MELVYL INSPEC DATABASES TELNET STATISTICS
Time period: 04/20/02 through 04/26/02
1.0 SUMMARY STATISTICS
_______________________
1.1 Total sessions:
____________________
Zero results may indicate no access to the database
Location Library Remote Total
________ _______ ______ _____
Berkeley 3 184 187
Davis 52 1 53
Irvine 62 0 62
Los Angeles 1 86 87
Riverside 7 118 125
San Diego 43 73 116
San Francisco 6 0 6
Santa Barbara 1 36 37
Santa Cruz 3 35 38
Lawrence Berkeley 0 23 23
Lawrence Livermore 0 15 15
Los Alamos 0 0 0
Other - UC 0 29 29
Other-Network UC n/a 291 291
_______ ______ _____
178 891 1,069
Relative use of INSPEC databases:
Number of Number of Number of
Sessions FIND commands Records Displayed
_________ _____________ _________________
INS (current) 625 1,452 10,831
INS90 157 392 1,579
INS85 98 174 873
INS80 96 207 769
INS69 93 225 1,399
Per hour usage:
Time Sessions Finds Records Displayed
__________ __________ __________ _________________
12-2 a.m. 39 76 522
2-4 a.m. 26 48 402
4-6 a.m. 21 64 459
6-8 a.m. 89 303 1,102
8-10 a.m. 183 383 2,205
10-12 a.m. 170 424 3,036
12-2 p.m. 132 242 1,027
2-4 p.m. 157 327 3,024
4-6 p.m. 94 232 1,499
6-8 p.m. 50 110 669
8-10 p.m. 73 176 1,207
10-12 p.m. 35 65 299
__________ __________ __________ _________________
Total: 1,069 2,450 15,451
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 3 416 419
Davis 112 1 113
Irvine 107 0 107
Los Angeles 3 226 229
Riverside 14 436 450
San Diego 82 162 244
San Francisco 19 0 19
Santa Barbara 3 66 69
Santa Cruz 8 55 63
Lawrence Berkeley 0 42 42
Lawrence Livermore 0 34 34
Los Alamos 0 0 0
Other - UC 0 70 70
Other-Network UC n/a 591 591
_______ ______ _____
351 2,099 2,450
1.3 Records displayed
______________________
Zero results may indicate no access to the database
Number of Records Displayed by location:
Location Library Remote Total
________ _______ ______ _____
Berkeley 30 3,946 3,976
Davis 673 1 674
Irvine 517 0 517
Los Angeles 6 1,187 1,193
Riverside 113 1,969 2,082
San Diego 390 1,138 1,528
San Francisco 41 0 41
Santa Barbara 1 591 592
Santa Cruz 40 203 243
Lawrence Berkeley 0 276 276
Lawrence Livermore 0 227 227
Los Alamos 0 0 0
Other - UC 0 307 307
Other-Network UC n/a 3,795 3,795
_______ ______ _____
1,811 13,640 15,451
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 4.7
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) 10:45
Average session length (minutes:seconds) 14:58
Longest session recorded (minutes:seconds) 341:51
Average number of searches completed per session 2.3
Retrievals per search - median 5.0
Retrievals per search - average 369.3
Retrievals per search - standard deviation 4090.8
Percent of searches completed with 0 results 26.4%
Percent of searches entered that are long 6.4%
Percent of long searches completed
(includes partial results) 81.0%
Commands entered, by type, excluding errors:
Total Percentage
__________ __________
FIND 2,146 31.7%
DISPLAY (excluding automatic displays) 2,353 34.8%
BROWSE 0 0.0%
SELECT 0 0.0%
HELP 49 0.7%
EXPLAIN 69 1.0%
SET/RESET 637 9.4%
SHOW 39 0.6%
ADD ON (AND, OR, AND NOT) 304 4.5%
LOGON or LOGOFF 898 13.3%
COMMENT 0 0.0%
SAVE 17 0.3%
USE 0 0.0%
OTHER 249 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 1,238 51.9% 281 22.7% 13 75.6 372.6
TITLE WORD 385 16.1% 173 44.9% 4 547.6 4815.0
EXACT TITLE 4 0.2% 2 50.0% 9 8.5 4.9
JOURNAL 65 2.7% 21 32.3% 20 1045.6 2708.4
EXACT JOURNAL 32 1.3% 15 46.9% 74 1479.9 4816.1
SUBJECT 59 2.5% 25 42.4% 36 3254.6 11824.1
EXACT SUBJECT 7 0.3% 1 14.3% 4,431 3288.5 2540.1
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 363 15.2% 64 17.6% 19 1786.0 10535.7
SUBFILE 0 0.0% 0 0.0% 0 0.0 0.0
FORM 6 0.3% 0 0.0% 22 48.5 52.4
DATE 57 2.4% 18 31.6% 10 51.1 83.4
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 1.1% 2 7.7% 6 15.0 23.3
CONFERENCE 13 0.5% 4 30.8% 205 429.1 780.4
LANGUAGE 2 0.1% 0 0.0% 23 23.0 0.0
CHEMICAL NAME 1 0.0% 1 100% 0 0.0 0.0
ISSN 2 0.1% 2 100% 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 113 4.7% 18 15.9% 10 237.8 1475.8
EXACT PE 14 0.6% 1 7.1% 2 4.5 5.3
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 0 0.0% 0 0.0% 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 269 12.7% 75 27.9% 6 548.5 5030.8
Single 1,847 87.3% 478 25.9% 16 540.8 5050.9
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 2.4%
SHORT 82.5%
LONG 1.5%
TAGS 0.5%
FIELDS 3.4%
BROWSE REVIEW 0.0%
BROWSE LONG 0.0%
PERIODICALS 9.1%
COMMENTS 0.0%
Other 0.6%
2.2 Error, EXPLAIN and HELP statistics
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Percent of commands that contained errors 8.0%
Ten most frequent errors:
1. NS command - no next screen 51.1%
2. First word of command is invalid 25.3%
3. FIND command with invalid index name 4.8%
4. DISPLAY command contains invalid word 2.6%
5. PS command - no previous screen 1.4%
6. Index invalid in current database 1.4%
7. DISPLAY command - no FIND results 1.2%
8. Command contains escape or arrow key 1.2%
9. Search term missing from search command 1.0%
10. NS of SHOW/EXP command-no next screen 1.0%
11. All others 9.1%
Ten most frequent EXPLAIN requests:
1. FIND (INSPEC DBS) 15.9%
2. GUIDE (INSPEC DBS) 14.5%
3. INSPEC DATABASES 13.0%
4. LOCATE (INS/PSY DBS) 8.7%
5. INSPEC BACKFILES 8.7%
6. COMMANDS (INS/PSY/ABI/BIO DBS) 8.7%
7. INDEXES (INSPEC DBS) 8.7%
8. 1752 8.7%
9. DISPLAY (INS/PSY DBS) 2.9%
10. I030 1.4%
11. All others 8.7%
Ten most frequent HELP situations:
1. Help requested from SET DB command 27.1%
2. First word of command is invalid 12.7%
3. FIND command with zero results 11.9%
4. FIND command with invalid index name 6.8%
5. NS command - no next screen 5.1%
6. DISPLAY command - middle of >1 screen 5.1%
7. DISPLAY command - last of >1 screen 5.1%
8. DISPLAY command-first of >1 screen 3.4%
9. SET DB command entered w/o modifier 2.5%
10. 3 HELP commands issued from same code 2.5%
11. All others 17.8%
Ten most frequent SHOW requests:
1. SEARCH 86.8%
2. HISTORY 5.3%
3. INSPEC NEWS 2.6%
4. FIND DISPLAY 2.6%
5. MAIL STATUS 2.6%
11. All others 0.0%
INSmm/dd ins MELVYL INSPEC DATABASES TELNET STATISTICS (weekly)