MELVYL INSPEC DATABASES TELNET STATISTICS
Time period: 01/05/02 through 01/11/02
1.0 SUMMARY STATISTICS
_______________________
1.1 Total sessions:
____________________
Zero results may indicate no access to the database
Location Library Remote Total
________ _______ ______ _____
Berkeley 2 213 215
Davis 161 4 165
Irvine 170 0 170
Los Angeles 0 110 110
Riverside 3 11 14
San Diego 29 166 195
San Francisco 5 0 5
Santa Barbara 2 27 29
Santa Cruz 0 14 14
Lawrence Berkeley 0 55 55
Lawrence Livermore 0 47 47
Los Alamos 0 0 0
Other - UC 1 13 14
Other-Network UC n/a 404 404
_______ ______ _____
373 1,064 1,437
Relative use of INSPEC databases:
Number of Number of Number of
Sessions FIND commands Records Displayed
_________ _____________ _________________
INS (current) 831 1,832 16,852
INS90 237 439 3,040
INS85 158 239 1,411
INS80 103 166 581
INS69 108 227 1,673
Per hour usage:
Time Sessions Finds Records Displayed
__________ __________ __________ _________________
12-2 a.m. 30 65 373
2-4 a.m. 35 79 383
4-6 a.m. 25 76 386
6-8 a.m. 40 104 297
8-10 a.m. 151 313 2,533
10-12 a.m. 266 474 3,689
12-2 p.m. 186 393 2,287
2-4 p.m. 301 659 5,480
4-6 p.m. 223 433 3,672
6-8 p.m. 84 147 2,494
8-10 p.m. 58 106 1,415
10-12 p.m. 38 54 548
__________ __________ __________ _________________
Total: 1,437 2,903 23,557
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 4 490 494
Davis 326 12 338
Irvine 397 0 397
Los Angeles 0 203 203
Riverside 5 29 34
San Diego 69 354 423
San Francisco 4 0 4
Santa Barbara 2 39 41
Santa Cruz 0 26 26
Lawrence Berkeley 0 120 120
Lawrence Livermore 0 106 106
Los Alamos 0 0 0
Other - UC 0 29 29
Other-Network UC n/a 688 688
_______ ______ _____
807 2,096 2,903
1.3 Records displayed
______________________
Zero results may indicate no access to the database
Number of Records Displayed by location:
Location Library Remote Total
________ _______ ______ _____
Berkeley 61 4,885 4,946
Davis 2,171 25 2,196
Irvine 5,483 0 5,483
Los Angeles 0 2,206 2,206
Riverside 23 142 165
San Diego 243 3,240 3,483
San Francisco 6 0 6
Santa Barbara 4 518 522
Santa Cruz 0 477 477
Lawrence Berkeley 0 824 824
Lawrence Livermore 0 635 635
Los Alamos 0 0 0
Other - UC 0 304 304
Other-Network UC n/a 2,310 2,310
_______ ______ _____
7,991 15,566 23,557
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 2.3
Display response time from receipt of command at
DLA until transmission of a complete screen:
Average in seconds 0.1
Standard deviation in seconds 0.2
2.0 INSPEC Databases Detailed Statistics
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Median session length (minutes:seconds) 10:51
Average session length (minutes:seconds) 13:50
Longest session recorded (minutes:seconds) 507:55
Average number of searches completed per session 2.0
Retrievals per search - median 5.0
Retrievals per search - average 170.2
Retrievals per search - standard deviation 1138.5
Percent of searches completed with 0 results 27.9%
Percent of searches entered that are long 6.8%
Percent of long searches completed
(includes partial results) 80.7%
Commands entered, by type, excluding errors:
Total Percentage
__________ __________
FIND 2,697 32.4%
DISPLAY (excluding automatic displays) 2,989 35.9%
BROWSE 0 0.0%
SELECT 0 0.0%
HELP 53 0.6%
EXPLAIN 60 0.7%
SET/RESET 905 10.9%
SHOW 13 0.2%
ADD ON (AND, OR, AND NOT) 206 2.5%
LOGON or LOGOFF 1,093 13.1%
COMMENT 0 0.0%
SAVE 13 0.2%
USE 0 0.0%
OTHER 303 3.6%
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 1,400 46.7% 350 25.0% 14 84.7 341.6
TITLE WORD 585 19.5% 238 40.7% 5 115.0 789.0
EXACT TITLE 39 1.3% 22 56.4% 1 18.8 41.8
JOURNAL 64 2.1% 25 39.1% 14 1059.1 4093.1
EXACT JOURNAL 25 0.8% 10 40.0% 50 1241.3 3275.5
SUBJECT 127 4.2% 24 18.9% 34 355.5 1320.3
EXACT SUBJECT 1 0.0% 1 100% 0 0.0 0.0
THESAURUS 3 0.1% 0 0.0% 82 906.7 1428.4
EXACT THESAURUS 0 0.0% 0 0.0% 0 0.0 0.0
KEYWORD 556 18.5% 118 21.2% 18 497.4 2043.0
SUBFILE 0 0.0% 0 0.0% 0 0.0 0.0
FORM 14 0.5% 1 7.1% 20 55.6 75.2
DATE 55 1.8% 9 16.4% 9 126.6 334.9
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. 38 1.3% 13 34.2% 18 1158.7 3974.1
CONFERENCE 11 0.4% 6 54.5% 801 1869.6 2570.7
LANGUAGE 0 0.0% 0 0.0% 0 0.0 0.0
CHEMICAL NAME 11 0.4% 5 45.5% 4 63.7 146.7
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 62 2.1% 10 16.1% 5 18.6 28.8
EXACT PE 6 0.2% 0 0.0% 14 102.3 223.4
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 326 12.2% 98 30.1% 5 40.8 158.7
Single 2,337 87.8% 635 27.2% 17 278.8 1465.2
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 0 0.0% 0 0.0% 0.0 0.0 0.0
EXACT THESAURUS 0 0.0% 0 0.0% 0.0 0.0 0.0
DISPLAY commands, by type, excluding automatic displays:
REVIEW 4.1%
SHORT 85.2%
LONG 2.5%
TAGS 0.4%
FIELDS 4.3%
BROWSE REVIEW 0.0%
BROWSE LONG 0.0%
PERIODICALS 2.7%
COMMENTS 0.0%
Other 0.9%
2.2 Error, EXPLAIN and HELP statistics
_______________________________________
Percent of commands that contained errors 7.6%
Ten most frequent errors:
1. NS command - no next screen 52.3%
2. First word of command is invalid 24.5%
3. FIND command with invalid index name 7.0%
4. DISPLAY command contains invalid word 2.3%
5. DISPLAY command - no FIND results 1.9%
6. Search term missing from search command 1.8%
7. PS command - no previous screen 1.2%
8. 1281 1.0%
9. NS of SHOW/EXP command-no next screen 0.9%
10. Valid command at an inappropriate time 0.7%
11. All others 6.3%
Ten most frequent EXPLAIN requests:
1. INSPEC DATABASES 16.7%
2. FIND (INSPEC DBS) 16.7%
3. GUIDE (INSPEC DBS) 11.7%
4. LOCATE (INS/PSY DBS) 6.7%
5. INSPEC BACKFILES 6.7%
6. DISPLAY (INS/PSY DBS) 5.0%
7. DATABASES 5.0%
8. MAIL 3.3%
9. INDEXES (INSPEC DBS) 3.3%
10. Unrecognized term 3.3%
11. All others 21.7%
Ten most frequent HELP situations:
1. Help requested from SET DB command 34.5%
2. First word of command is invalid 11.5%
3. NS command - no next screen 9.7%
4. FIND command with invalid index name 7.1%
5. DISPLAY command-first of >1 screen 6.2%
6. FIND command with zero results 4.4%
7. DISPLAY command - middle of >1 screen 4.4%
8. DISPLAY command-complete in one screen 3.5%
9. DISPLAY command - last of >1 screen 3.5%
10. 16 2.7%
11. All others 12.4%
Ten most frequent SHOW requests:
1. HISTORY 84.6%
2. INSPEC LOADING STATISTICS 7.7%
3. SEARCH 7.7%
11. All others 0.0%
INSmm/dd ins MELVYL INSPEC DATABASES TELNET STATISTICS (weekly)