MELVYL INSPEC DATABASES TELNET STATISTICS
Time period: 02/01/02 through 02/28/02
1.0 SUMMARY STATISTICS
_______________________
1.1 Total sessions:
____________________
Zero results may indicate no access to the database
Location Library Remote Total
________ _______ ______ _____
Berkeley 46 900 946
Davis 330 13 343
Irvine 206 0 206
Los Angeles 6 321 327
Riverside 10 13 23
San Diego 170 607 777
San Francisco 13 0 13
Santa Barbara 15 116 131
Santa Cruz 13 114 127
Lawrence Berkeley 0 194 194
Lawrence Livermore 0 67 67
Los Alamos 0 0 0
Other - UC 2 114 116
Other-Network UC n/a 1,383 1,383
_______ ______ _____
811 3,842 4,653
Relative use of INSPEC databases:
Number of Number of Number of
Sessions FIND commands Records Displayed
_________ _____________ _________________
INS (current) 2,954 7,019 71,768
INS90 680 1,144 9,956
INS85 421 734 4,449
INS80 314 551 3,210
INS69 284 593 3,786
Per hour usage:
Time Sessions Finds Records Displayed
__________ __________ __________ _________________
12-2 a.m. 109 227 1,898
2-4 a.m. 107 258 1,641
4-6 a.m. 101 254 2,082
6-8 a.m. 218 492 2,865
8-10 a.m. 547 1,178 13,669
10-12 a.m. 941 1,870 17,684
12-2 p.m. 712 1,544 18,638
2-4 p.m. 861 1,737 14,084
4-6 p.m. 583 1,221 10,296
6-8 p.m. 225 612 5,780
8-10 p.m. 140 378 2,274
10-12 p.m. 109 270 2,258
__________ __________ __________ _________________
Total: 4,653 10,041 93,169
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 93 2,092 2,185
Davis 922 20 942
Irvine 569 0 569
Los Angeles 5 703 708
Riverside 43 21 64
San Diego 316 1,285 1,601
San Francisco 25 0 25
Santa Barbara 19 220 239
Santa Cruz 29 267 296
Lawrence Berkeley 0 395 395
Lawrence Livermore 0 186 186
Los Alamos 0 0 0
Other - UC 3 250 253
Other-Network UC n/a 2,578 2,578
_______ ______ _____
2,024 8,017 10,041
1.3 Records displayed
______________________
Zero results may indicate no access to the database
Number of Records Displayed by location:
Location Library Remote Total
________ _______ ______ _____
Berkeley 513 17,480 17,993
Davis 23,564 142 23,706
Irvine 6,954 0 6,954
Los Angeles 28 6,522 6,550
Riverside 235 112 347
San Diego 2,769 10,676 13,445
San Francisco 102 0 102
Santa Barbara 270 1,663 1,933
Santa Cruz 38 2,346 2,384
Lawrence Berkeley 0 3,331 3,331
Lawrence Livermore 0 1,328 1,328
Los Alamos 0 0 0
Other - UC 8 1,963 1,971
Other-Network UC n/a 13,125 13,125
_______ ______ _____
34,481 58,688 93,169
1.4 Response time
__________________
Search response time from receipt of command at
DLA until transmission of response:
Average in seconds 0.9
Standard deviation in seconds 3.4
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) 8:03
Average session length (minutes:seconds) 12:54
Longest session recorded (minutes:seconds) 486:54
Average number of searches completed per session 2.1
Retrievals per search - median 6.0
Retrievals per search - average 331.1
Retrievals per search - standard deviation 5615.5
Percent of searches completed with 0 results 26.2%
Percent of searches entered that are long 5.8%
Percent of long searches completed
(includes partial results) 77.6%
Commands entered, by type, excluding errors:
Total Percentage
__________ __________
FIND 9,077 30.7%
DISPLAY (excluding automatic displays) 10,764 36.5%
BROWSE 10 0.0%
SELECT 0 0.0%
HELP 135 0.5%
EXPLAIN 266 0.9%
SET/RESET 2,622 8.9%
SHOW 56 0.2%
ADD ON (AND, OR, AND NOT) 964 3.3%
LOGON or LOGOFF 4,218 14.3%
COMMENT 0 0.0%
SAVE 269 0.9%
USE 4 0.0%
OTHER 1,149 3.9%
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 4,736 46.5% 1,054 22.3% 15 76.5 339.9
TITLE WORD 1,891 18.6% 861 45.5% 5 208.8 1232.5
EXACT TITLE 73 0.7% 52 71.2% 1 29.8 86.5
JOURNAL 334 3.3% 126 37.7% 6 1234.3 6172.1
EXACT JOURNAL 125 1.2% 74 59.2% 101 841.7 2936.9
SUBJECT 362 3.6% 114 31.5% 46 793.9 3477.5
EXACT SUBJECT 32 0.3% 2 6.3% 81 1871.2 2443.6
THESAURUS 0 0.0% 0 0.0% 0 0.0 0.0
EXACT THESAURUS 10 0.1% 1 10.0% 846 6687.4 7468.5
KEYWORD 1,822 17.9% 326 17.9% 26 1196.3 14015.1
SUBFILE 1 0.0% 0 0.0% 59 59.0 0.0
FORM 20 0.2% 2 10.0% 40 140.2 243.6
DATE 236 2.3% 59 25.0% 11 181.9 504.0
ADDED 1 0.0% 0 0.0% 5 5.0 0.0
ARTICLE 0 0.0% 0 0.0% 0 0.0 0.0
AUTHOR AFFIL. 74 0.7% 28 37.8% 33 193.7 573.4
CONFERENCE 12 0.1% 5 41.7% 389 398.0 382.8
LANGUAGE 0 0.0% 0 0.0% 0 0.0 0.0
CHEMICAL NAME 39 0.4% 10 25.6% 69 725.2 2054.0
ISSN 7 0.1% 7 100% 0 0.0 0.0
ISBN 3 0.0% 2 66.7% 110 110.0 0.0
ID NUMBER 0 0.0% 0 0.0% 0 0.0 0.0
PERIODICAL 370 3.6% 48 13.0% 5 77.9 783.4
EXACT PE 22 0.2% 0 0.0% 5 16.8 25.2
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 6 0.1% 1 16.7% 29 37.0 21.6
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 1,190 13.3% 395 33.2% 5 74.9 448.2
Single 7,766 86.7% 1,968 25.3% 19 495.7 7306.1
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 10 100% 3 30.0% 1 1.1 0.4
EXACT THESAURUS 0 0.0% 0 0.0% 0 0.0 0.0
DISPLAY commands, by type, excluding automatic displays:
REVIEW 3.5%
SHORT 80.9%
LONG 4.1%
TAGS 0.0%
FIELDS 4.5%
BROWSE REVIEW 0.0%
BROWSE LONG 0.0%
PERIODICALS 5.9%
COMMENTS 0.0%
Other 1.0%
2.2 Error, EXPLAIN and HELP statistics
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Percent of commands that contained errors 7.8%
Ten most frequent errors:
1. NS command - no next screen 48.7%
2. First word of command is invalid 25.3%
3. FIND command with invalid index name 6.3%
4. DISPLAY command contains invalid word 2.7%
5. Invalid SET DB INS command issued 2.1%
6. PS command - no previous screen 1.5%
7. Search term missing from search command 1.4%
8. DISPLAY command - no FIND results 1.2%
9. Valid command at an inappropriate time 1.0%
10. DISPLAY command-record numbers too large 0.8%
11. All others 9.0%
Ten most frequent EXPLAIN requests:
1. INSPEC DATABASES 14.7%
2. FIND (INSPEC DBS) 13.5%
3. GUIDE (INSPEC DBS) 13.2%
4. INSPEC BACKFILES 8.6%
5. DATABASES 4.9%
6. INDEXES (INSPEC DBS) 3.4%
7. DISPLAY (INS/PSY DBS) 3.4%
8. Unrecognized term 3.4%
9. MAIL 3.0%
10. 1752 3.0%
11. All others 28.9%
Ten most frequent HELP situations:
1. Help requested from SET DB command 28.7%
2. First word of command is invalid 12.5%
3. NS command - no next screen 8.0%
4. DISPLAY command-first of >1 screen 7.0%
5. FIND command with zero results 5.7%
6. FIND command with invalid index name 5.2%
7. FIND command retrieves >1 book 3.7%
8. DISPLAY command - last of >1 screen 3.5%
9. DISPLAY command-complete in one screen 2.7%
10. DISPLAY command - middle of >1 screen 2.5%
11. All others 20.4%
Ten most frequent SHOW requests:
1. HISTORY 58.9%
2. MAIL STATUS 16.1%
3. SEARCH 8.9%
4. SYSTEM NEWS 3.6%
5. INSPEC NEWS 1.8%
6. INSPEC LOADING STATISTICS 1.8%
7. GLOSSARY 1.8%
8. SYSTEM1 NEWS 1.8%
9. MAIL SETTINGS 1.8%
10. DLA BULLETIN 1.8%
11. All others 1.8%
INSmm/dd ins MELVYL INSPEC DATABASES TELNET STATISTICS (weekly)