MELVYL INSPEC DATABASES TELNET STATISTICS
Time period: 01/13/01 through 01/19/01
1.0 SUMMARY STATISTICS
_______________________
1.1 Total sessions:
____________________
Zero results may indicate no access to the database
Location Library Remote Total
________ _______ ______ _____
Berkeley 10 438 448
Davis 73 4 77
Irvine 129 0 129
Los Angeles 15 257 272
Riverside 4 15 19
San Diego 69 234 303
San Francisco 37 0 37
Santa Barbara 17 86 103
Santa Cruz 3 38 41
Lawrence Berkeley 0 63 63
Lawrence Livermore 0 19 19
Los Alamos 0 0 0
Other - UC 0 50 50
Other-Network UC n/a 494 494
_______ ______ _____
357 1,698 2,055
Relative use of INSPEC databases:
Number of Number of Number of
Sessions FIND commands Records Displayed
_________ _____________ _________________
INS (current) 1,169 2,805 22,061
INS90 323 572 3,461
INS85 223 362 2,013
INS80 180 323 1,438
INS69 160 339 2,223
Per hour usage:
Time Sessions Finds Records Displayed
__________ __________ __________ _________________
12-2 a.m. 40 95 1,149
2-4 a.m. 40 103 1,031
4-6 a.m. 17 42 144
6-8 a.m. 100 211 945
8-10 a.m. 186 432 2,743
10-12 a.m. 376 744 5,151
12-2 p.m. 307 691 4,520
2-4 p.m. 441 973 8,126
4-6 p.m. 278 583 4,071
6-8 p.m. 164 299 1,600
8-10 p.m. 59 103 1,194
10-12 p.m. 47 125 522
__________ __________ __________ _________________
Total: 2,055 4,401 31,196
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 16 896 912
Davis 157 9 166
Irvine 311 0 311
Los Angeles 32 601 633
Riverside 2 47 49
San Diego 252 491 743
San Francisco 134 0 134
Santa Barbara 26 204 230
Santa Cruz 7 71 78
Lawrence Berkeley 0 135 135
Lawrence Livermore 0 57 57
Los Alamos 0 0 0
Other - UC 0 116 116
Other-Network UC n/a 837 837
_______ ______ _____
937 3,464 4,401
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 6,027 6,088
Davis 1,098 8 1,106
Irvine 2,675 0 2,675
Los Angeles 590 5,537 6,127
Riverside 3 247 250
San Diego 1,064 2,867 3,931
San Francisco 901 0 901
Santa Barbara 238 2,535 2,773
Santa Cruz 75 380 455
Lawrence Berkeley 0 765 765
Lawrence Livermore 0 948 948
Los Alamos 0 0 0
Other - UC 0 850 850
Other-Network UC n/a 4,327 4,327
_______ ______ _____
6,705 24,491 31,196
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 4.1
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) 6:28
Average session length (minutes:seconds) 11:45
Longest session recorded (minutes:seconds) 297:09
Average number of searches completed per session 2.1
Retrievals per search - median 5.0
Retrievals per search - average 1011.8
Retrievals per search - standard deviation 16877
Percent of searches completed with 0 results 28.8%
Percent of searches entered that are long 5.3%
Percent of long searches completed
(includes partial results) 80.6%
Commands entered, by type, excluding errors:
Total Percentage
__________ __________
FIND 3,997 31.4%
DISPLAY (excluding automatic displays) 4,407 34.7%
BROWSE 3 0.0%
SELECT 0 0.0%
HELP 94 0.7%
EXPLAIN 160 1.3%
SET/RESET 1,273 10.0%
SHOW 27 0.2%
ADD ON (AND, OR, AND NOT) 404 3.2%
LOGON or LOGOFF 1,625 12.8%
COMMENT 0 0.0%
SAVE 232 1.8%
USE 1 0.0%
OTHER 496 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 1,896 42.4% 499 26.3% 17 99.6 532.1
TITLE WORD 959 21.5% 418 43.6% 5 94.6 576.8
EXACT TITLE 13 0.3% 10 76.9% 42 29.0 24.3
JOURNAL 104 2.3% 42 40.4% 186 2878.8 10243.6
EXACT JOURNAL 37 0.8% 11 29.7% 29 834.0 1565.1
SUBJECT 145 3.2% 49 33.8% 14 348.2 1524.6
EXACT SUBJECT 22 0.5% 2 9.1% 144 1689.5 3395.6
THESAURUS 3 0.1% 0 0.0% 22 3664.7 6317.1
EXACT THESAURUS 0 0.0% 0 0.0% 0 0.0 0.0
KEYWORD 887 19.9% 176 19.8% 20 3304.3 29975.2
SUBFILE 0 0.0% 0 0.0% 0 0.0 0.0
FORM 26 0.6% 5 19.2% 7 13.9 15.9
DATE 74 1.7% 23 31.1% 2,370 6325.5 7288.7
ADDED 11 0.2% 4 36.4% 21 26.7 25.1
ARTICLE 0 0.0% 0 0.0% 0 0.0 0.0
AUTHOR AFFIL. 116 2.6% 19 16.4% 10 168.8 812.5
CONFERENCE 11 0.2% 2 18.2% 86 11312.9 22293.6
LANGUAGE 7 0.2% 1 14.3% 15 26.7 34.6
CHEMICAL NAME 15 0.3% 2 13.3% 4 105.2 214.0
ISSN 5 0.1% 0 0.0% 393 439.6 173.7
ISBN 1 0.0% 1 100% 0 0.0 0.0
ID NUMBER 0 0.0% 0 0.0% 0 0.0 0.0
PERIODICAL 120 2.7% 33 27.5% 4 22.7 56.2
EXACT PE 12 0.3% 2 16.7% 4 18.5 33.9
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 3 0.1% 1 33.3% 44 43.5 41.7
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 499 12.6% 184 36.9% 8 1080.6 3765.8
Single 3,457 87.4% 930 26.9% 18 1022.7 16060.2
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 3 100% 1 33.3% 3 3.0 2.8
EXACT THESAURUS 0 0.0% 0 0.0% 0 0.0 0.0
DISPLAY commands, by type, excluding automatic displays:
REVIEW 3.2%
SHORT 86.8%
LONG 1.6%
TAGS 0.2%
FIELDS 3.6%
BROWSE REVIEW 0.0%
BROWSE LONG 0.0%
PERIODICALS 3.5%
COMMENTS 0.0%
Other 1.0%
2.2 Error, EXPLAIN and HELP statistics
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Percent of commands that contained errors 8.9%
Ten most frequent errors:
1. NS command - no next screen 43.0%
2. First word of command is invalid 25.4%
3. FIND command with invalid index name 5.3%
4. Max. # of ports to a Z39 db are in use 4.2%
5. DISPLAY command contains invalid word 3.3%
6. DISPLAY command - no FIND results 2.2%
7. Search term missing from search command 1.6%
8. PS command - no previous screen 1.2%
9. SET command with invalid setting 1.1%
10. Invalid SET DB INS command issued 1.1%
11. All others 11.6%
Ten most frequent EXPLAIN requests:
1. INSPEC DATABASES 16.9%
2. INSPEC BACKFILES 12.5%
3. FIND (INSPEC DBS) 10.6%
4. GUIDE (INSPEC DBS) 10.0%
5. INDEXES (INSPEC DBS) 5.0%
6. Unrecognized term 5.0%
7. DATABASES 5.0%
8. 1752 4.4%
9. COMMANDS (INS/PSY/ABI/BIO DBS) 3.1%
10. DISPLAY (INS/PSY DBS) 3.1%
11. All others 24.4%
Ten most frequent HELP situations:
1. Help requested from SET DB command 29.5%
2. First word of command is invalid 12.2%
3. DISPLAY command - middle of >1 screen 6.7%
4. NS command - no next screen 5.5%
5. FIND command with zero results 5.1%
6. DISPLAY command - last of >1 screen 4.3%
7. NS of SHOW/EXP command-no next screen 3.5%
8. DISPLAY command-first of >1 screen 2.8%
9. 850 2.8%
10. FIND command with invalid index name 2.4%
11. All others 25.2%
Ten most frequent SHOW requests:
1. HISTORY 63.0%
2. INSPEC NEWS 11.1%
3. MAIL STATUS 11.1%
4. INSPEC LOADING STATISTICS 3.7%
5. GLOSSARY 3.7%
6. SYSTEM NEWS 3.7%
7. SEARCH 3.7%
11. All others 0.0%
INSmm/dd ins MELVYL INSPEC DATABASES TELNET STATISTICS (weekly)