MELVYL INSPEC DATABASES TELNET STATISTICS
Time period: 07/01/01 through 07/31/01
1.0 SUMMARY STATISTICS
_______________________
1.1 Total sessions:
____________________
Zero results may indicate no access to the database
Location Library Remote Total
________ _______ ______ _____
Berkeley 39 1,161 1,200
Davis 271 7 278
Irvine 285 0 285
Los Angeles 4 580 584
Riverside 13 65 78
San Diego 179 580 759
San Francisco 104 0 104
Santa Barbara 13 227 240
Santa Cruz 16 137 153
Lawrence Berkeley 0 155 155
Lawrence Livermore 0 130 130
Los Alamos 0 0 0
Other - UC 2 231 233
Other-Network UC n/a 1,993 1,993
_______ ______ _____
926 5,266 6,192
Relative use of INSPEC databases:
Number of Number of Number of
Sessions FIND commands Records Displayed
_________ _____________ _________________
INS (current) 3,820 8,907 75,232
INS90 856 1,529 9,247
INS85 626 1,094 5,736
INS80 459 768 5,410
INS69 431 921 7,174
Per hour usage:
Time Sessions Finds Records Displayed
__________ __________ __________ _________________
12-2 a.m. 187 484 3,862
2-4 a.m. 150 371 4,162
4-6 a.m. 147 328 2,357
6-8 a.m. 234 571 4,425
8-10 a.m. 676 1,393 8,766
10-12 a.m. 1,072 2,284 17,248
12-2 p.m. 877 1,802 13,555
2-4 p.m. 1,193 2,397 19,608
4-6 p.m. 888 1,906 13,973
6-8 p.m. 366 751 6,535
8-10 p.m. 206 505 3,125
10-12 p.m. 196 427 5,183
__________ __________ __________ _________________
Total: 6,192 13,219 102,799
1.2 FIND commands
__________________
Zero results may indicate no access to the database
Number of FIND commands issued by location:
Location Library Remote Total
________ _______ ______ _____
Berkeley 68 2,778 2,846
Davis 587 16 603
Irvine 691 0 691
Los Angeles 6 1,167 1,173
Riverside 29 174 203
San Diego 502 1,148 1,650
San Francisco 377 0 377
Santa Barbara 22 475 497
Santa Cruz 35 234 269
Lawrence Berkeley 0 376 376
Lawrence Livermore 0 472 472
Los Alamos 0 0 0
Other - UC 7 525 532
Other-Network UC n/a 3,530 3,530
_______ ______ _____
2,324 10,895 13,219
1.3 Records displayed
______________________
Zero results may indicate no access to the database
Number of Records Displayed by location:
Location Library Remote Total
________ _______ ______ _____
Berkeley 477 24,744 25,221
Davis 6,273 32 6,305
Irvine 6,752 0 6,752
Los Angeles 309 7,226 7,535
Riverside 165 859 1,024
San Diego 2,316 9,426 11,742
San Francisco 2,611 0 2,611
Santa Barbara 256 5,706 5,962
Santa Cruz 119 2,803 2,922
Lawrence Berkeley 0 2,914 2,914
Lawrence Livermore 0 4,002 4,002
Los Alamos 0 0 0
Other - UC 8 5,454 5,462
Other-Network UC n/a 20,347 20,347
_______ ______ _____
19,286 83,513 102,799
1.4 Response time
__________________
Search response time from receipt of command at
DLA until transmission of response:
Average in seconds 1.1
Standard deviation in seconds 6.2
Display response time from receipt of command at
DLA until transmission of a complete screen:
Average in seconds 0.1
Standard deviation in seconds 0.1
2.0 INSPEC Databases Detailed Statistics
_________________________________________
Median session length (minutes:seconds) 9:56
Average session length (minutes:seconds) 13:28
Longest session recorded (minutes:seconds) 1147
Average number of searches completed per session 2.1
Retrievals per search - median 5.0
Retrievals per search - average 1461.7
Retrievals per search - standard deviation 23120
Percent of searches completed with 0 results 29.3%
Percent of searches entered that are long 5.3%
Percent of long searches completed
(includes partial results) 72.9%
Commands entered, by type, excluding errors:
Total Percentage
__________ __________
FIND 12,088 31.6%
DISPLAY (excluding automatic displays) 13,566 35.5%
BROWSE 17 0.0%
SELECT 2 0.0%
HELP 240 0.6%
EXPLAIN 413 1.1%
SET/RESET 3,821 10.0%
SHOW 83 0.2%
ADD ON (AND, OR, AND NOT) 1,130 3.0%
LOGON or LOGOFF 5,032 13.2%
COMMENT 0 0.0%
SAVE 382 1.0%
USE 17 0.0%
OTHER 1,460 3.8%
FINDs completed: RETRIEVALS PER NON-
TOTAL ZERO RESULTS ZERO RESULT SEARCHES
_____________ ______________ ______________________
% of % of
all all for Std.
No. FINDs No. Index Median Avg. Dev.
______ ______ ______ _______ ______ _______ _______
By index:
PERSONAL AUTHOR 6,056 45.2% 1,468 24.2% 16 84.8 383.5
TITLE WORD 2,553 19.1% 1,338 52.4% 6 212.6 3976.9
EXACT TITLE 161 1.2% 104 64.6% 1 84.6 517.1
JOURNAL 452 3.4% 160 35.4% 22 1758.7 7753.0
EXACT JOURNAL 164 1.2% 83 50.6% 11 834.0 3203.3
SUBJECT 395 2.9% 111 28.1% 25 1041.8 8361.8
EXACT SUBJECT 26 0.2% 3 11.5% 12 3802.7 6734.5
THESAURUS 26 0.2% 2 7.7% 20 3018.5 4948.7
EXACT THESAURUS 12 0.1% 5 41.7% 1,603 919.6 855.5
KEYWORD 2,418 18.0% 435 18.0% 23 4110.0 41437.4
SUBFILE 9 0.1% 1 11.1% 66 108.0 110.8
FORM 77 0.6% 11 14.3% 23 718.0 2558.5
DATE 159 1.2% 34 21.4% 12 124.9 600.3
ADDED 56 0.4% 30 53.6% 11 12.3 8.1
ARTICLE 0 0.0% 0 0.0% 0 0.0 0.0
AUTHOR AFFIL. 290 2.2% 61 21.0% 25 6377.2 24977.2
CONFERENCE 65 0.5% 24 36.9% 71 5519.3 25212.0
LANGUAGE 6 0.0% 0 0.0% 89 124.7 125.9
CHEMICAL NAME 35 0.3% 8 22.9% 42 68.2 75.9
ISSN 8 0.1% 3 37.5% 3,317 4156.6 4487.3
ISBN 2 0.0% 1 50.0% 30 30.0 0.0
ID NUMBER 0 0.0% 0 0.0% 0 0.0 0.0
PERIODICAL 384 2.9% 72 18.8% 7 153.3 1134.2
EXACT PE 32 0.2% 4 12.5% 4 520.8 2695.1
RPE 0 0.0% 0 0.0% 0 0.0 0.0
XRP 0 0.0% 0 0.0% 0 0.0 0.0
COMMENTS 0 0.0% 0 0.0% 0 0.0 0.0
Other indexes 11 0.1% 6 54.5% 14 11.4 6.3
RETRIEVALS PER NON-
TOTAL ZERO RESULTS ZERO RESULT SEARCHES
_____________ ______________ ______________________
% of % of
all all for Std.
No. FINDs No. Index Median Avg. Dev.
______ ______ ______ _______ ______ _______ _______
By number of indexes:
Multiple 1,447 12.2% 515 35.6% 6 355.5 4666.8
Single 10,452 87.8% 2,923 28.0% 19 1463.5 21931.2
BROWSEs completed: RETRIEVALS PER NON-
TOTAL ZERO RESULTS ZERO RESULT SEARCHES
_____________ ______________ ______________________
% of % of
all all for Std.
No. BROWSEs No. Index Median Avg. Dev.
______ _______ ______ _______ ______ _______ _______
By index:
THESAURUS 17 100% 4 23.5% 3 3.6 2.6
EXACT THESAURUS 0 0.0% 0 0.0% 0 0.0 0.0
DISPLAY commands, by type, excluding automatic displays:
REVIEW 4.0%
SHORT 84.3%
LONG 1.9%
TAGS 0.2%
FIELDS 4.1%
BROWSE REVIEW 0.1%
BROWSE LONG 0.0%
PERIODICALS 4.3%
COMMENTS 0.0%
Other 1.2%
2.2 Error, EXPLAIN and HELP statistics
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Percent of commands that contained errors 8.7%
Ten most frequent errors:
1. NS command - no next screen 45.1%
2. First word of command is invalid 24.9%
3. FIND command with invalid index name 6.0%
4. Max. # of ports to a Z39 db are in use 3.1%
5. DISPLAY command contains invalid word 3.0%
6. PS command - no previous screen 2.0%
7. Valid command at an inappropriate time 1.5%
8. Invalid SET DB INS command issued 1.4%
9. DISPLAY command-record numbers too large 1.2%
10. NS of SHOW/EXP command-no next screen 1.2%
11. All others 10.7%
Ten most frequent EXPLAIN requests:
1. FIND (INSPEC DBS) 13.3%
2. INSPEC BACKFILES 12.3%
3. INSPEC DATABASES 11.9%
4. INDEXES (INSPEC DBS) 5.6%
5. GUIDE (INSPEC DBS) 4.8%
6. MAIL 4.6%
7. Unrecognized term 4.6%
8. 1752 4.1%
9. COMMANDS (INS/PSY/ABI/BIO DBS) 3.9%
10. DATABASES 3.9%
11. All others 31.0%
Ten most frequent HELP situations:
1. Help requested from SET DB command 23.1%
2. First word of command is invalid 12.7%
3. DISPLAY command - middle of >1 screen 6.1%
4. FIND command with invalid index name 5.8%
5. FIND command with zero results 5.5%
6. NS of SHOW/EXP command-no next screen 5.2%
7. DISPLAY command - last of >1 screen 4.0%
8. NS command - no next screen 3.7%
9. FIND command retrieves >1 book 3.7%
10. DISPLAY command-first of >1 screen 3.4%
11. All others 26.8%
Ten most frequent SHOW requests:
1. HISTORY 70.0%
2. INSPEC LOADING STATISTICS 7.5%
3. GLOSSARY 5.0%
4. SETTINGS (INS/PSY DBS) 3.8%
5. MAIL STATUS 3.8%
6. INSPEC NEWS 2.5%
7. SYSTEM NEWS 2.5%
8. SEARCH 2.5%
9. 0210 1.3%
10. LIBRARY NEWS 1.3%
11. All others 0.0%
INSmm/dd ins MELVYL INSPEC DATABASES TELNET STATISTICS (weekly)