MELVYL INSPEC DATABASES TELNET STATISTICS
Time period: 05/05/01 through 05/11/01
1.0 SUMMARY STATISTICS
_______________________
1.1 Total sessions:
____________________
Zero results may indicate no access to the database
Location Library Remote Total
________ _______ ______ _____
Berkeley 8 354 362
Davis 54 6 60
Irvine 98 0 98
Los Angeles 0 174 174
Riverside 4 3 7
San Diego 56 127 183
San Francisco 25 0 25
Santa Barbara 0 62 62
Santa Cruz 7 24 31
Lawrence Berkeley 0 40 40
Lawrence Livermore 0 33 33
Los Alamos 0 0 0
Other - UC 0 155 155
Other-Network UC n/a 437 437
_______ ______ _____
252 1,415 1,667
Relative use of INSPEC databases:
Number of Number of Number of
Sessions FIND commands Records Displayed
_________ _____________ _________________
INS (current) 1,032 2,512 20,669
INS90 230 407 2,294
INS85 166 319 2,102
INS80 135 223 1,188
INS69 104 195 1,536
Per hour usage:
Time Sessions Finds Records Displayed
__________ __________ __________ _________________
12-2 a.m. 46 101 779
2-4 a.m. 51 105 414
4-6 a.m. 36 87 592
6-8 a.m. 43 77 652
8-10 a.m. 177 410 2,566
10-12 a.m. 282 550 3,971
12-2 p.m. 272 552 5,379
2-4 p.m. 298 669 5,707
4-6 p.m. 239 481 3,146
6-8 p.m. 96 219 1,576
8-10 p.m. 80 246 1,970
10-12 p.m. 47 159 1,037
__________ __________ __________ _________________
Total: 1,667 3,656 27,789
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 18 801 819
Davis 134 17 151
Irvine 386 0 386
Los Angeles 0 320 320
Riverside 8 2 10
San Diego 137 228 365
San Francisco 114 0 114
Santa Barbara 0 112 112
Santa Cruz 29 50 79
Lawrence Berkeley 0 87 87
Lawrence Livermore 0 112 112
Los Alamos 0 0 0
Other - UC 0 262 262
Other-Network UC n/a 839 839
_______ ______ _____
826 2,830 3,656
1.3 Records displayed
______________________
Zero results may indicate no access to the database
Number of Records Displayed by location:
Location Library Remote Total
________ _______ ______ _____
Berkeley 457 6,078 6,535
Davis 1,843 133 1,976
Irvine 2,463 0 2,463
Los Angeles 0 4,094 4,094
Riverside 23 0 23
San Diego 696 1,840 2,536
San Francisco 619 0 619
Santa Barbara 0 1,086 1,086
Santa Cruz 83 265 348
Lawrence Berkeley 0 941 941
Lawrence Livermore 0 615 615
Los Alamos 0 0 0
Other - UC 0 1,332 1,332
Other-Network UC n/a 5,221 5,221
_______ ______ _____
6,184 21,605 27,789
1.4 Response time
__________________
Search response time from receipt of command at
DLA until transmission of response:
Average in seconds 1.0
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
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Median session length (minutes:seconds) 8:19
Average session length (minutes:seconds) 12:01
Longest session recorded (minutes:seconds) 243:57
Average number of searches completed per session 2.2
Retrievals per search - median 5.0
Retrievals per search - average 875.2
Retrievals per search - standard deviation 17686
Percent of searches completed with 0 results 26.7%
Percent of searches entered that are long 4.0%
Percent of long searches completed
(includes partial results) 76.6%
Commands entered, by type, excluding errors:
Total Percentage
__________ __________
FIND 3,370 30.3%
DISPLAY (excluding automatic displays) 4,109 36.9%
BROWSE 9 0.1%
SELECT 2 0.0%
HELP 89 0.8%
EXPLAIN 140 1.3%
SET/RESET 937 8.4%
SHOW 39 0.4%
ADD ON (AND, OR, AND NOT) 286 2.6%
LOGON or LOGOFF 1,543 13.9%
COMMENT 0 0.0%
SAVE 194 1.7%
USE 8 0.1%
OTHER 413 3.7%
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 1,535 40.4% 367 23.9% 13 70.1 288.6
TITLE WORD 686 18.1% 284 41.4% 6 72.2 423.3
EXACT TITLE 248 6.5% 108 43.5% 1 3.2 13.7
JOURNAL 89 2.3% 37 41.6% 112 1266.8 4206.9
EXACT JOURNAL 77 2.0% 29 37.7% 4 202.7 826.3
SUBJECT 49 1.3% 16 32.7% 35 1108.2 4003.9
EXACT SUBJECT 11 0.3% 2 18.2% 3 1803.9 5403.8
THESAURUS 4 0.1% 0 0.0% 17 2899.3 5773.8
EXACT THESAURUS 2 0.1% 0 0.0% 1,957 1957.0 2762.0
KEYWORD 699 18.4% 120 17.2% 28 3000.8 33222.9
SUBFILE 8 0.2% 0 0.0% 16 30.5 35.4
FORM 24 0.6% 11 45.8% 27 647.7 2182.3
DATE 49 1.3% 14 28.6% 8 21.2 34.9
ADDED 11 0.3% 6 54.5% 18 20.8 7.8
ARTICLE 0 0.0% 0 0.0% 0 0.0 0.0
AUTHOR AFFIL. 84 2.2% 11 13.1% 14 35.4 120.8
CONFERENCE 29 0.8% 14 48.3% 222 902.9 1520.7
LANGUAGE 0 0.0% 0 0.0% 0 0.0 0.0
CHEMICAL NAME 15 0.4% 4 26.7% 10 68.8 188.9
ISSN 0 0.0% 0 0.0% 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 146 3.8% 31 21.2% 5 66.0 321.0
EXACT PE 28 0.7% 2 7.1% 6 10.7 14.3
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 2 0.1% 1 50.0% 7 7.0 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 443 13.3% 150 33.9% 5 84.2 817.4
Single 2,896 86.7% 749 25.9% 15 921.1 17313.2
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 9 100% 1 11.1% 1 6.3 9.7
EXACT THESAURUS 0 0.0% 0 0.0% 0 0.0 0.0
DISPLAY commands, by type, excluding automatic displays:
REVIEW 2.5%
SHORT 82.6%
LONG 2.2%
TAGS 2.7%
FIELDS 3.3%
BROWSE REVIEW 0.2%
BROWSE LONG 0.0%
PERIODICALS 5.5%
COMMENTS 0.0%
Other 1.1%
2.2 Error, EXPLAIN and HELP statistics
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Percent of commands that contained errors 9.1%
Ten most frequent errors:
1. NS command - no next screen 42.9%
2. First word of command is invalid 28.7%
3. FIND command with invalid index name 3.8%
4. DISPLAY command contains invalid word 3.2%
5. Max. # of ports to a Z39 db are in use 3.0%
6. DISPLAY command - no FIND results 1.9%
7. PS command - no previous screen 1.5%
8. Search term missing from search command 1.4%
9. DISPLAY command-record numbers too large 1.3%
10. Valid command at an inappropriate time 1.3%
11. All others 10.8%
Ten most frequent EXPLAIN requests:
1. FIND (INSPEC DBS) 17.9%
2. INSPEC DATABASES 10.7%
3. INSPEC BACKFILES 8.6%
4. Unrecognized term 7.1%
5. GUIDE (INSPEC DBS) 6.4%
6. INDEXES (INSPEC DBS) 6.4%
7. 1752 6.4%
8. MAIL 5.0%
9. LOCATE (INS/PSY DBS) 5.0%
10. 1615 2.9%
11. All others 23.6%
Ten most frequent HELP situations:
1. Help requested from SET DB command 19.2%
2. First word of command is invalid 17.9%
3. FIND command with zero results 6.1%
4. DISPLAY command - last of >1 screen 5.7%
5. DISPLAY command-first of >1 screen 4.8%
6. DISPLAY command-complete in one screen 4.4%
7. DISPLAY command - middle of >1 screen 3.9%
8. FIND command with invalid index name 3.5%
9. NS command - no next screen 3.1%
10. FIND command retrieves >1 book 2.6%
11. All others 28.8%
Ten most frequent SHOW requests:
1. HISTORY 69.4%
2. SEARCH 11.1%
3. SETTINGS (INS/PSY DBS) 5.6%
4. INSPEC NEWS 5.6%
5. MAIL STATUS 5.6%
6. MAIL SETTINGS 2.8%
11. All others 0.0%
INSmm/dd ins MELVYL INSPEC DATABASES TELNET STATISTICS (weekly)