MELVYL INSPEC DATABASES TELNET STATISTICS
Time period: 02/24/01 through 03/02/01
1.0 SUMMARY STATISTICS
_______________________
1.1 Total sessions:
____________________
Zero results may indicate no access to the database
Location Library Remote Total
________ _______ ______ _____
Berkeley 10 365 375
Davis 39 5 44
Irvine 94 0 94
Los Angeles 6 196 202
Riverside 2 7 9
San Diego 86 221 307
San Francisco 20 0 20
Santa Barbara 27 97 124
Santa Cruz 12 32 44
Lawrence Berkeley 0 68 68
Lawrence Livermore 0 44 44
Los Alamos 0 0 0
Other - UC 2 55 57
Other-Network UC n/a 370 370
_______ ______ _____
298 1,460 1,758
Relative use of INSPEC databases:
Number of Number of Number of
Sessions FIND commands Records Displayed
_________ _____________ _________________
INS (current) 1,080 2,474 21,910
INS90 248 509 2,692
INS85 177 327 1,785
INS80 130 239 968
INS69 123 238 1,343
Per hour usage:
Time Sessions Finds Records Displayed
__________ __________ __________ _________________
12-2 a.m. 36 67 268
2-4 a.m. 32 104 852
4-6 a.m. 15 24 158
6-8 a.m. 97 197 771
8-10 a.m. 205 537 3,500
10-12 a.m. 289 533 5,111
12-2 p.m. 304 641 4,747
2-4 p.m. 321 684 5,648
4-6 p.m. 201 480 3,834
6-8 p.m. 146 302 2,629
8-10 p.m. 63 128 671
10-12 p.m. 49 90 509
__________ __________ __________ _________________
Total: 1,758 3,787 28,698
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 31 775 806
Davis 97 6 103
Irvine 208 0 208
Los Angeles 9 418 427
Riverside 5 19 24
San Diego 257 500 757
San Francisco 53 0 53
Santa Barbara 57 256 313
Santa Cruz 27 48 75
Lawrence Berkeley 0 156 156
Lawrence Livermore 0 106 106
Los Alamos 0 0 0
Other - UC 9 111 120
Other-Network UC n/a 639 639
_______ ______ _____
753 3,034 3,787
1.3 Records displayed
______________________
Zero results may indicate no access to the database
Number of Records Displayed by location:
Location Library Remote Total
________ _______ ______ _____
Berkeley 246 6,494 6,740
Davis 1,767 12 1,779
Irvine 1,842 0 1,842
Los Angeles 46 2,597 2,643
Riverside 4 77 81
San Diego 1,043 3,996 5,039
San Francisco 853 0 853
Santa Barbara 202 3,416 3,618
Santa Cruz 140 360 500
Lawrence Berkeley 0 1,284 1,284
Lawrence Livermore 0 670 670
Los Alamos 0 0 0
Other - UC 68 707 775
Other-Network UC n/a 2,874 2,874
_______ ______ _____
6,211 22,487 28,698
1.4 Response time
__________________
Search response time from receipt of command at
DLA until transmission of response:
Average in seconds 0.9
Standard deviation in seconds 5.8
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
_________________________________________
Median session length (minutes:seconds) 7:15
Average session length (minutes:seconds) 12:28
Longest session recorded (minutes:seconds) 431:30
Average number of searches completed per session 2.1
Retrievals per search - median 6.0
Retrievals per search - average 1121.3
Retrievals per search - standard deviation 18225
Percent of searches completed with 0 results 27.1%
Percent of searches entered that are long 5.5%
Percent of long searches completed
(includes partial results) 73.3%
Commands entered, by type, excluding errors:
Total Percentage
__________ __________
FIND 3,421 29.6%
DISPLAY (excluding automatic displays) 4,279 37.1%
BROWSE 19 0.2%
SELECT 1 0.0%
HELP 63 0.5%
EXPLAIN 132 1.1%
SET/RESET 1,014 8.8%
SHOW 33 0.3%
ADD ON (AND, OR, AND NOT) 366 3.2%
LOGON or LOGOFF 1,569 13.6%
COMMENT 0 0.0%
SAVE 173 1.5%
USE 7 0.1%
OTHER 483 4.2%
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 1,548 39.9% 402 26.0% 16 81.0 293.9
TITLE WORD 753 19.4% 306 40.6% 4 83.2 402.5
EXACT TITLE 41 1.1% 24 58.5% 2 9.7 22.3
JOURNAL 145 3.7% 59 40.7% 65 1378.1 3812.0
EXACT JOURNAL 34 0.9% 11 32.4% 23 755.3 1766.7
SUBJECT 208 5.4% 54 26.0% 26 1426.4 4375.8
EXACT SUBJECT 13 0.3% 2 15.4% 30 1629.2 4662.2
THESAURUS 14 0.4% 4 28.6% 1,364 4083.8 5208.6
EXACT THESAURUS 4 0.1% 0 0.0% 3,593 4572.3 4528.8
KEYWORD 711 18.3% 113 15.9% 33 3381.3 32317.6
SUBFILE 3 0.1% 1 33.3% 9 8.5 9.2
FORM 57 1.5% 11 19.3% 8 217.7 1229.8
DATE 58 1.5% 24 41.4% 11 67.2 119.8
ADDED 11 0.3% 11 100% 0 0.0 0.0
ARTICLE 0 0.0% 0 0.0% 0 0.0 0.0
AUTHOR AFFIL. 39 1.0% 11 28.2% 38 111.9 203.1
CONFERENCE 32 0.8% 12 37.5% 85 437.1 662.3
LANGUAGE 6 0.2% 2 33.3% 1,184 1169.8 1234.9
CHEMICAL NAME 40 1.0% 14 35.0% 9 138.3 509.5
ISSN 4 0.1% 0 0.0% 6,975 6974.5 1136.8
ISBN 2 0.1% 2 100% 0 0.0 0.0
ID NUMBER 0 0.0% 0 0.0% 0 0.0 0.0
PERIODICAL 122 3.1% 20 16.4% 5 191.7 1267.6
EXACT PE 25 0.6% 2 8.0% 2 4.1 6.6
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 7 0.2% 4 57.1% 2,239 1497.0 1285.2
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 481 14.3% 167 34.7% 7 115.5 818.2
Single 2,888 85.7% 743 25.7% 19 1210.5 17182.3
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 7 36.8% 4 57.1% 1 1.0 0.0
EXACT THESAURUS 12 63.2% 0 0.0% 1 3.7 4.1
DISPLAY commands, by type, excluding automatic displays:
REVIEW 2.9%
SHORT 84.4%
LONG 2.4%
TAGS 0.3%
FIELDS 3.9%
BROWSE REVIEW 0.2%
BROWSE LONG 0.0%
PERIODICALS 4.8%
COMMENTS 0.0%
Other 1.1%
2.2 Error, EXPLAIN and HELP statistics
_______________________________________
Percent of commands that contained errors 9.2%
Ten most frequent errors:
1. NS command - no next screen 41.7%
2. First word of command is invalid 30.1%
3. FIND command with invalid index name 6.2%
4. Max. # of ports to a Z39 db are in use 2.6%
5. NS of SHOW/EXP command-no next screen 2.1%
6. DISPLAY command contains invalid word 2.0%
7. Valid command at an inappropriate time 1.2%
8. Search term missing from search command 1.2%
9. 963 1.1%
10. DISPLAY command-record numbers too large 0.9%
11. All others 10.9%
Ten most frequent EXPLAIN requests:
1. FIND (INSPEC DBS) 13.6%
2. INSPEC DATABASES 9.1%
3. INSPEC BACKFILES 9.1%
4. INDEXES (INSPEC DBS) 9.1%
5. MAIL 7.6%
6. LOCATE (INS/PSY DBS) 6.8%
7. GUIDE (INSPEC DBS) 5.3%
8. COMMANDS (INS/PSY/ABI/BIO DBS) 3.8%
9. Unrecognized term 3.8%
10. I040 2.3%
11. All others 29.5%
Ten most frequent HELP situations:
1. Help requested from SET DB command 32.8%
2. First word of command is invalid 9.7%
3. FIND command retrieves >1 book 8.7%
4. DISPLAY command-first of >1 screen 7.2%
5. DISPLAY command - middle of >1 screen 5.1%
6. DISPLAY command-complete in one screen 4.6%
7. Multi-index search with zero results 4.6%
8. NS command - no next screen 4.1%
9. FIND command with invalid index name 4.1%
10. FIND command with zero results 3.1%
11. All others 15.9%
Ten most frequent SHOW requests:
1. HISTORY 71.9%
2. INSPEC LOADING STATISTICS 6.3%
3. GLOSSARY 6.3%
4. MAIL STATUS 6.3%
5. 0422 3.1%
6. MAIL SETTINGS 3.1%
7. SEARCH 3.1%
11. All others 0.0%
INSmm/dd ins MELVYL INSPEC DATABASES TELNET STATISTICS (weekly)