MELVYL INSPEC DATABASES TELNET STATISTICS
Time period: 06/08/02 through 06/14/02
1.0 SUMMARY STATISTICS
_______________________
1.1 Total sessions:
____________________
Zero results may indicate no access to the database
Location Library Remote Total
________ _______ ______ _____
Berkeley 5 161 166
Davis 31 2 33
Irvine 35 0 35
Los Angeles 0 114 114
Riverside 0 3 3
San Diego 32 58 90
San Francisco 5 0 5
Santa Barbara 0 36 36
Santa Cruz 0 13 13
Lawrence Berkeley 0 13 13
Lawrence Livermore 0 5 5
Los Alamos 0 0 0
Other - UC 1 35 36
Other-Network UC n/a 169 169
_______ ______ _____
109 609 718
Relative use of INSPEC databases:
Number of Number of Number of
Sessions FIND commands Records Displayed
_________ _____________ _________________
INS (current) 418 966 9,478
INS90 104 174 1,105
INS85 70 93 1,086
INS80 56 80 424
INS69 70 145 730
Per hour usage:
Time Sessions Finds Records Displayed
__________ __________ __________ _________________
12-2 a.m. 25 58 512
2-4 a.m. 17 37 268
4-6 a.m. 16 33 273
6-8 a.m. 27 52 201
8-10 a.m. 82 159 1,412
10-12 a.m. 118 254 1,871
12-2 p.m. 96 156 1,241
2-4 p.m. 146 335 2,235
4-6 p.m. 99 189 2,099
6-8 p.m. 26 42 868
8-10 p.m. 36 71 412
10-12 p.m. 30 72 1,431
__________ __________ __________ _________________
Total: 718 1,458 12,823
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 8 364 372
Davis 90 2 92
Irvine 89 0 89
Los Angeles 0 187 187
Riverside 0 7 7
San Diego 74 133 207
San Francisco 9 0 9
Santa Barbara 0 58 58
Santa Cruz 0 34 34
Lawrence Berkeley 0 31 31
Lawrence Livermore 0 6 6
Los Alamos 0 0 0
Other - UC 6 63 69
Other-Network UC n/a 297 297
_______ ______ _____
276 1,182 1,458
1.3 Records displayed
______________________
Zero results may indicate no access to the database
Number of Records Displayed by location:
Location Library Remote Total
________ _______ ______ _____
Berkeley 70 2,584 2,654
Davis 428 18 446
Irvine 1,303 0 1,303
Los Angeles 0 3,220 3,220
Riverside 0 43 43
San Diego 1,042 1,185 2,227
San Francisco 6 0 6
Santa Barbara 0 307 307
Santa Cruz 0 331 331
Lawrence Berkeley 0 196 196
Lawrence Livermore 0 14 14
Los Alamos 0 0 0
Other - UC 6 385 391
Other-Network UC n/a 1,685 1,685
_______ ______ _____
2,855 9,968 12,823
1.4 Response time
__________________
Search response time from receipt of command at
DLA until transmission of response:
Average in seconds 0.7
Standard deviation in seconds 2.0
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) 8:17
Average session length (minutes:seconds) 12:08
Longest session recorded (minutes:seconds) 299:13
Average number of searches completed per session 2.0
Retrievals per search - median 5.0
Retrievals per search - average 372.3
Retrievals per search - standard deviation 3384.5
Percent of searches completed with 0 results 25.7%
Percent of searches entered that are long 6.4%
Percent of long searches completed
(includes partial results) 77.4%
Commands entered, by type, excluding errors:
Total Percentage
__________ __________
FIND 1,324 31.0%
DISPLAY (excluding automatic displays) 1,467 34.3%
BROWSE 0 0.0%
SELECT 0 0.0%
HELP 34 0.8%
EXPLAIN 43 1.0%
SET/RESET 395 9.2%
SHOW 12 0.3%
ADD ON (AND, OR, AND NOT) 134 3.1%
LOGON or LOGOFF 661 15.5%
COMMENT 0 0.0%
SAVE 37 0.9%
USE 0 0.0%
OTHER 168 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 618 42.0% 132 21.4% 14 51.2 154.2
TITLE WORD 227 15.4% 92 40.5% 4 746.3 6430.6
EXACT TITLE 13 0.9% 5 38.5% 1 1.4 0.5
JOURNAL 33 2.2% 8 24.2% 138 1047.6 2033.7
EXACT JOURNAL 39 2.7% 9 23.1% 7 609.0 1346.3
SUBJECT 64 4.4% 22 34.4% 35 4081.5 15827.1
EXACT SUBJECT 1 0.1% 0 0.0% 903 903.0 0.0
THESAURUS 0 0.0% 0 0.0% 0 0.0 0.0
EXACT THESAURUS 0 0.0% 0 0.0% 0 0.0 0.0
KEYWORD 367 25.0% 86 23.4% 26 783.5 4083.5
SUBFILE 0 0.0% 0 0.0% 0 0.0 0.0
FORM 9 0.6% 1 11.1% 11 27.0 39.0
DATE 15 1.0% 2 13.3% 28 561.6 1004.7
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. 11 0.7% 2 18.2% 249 2152.3 3404.4
CONFERENCE 3 0.2% 1 33.3% 99 98.5 137.9
LANGUAGE 0 0.0% 0 0.0% 0 0.0 0.0
CHEMICAL NAME 11 0.7% 2 18.2% 97 174.2 180.6
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 52 3.5% 5 9.6% 5 33.3 81.2
EXACT PE 6 0.4% 0 0.0% 7 6.2 3.2
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 1 0.1% 0 0.0% 113 113.0 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 162 12.4% 44 27.2% 6 736.9 6771.3
Single 1,142 87.6% 278 24.3% 17 485.0 3525.0
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 1.9%
SHORT 83.2%
LONG 2.8%
TAGS 1.7%
FIELDS 2.3%
BROWSE REVIEW 0.0%
BROWSE LONG 0.0%
PERIODICALS 6.8%
COMMENTS 0.0%
Other 1.4%
2.2 Error, EXPLAIN and HELP statistics
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Percent of commands that contained errors 8.5%
Ten most frequent errors:
1. NS command - no next screen 44.1%
2. First word of command is invalid 31.1%
3. 167 4.6%
4. FIND command with invalid index name 3.3%
5. DISPLAY command contains invalid word 2.3%
6. PS command - no previous screen 2.3%
7. DISPLAY command - no FIND results 1.3%
8. Search term missing from search command 1.3%
9. NS of SHOW/EXP command-no next screen 1.0%
10. 1243 1.0%
11. All others 7.8%
Ten most frequent EXPLAIN requests:
1. INSPEC DATABASES 14.0%
2. GUIDE (INSPEC DBS) 11.6%
3. FIND (INSPEC DBS) 9.3%
4. MAIL 4.7%
5. LOCATE (INS/PSY DBS) 4.7%
6. INSPEC BACKFILES 4.7%
7. INDEXES (INSPEC DBS) 4.7%
8. DATABASES 4.7%
9. 1752 4.7%
10. G124 2.3%
11. All others 34.9%
Ten most frequent HELP situations:
1. First word of command is invalid 19.5%
2. Help requested from SET DB command 19.5%
3. NS command - no next screen 6.5%
4. DISPLAY command - middle of >1 screen 6.5%
5. 3 HELP commands issued from same code 5.2%
6. DISPLAY command - last of >1 screen 5.2%
7. FIND command with zero results 3.9%
8. SET command with invalid setting 2.6%
9. FIND command with invalid index name 2.6%
10. FIND command retrieves 1 book 2.6%
11. All others 26.0%
Ten most frequent SHOW requests:
1. SEARCH 42.9%
2. HISTORY 28.6%
3. SETTINGS (INS/PSY DBS) 14.3%
4. INSPEC NEWS 14.3%
11. All others 0.0%
INSmm/dd ins MELVYL INSPEC DATABASES TELNET STATISTICS (weekly)