MELVYL INSPEC DATABASES TELNET STATISTICS
Time period: 04/01/00 through 04/30/00
1.0 SUMMARY STATISTICS
_______________________
1.1 Total sessions:
____________________
Zero results may indicate no access to the database
Location Library Remote Total
________ _______ ______ _____
Berkeley 168 2,513 2,681
Davis 296 23 319
Irvine 486 0 486
Los Angeles 77 1,075 1,152
Riverside 39 111 150
San Diego 323 1,434 1,757
San Francisco 91 0 91
Santa Barbara 129 502 631
Santa Cruz 45 182 227
Lawrence Berkeley 0 369 369
Lawrence Livermore 0 341 341
Los Alamos 0 0 0
Other - UC 17 339 356
Other-Network UC n/a 1,476 1,476
_______ ______ _____
1,671 8,365 10,036
Relative use of INSPEC databases:
Number of Number of Number of
Sessions FIND commands Records Displayed
_________ _____________ _________________
INS (current) 6,399 15,287 146,359
INS90 1,542 2,839 16,305
INS85 883 1,619 9,196
INS80 641 1,221 5,419
INS69 571 1,233 9,473
Per hour usage:
Time Sessions Finds Records Displayed
__________ __________ __________ _________________
12-2 a.m. 380 862 6,699
2-4 a.m. 212 547 3,168
4-6 a.m. 163 352 2,462
6-8 a.m. 347 752 4,801
8-10 a.m. 944 1,987 13,739
10-12 a.m. 1,552 3,556 26,117
12-2 p.m. 1,540 3,493 31,678
2-4 p.m. 1,768 3,838 35,855
4-6 p.m. 1,503 3,235 25,953
6-8 p.m. 756 1,567 20,007
8-10 p.m. 495 1,160 8,160
10-12 p.m. 376 850 8,113
__________ __________ __________ _________________
Total: 10,036 22,199 186,752
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 374 5,586 5,960
Davis 729 68 797
Irvine 1,061 0 1,061
Los Angeles 150 2,607 2,757
Riverside 79 253 332
San Diego 992 2,827 3,819
San Francisco 240 0 240
Santa Barbara 324 985 1,309
Santa Cruz 101 443 544
Lawrence Berkeley 0 900 900
Lawrence Livermore 0 797 797
Los Alamos 0 0 0
Other - UC 30 939 969
Other-Network UC n/a 2,714 2,714
_______ ______ _____
4,080 18,119 22,199
1.3 Records displayed
______________________
Zero results may indicate no access to the database
Number of Records Displayed by location:
Location Library Remote Total
________ _______ ______ _____
Berkeley 2,577 67,714 70,291
Davis 4,912 1,212 6,124
Irvine 9,870 0 9,870
Los Angeles 1,268 20,812 22,080
Riverside 424 1,378 1,802
San Diego 3,828 19,490 23,318
San Francisco 1,318 0 1,318
Santa Barbara 1,829 12,066 13,895
Santa Cruz 531 2,413 2,944
Lawrence Berkeley 0 7,400 7,400
Lawrence Livermore 0 6,052 6,052
Los Alamos 0 0 0
Other - UC 1,111 6,593 7,704
Other-Network UC n/a 13,954 13,954
_______ ______ _____
27,668 159,084 186,752
1.4 Response time
__________________
Search response time from receipt of command at
DLA until transmission of response:
Average in seconds 1.2
Standard deviation in seconds 5.3
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) 7:12
Average session length (minutes:seconds) 11:58
Longest session recorded (minutes:seconds) 378:56
Average number of searches completed per session 2.2
Retrievals per search - median 7.0
Retrievals per search - average 563.3
Retrievals per search - standard deviation 7842.7
Percent of searches completed with 0 results 25.6%
Percent of searches entered that are long 4.5%
Percent of long searches completed
(includes partial results) 65.7%
Commands entered, by type, excluding errors:
Total Percentage
__________ __________
FIND 20,127 30.1%
DISPLAY (excluding automatic displays) 23,439 35.1%
BROWSE 40 0.1%
SELECT 48 0.1%
HELP 834 1.2%
EXPLAIN 1,122 1.7%
SET/RESET 5,602 8.4%
SHOW 268 0.4%
ADD ON (AND, OR, AND NOT) 2,050 3.1%
LOGON or LOGOFF 9,445 14.1%
COMMENT 2 0.0%
SAVE 995 1.5%
USE 26 0.0%
OTHER 2,856 4.3%
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 9,606 43.9% 2,133 22.2% 14 67.3 254.6
TITLE WORD 4,545 20.8% 1,746 38.4% 9 206.6 3074.4
EXACT TITLE 92 0.4% 65 70.6% 1 24.8 85.7
JOURNAL 757 3.5% 256 33.8% 136 2979.6 10179.0
EXACT JOURNAL 163 0.7% 73 44.8% 117 1362.5 3025.5
SUBJECT 755 3.4% 195 25.8% 24 1097.9 6937.9
EXACT SUBJECT 38 0.2% 7 18.4% 13 2038.6 4204.6
THESAURUS 101 0.5% 19 18.8% 413 2351.9 3599.2
EXACT THESAURUS 49 0.2% 4 8.2% 570 1062.0 1451.2
KEYWORD 4,272 19.5% 792 18.5% 29 1939.9 15379.9
SUBFILE 36 0.2% 8 22.2% 4 44.7 176.4
FORM 83 0.4% 4 4.8% 20 129.6 247.3
DATE 419 1.9% 98 23.4% 22 132.1 445.9
ADDED 29 0.1% 16 55.2% 8 9.9 8.8
ARTICLE 0 0.0% 0 0.0% 0 0.0 0.0
AUTHOR AFFIL. 289 1.3% 81 28.0% 19 1027.9 4986.6
CONFERENCE 136 0.6% 59 43.4% 122 2079.5 8336.7
LANGUAGE 31 0.1% 6 19.4% 4 32.4 59.6
CHEMICAL NAME 64 0.3% 23 35.9% 18 280.1 1016.6
ISSN 3 0.0% 3 100% 0 0.0 0.0
ISBN 3 0.0% 1 33.3% 172 172.0 185.3
ID NUMBER 2 0.0% 0 0.0% 1 1.0 0.0
PERIODICAL 347 1.6% 70 20.2% 6 212.2 1240.1
EXACT PE 52 0.2% 14 26.9% 4 24.0 52.6
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 23 0.1% 10 43.5% 12 627.8 1710.0
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 2,048 10.4% 651 31.8% 7 192.2 1708.4
Single 17,728 89.6% 4,360 24.6% 19 773.3 8410.6
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 39 97.5% 6 15.4% 5 6.7 10.5
EXACT THESAURUS 1 2.5% 0 0.0% 1 1.0 0.0
DISPLAY commands, by type, excluding automatic displays:
REVIEW 3.5%
SHORT 85.8%
LONG 2.1%
TAGS 0.5%
FIELDS 4.5%
BROWSE REVIEW 0.0%
BROWSE LONG 0.0%
PERIODICALS 2.3%
COMMENTS 0.0%
Other 1.3%
2.2 Error, EXPLAIN and HELP statistics
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Percent of commands that contained errors 10.3%
Ten most frequent errors:
1. NS command - no next screen 40.9%
2. First word of command is invalid 27.8%
3. FIND command with invalid index name 6.7%
4. DISPLAY command contains invalid word 2.6%
5. PS command - no previous screen 1.6%
6. Search term missing from search command 1.4%
7. DISPLAY command - no FIND results 1.3%
8. Valid command at an inappropriate time 1.3%
9. NS of SHOW/EXP command-no next screen 1.2%
10. DISPLAY command-record numbers too large 1.0%
11. All others 14.0%
Ten most frequent EXPLAIN requests:
1. INSPEC DATABASES 15.4%
2. FIND (INSPEC DBS) 12.7%
3. GUIDE (INSPEC DBS) 9.0%
4. LOCATE (INS/PSY DBS) 6.6%
5. INSPEC BACKFILES 6.4%
6. INDEXES (INSPEC DBS) 5.3%
7. DATABASES 4.8%
8. Unrecognized term 4.1%
9. MAIL 3.8%
10. COMMANDS (INS/PSY/ABI/BIO DBS) 3.7%
11. All others 28.0%
Ten most frequent HELP situations:
1. Help requested from SET DB command 24.2%
2. First word of command is invalid 13.1%
3. DISPLAY command-first of >1 screen 7.0%
4. FIND command with zero results 5.5%
5. DISPLAY command - middle of >1 screen 5.3%
6. FIND command with invalid index name 5.0%
7. FIND command retrieves >1 book 4.5%
8. DISPLAY command-complete in one screen 3.5%
9. NS command - no next screen 3.2%
10. DISPLAY command - last of >1 screen 3.1%
11. All others 25.7%
Ten most frequent SHOW requests:
1. HISTORY 36.6%
2. MAIL STATUS 18.1%
3. SEARCH 14.6%
4. INSPEC NEWS 7.5%
5. INSPEC LOADING STATISTICS 5.5%
6. GLOSSARY 4.7%
7. MAIL SETTINGS 4.3%
8. SETTINGS (INS/PSY DBS) 2.0%
9. SYSTEM NEWS 1.6%
10. GLOSSARY A 0.8%
11. All others 4.3%
INSmm/dd ins MELVYL INSPEC DATABASES TELNET STATISTICS (weekly)