MELVYL INSPEC DATABASES TELNET STATISTICS
Time period: 04/06/02 through 04/12/02
1.0 SUMMARY STATISTICS
_______________________
1.1 Total sessions:
____________________
Zero results may indicate no access to the database
Location Library Remote Total
________ _______ ______ _____
Berkeley 3 234 237
Davis 48 2 50
Irvine 47 0 47
Los Angeles 0 73 73
Riverside 0 7 7
San Diego 33 90 123
San Francisco 0 0 0
Santa Barbara 1 8 9
Santa Cruz 4 22 26
Lawrence Berkeley 0 36 36
Lawrence Livermore 0 21 21
Los Alamos 0 0 0
Other - UC 1 12 13
Other-Network UC n/a 364 364
_______ ______ _____
137 869 1,006
Relative use of INSPEC databases:
Number of Number of Number of
Sessions FIND commands Records Displayed
_________ _____________ _________________
INS (current) 663 1,522 12,645
INS90 118 251 827
INS85 74 111 710
INS80 68 107 518
INS69 83 173 1,568
Per hour usage:
Time Sessions Finds Records Displayed
__________ __________ __________ _________________
12-2 a.m. 17 39 409
2-4 a.m. 31 66 448
4-6 a.m. 21 37 299
6-8 a.m. 42 125 903
8-10 a.m. 125 233 1,651
10-12 a.m. 208 472 2,804
12-2 p.m. 146 330 1,448
2-4 p.m. 165 329 2,979
4-6 p.m. 140 302 3,221
6-8 p.m. 52 114 761
8-10 p.m. 31 64 1,095
10-12 p.m. 28 53 250
__________ __________ __________ _________________
Total: 1,006 2,164 16,268
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 6 524 530
Davis 116 2 118
Irvine 118 0 118
Los Angeles 0 148 148
Riverside 0 8 8
San Diego 57 215 272
San Francisco 0 0 0
Santa Barbara 1 19 20
Santa Cruz 13 45 58
Lawrence Berkeley 0 77 77
Lawrence Livermore 0 124 124
Los Alamos 0 0 0
Other - UC 0 44 44
Other-Network UC n/a 647 647
_______ ______ _____
311 1,853 2,164
1.3 Records displayed
______________________
Zero results may indicate no access to the database
Number of Records Displayed by location:
Location Library Remote Total
________ _______ ______ _____
Berkeley 14 3,975 3,989
Davis 1,019 6 1,025
Irvine 1,975 0 1,975
Los Angeles 0 1,494 1,494
Riverside 0 4 4
San Diego 240 1,251 1,491
San Francisco 0 0 0
Santa Barbara 3 325 328
Santa Cruz 22 228 250
Lawrence Berkeley 0 916 916
Lawrence Livermore 0 310 310
Los Alamos 0 0 0
Other - UC 14 529 543
Other-Network UC n/a 3,943 3,943
_______ ______ _____
3,287 12,981 16,268
1.4 Response time
__________________
Search response time from receipt of command at
DLA until transmission of response:
Average in seconds 0.8
Standard deviation in seconds 3.9
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) 9:01
Average session length (minutes:seconds) 14:08
Longest session recorded (minutes:seconds) 381:42
Average number of searches completed per session 2.1
Retrievals per search - median 5.0
Retrievals per search - average 583.3
Retrievals per search - standard deviation 8337.4
Percent of searches completed with 0 results 28.7%
Percent of searches entered that are long 4.9%
Percent of long searches completed
(includes partial results) 83.2%
Commands entered, by type, excluding errors:
Total Percentage
__________ __________
FIND 1,937 30.8%
DISPLAY (excluding automatic displays) 2,255 35.8%
BROWSE 2 0.0%
SELECT 0 0.0%
HELP 63 1.0%
EXPLAIN 75 1.2%
SET/RESET 620 9.8%
SHOW 15 0.2%
ADD ON (AND, OR, AND NOT) 227 3.6%
LOGON or LOGOFF 834 13.2%
COMMENT 0 0.0%
SAVE 31 0.5%
USE 0 0.0%
OTHER 238 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 906 41.2% 226 24.9% 15 534.1 12144.8
TITLE WORD 400 18.2% 217 54.2% 5 68.3 187.3
EXACT TITLE 21 1.0% 15 71.4% 6 33.2 46.6
JOURNAL 50 2.3% 13 26.0% 295 7936.0 23498.6
EXACT JOURNAL 30 1.4% 16 53.3% 79 1235.8 2171.5
SUBJECT 80 3.6% 34 42.5% 18 318.7 566.3
EXACT SUBJECT 5 0.2% 0 0.0% 3,798 3965.8 2489.1
THESAURUS 26 1.2% 0 0.0% 52 2196.9 8109.3
EXACT THESAURUS 0 0.0% 0 0.0% 0 0.0 0.0
KEYWORD 436 19.8% 83 19.0% 18 2189.1 18748.5
SUBFILE 1 0.0% 0 0.0% 146 146.0 0.0
FORM 29 1.3% 1 3.4% 52 218.6 452.1
DATE 65 3.0% 19 29.2% 18 145.8 466.8
ADDED 0 0.0% 0 0.0% 0 0.0 0.0
ARTICLE 0 0.0% 0 0.0% 0 0.0 0.0
AUTHOR AFFIL. 26 1.2% 9 34.6% 34 69.4 116.4
CONFERENCE 2 0.1% 0 0.0% 270 269.5 125.2
LANGUAGE 0 0.0% 0 0.0% 0 0.0 0.0
CHEMICAL NAME 0 0.0% 0 0.0% 0 0.0 0.0
ISSN 1 0.0% 1 100% 0 0.0 0.0
ISBN 0 0.0% 0 0.0% 0 0.0 0.0
ID NUMBER 0 0.0% 0 0.0% 0 0.0 0.0
PERIODICAL 109 5.0% 18 16.5% 4 13.6 22.1
EXACT PE 10 0.5% 1 10.0% 16 47.9 106.8
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 1 0.0% 1 100% 0 0.0 0.0
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 267 13.9% 101 37.8% 8 2013.3 24574.7
Single 1,654 86.1% 450 27.2% 18 746.6 6360.3
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 1 50.0% 0 0.0% 1 1.0 0.0
EXACT THESAURUS 1 50.0% 0 0.0% 46 46.0 0.0
DISPLAY commands, by type, excluding automatic displays:
REVIEW 3.1%
SHORT 79.1%
LONG 3.1%
TAGS 0.4%
FIELDS 5.7%
BROWSE REVIEW 0.0%
BROWSE LONG 0.0%
PERIODICALS 7.7%
COMMENTS 0.0%
Other 0.9%
2.2 Error, EXPLAIN and HELP statistics
_______________________________________
Percent of commands that contained errors 8.0%
Ten most frequent errors:
1. NS command - no next screen 42.4%
2. First word of command is invalid 27.3%
3. FIND command with invalid index name 7.7%
4. DISPLAY command contains invalid word 2.7%
5. NS of SHOW/EXP command-no next screen 2.2%
6. DISPLAY command - no FIND results 1.8%
7. Valid command at an inappropriate time 1.6%
8. PS command - no previous screen 1.6%
9. Search term missing from search command 1.6%
10. Index invalid in current database 1.6%
11. All others 9.3%
Ten most frequent EXPLAIN requests:
1. GUIDE (INSPEC DBS) 14.7%
2. INSPEC DATABASES 13.3%
3. FIND (INSPEC DBS) 12.0%
4. INSPEC BACKFILES 9.3%
5. INDEXES (INSPEC DBS) 8.0%
6. LOCATE (INS/PSY DBS) 6.7%
7. MAIL 5.3%
8. COMMANDS (INS/PSY/ABI/BIO DBS) 4.0%
9. Unrecognized term 4.0%
10. I030 2.7%
11. All others 20.0%
Ten most frequent HELP situations:
1. Help requested from SET DB command 26.8%
2. FIND command retrieves >1 book 7.2%
3. DISPLAY command-first of >1 screen 7.2%
4. DISPLAY command - middle of >1 screen 7.2%
5. First word of command is invalid 6.5%
6. FIND command with invalid index name 6.5%
7. 3 HELP commands issued from same code 3.6%
8. DISPLAY command - last of >1 screen 3.6%
9. MAIL command entered w/o email address 3.6%
10. Valid command at an inappropriate time 2.9%
11. All others 24.6%
Ten most frequent SHOW requests:
1. HISTORY 66.7%
2. MAIL STATUS 20.0%
3. MAIL SETTINGS 6.7%
4. SEARCH 6.7%
11. All others 0.0%
INSmm/dd ins MELVYL INSPEC DATABASES TELNET STATISTICS (weekly)