825 – Techniques in Artificial Intelligence” were just what she was looking for, and she quickly adapted several PowerPoint presentations and lectures to fit her syllabus. To her surprise, however the materials didn’t just improve the content of her lectures; they also allowed her to cover more material in the same number of classes. “I used to spend a lot of class time drawing pictures on the board,” Thiagarajan said. “In data structures, for example, I need to show a lot of pictures of data trees and structures, and I had to draw all of them. Here, with the click of a button, I can show them something which has been very neatly and very beautifully done.”

·í®É¦o§ä¨ìªºOCW§÷®Æ¬O¨Ó¦Û³Â¬Ù²z¤u¾Ç°|ªº¤H¤u´¼¼zÀ³¥Î§Þ³N¡]6.825 Techniques in Artificial Intelligence¡^½Ò µ{¡A¥¿¬O¦o©Ò´Á±æ´M§äªº¡C¦o«Ü§Ö¦a±Ä¥Î¦n´X±i§ë¼v¤ù©MÁ¿¸q¨Ó°t¦X¦oªº½Òµ{¤jºõ¡C¥O¦o·N¥~ªº¬O¡A³o¨Ç§÷®Æ¤£¶È¬O§ïµ½¤F¦oªºÁ¿½Ò¤º®e¡A¤]Åý¦o¦b¬Û¦Pªº½Ò°ó®É¼Æ ¤¤¯à²[»\§ó¦hªº§÷®Æ¡CThiagarajan »¡:¡u§Ú¹L¥h²ßºDªá«Ü¦h½Ò°ó®É¶¡¦b¶ÂªO¤Wµe¤@¨Ç¹Ïªí¡C¨Ò¦p¡A¦b¸ê®Æµ²ºc½Òµ{¡A§Ú»Ý­nÅã¥Ü«Ü¦h¸ê®Æ¾ðª¬µ²ºc¹Ï¡A¦Ó§Ú¥²¶·§â¥¦­Ì¥þ³¡µe¥X¨Ó¡C¦b³o¸Ì¡A¥u­nÂI¿ï ¤@­Ó«öÁä¶s¡A§Ú«K¥i¥HÅã¥Üµ¹¥L­Ì¬Ý³\¦h»s§@ºë¬üªº¹Ï¤ù¡C¡v

Initially, her students were not entirely happy with her new approach. “For the first month,” she recalls, with evident amusement, “many of them felt that the course was moving too fast. Obviously, when I have to write everything on the board, I go more slowly, so they get a lot of time to follow the whole thing.”

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In the end, though, Thiagarajan received rave reviews from her students —
both on the amount and the quality of the material she was able to cover.


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Thiagarajan also has found that OCW is a valuable resource for students who would benefit from a deeper look at a particular topic. In her own teaching, Thiagarajan is constrained by a rigid university syllabus. So when a topic emerges in class that she cannot spend enough time on, she is quick to steer her students to OCW. “I’ve told my students that some of the OCW courses would be very useful for them, when I can’t cover these topics fully enough, but they’re important to the students. And the students find it very useful.”

Thiagarajan¤]µo²{OCW¬O¤@­Ó«D±`¦³»ù­Èªº¸ê·½¡AÅý¾Ç¥Í¦b¹ï¬Y¤@­Ó¥DÃDªº°µ²`¤J±´°Q®ÉÀò±o§U¯q¡CThiagarajanªº±Ð¾Ç¤W¨ü­­©óºò´êªº ¤j¾Ç½Òµ{¤jºõ¡A¦]¦¹·í¤@­Ó¥DÃD¯Ç¤J½Òµ{¦Ó¦oµLªkªá¨¬°÷ªº®É¶¡¥hÁ¿¸Ñ¡A¦o·|¥ß¨è¾É¤Þ¦oªº¾Ç¥Í¨ìOCW¤W¡C¡u·í§ÚµLªk«Ü¥þ­±©Ê¦a²[»\©Ò¦³ªº¥DÃD¡A¦ý¬O¥¦­Ì¹ï©ó ¾Ç¥Í¨Ó»¡«o¬O«Ü­«­nªº®É­Ô¡A§Ú§i¶D¾Ç¥Í¦³¤@¨ÇOCW½Òµ{¹ï¥L­Ì«D±`¦³À°§U¡A¦Ó¾Ç¥Í¤]µo²{¥¦¯uªº«Ü¦³¥Î¡C¡v


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