MELVYL ABI DATABASE TELNET STATISTICS
Time period: 04/01/00 through 04/30/00
1.0 SUMMARY STATISTICS
_______________________
1.1 Total sessions:
____________________
Zero results may indicate no access to the database
Location Library Remote Total
________ _______ ______ _____
Berkeley 62 396 458
Davis 132 4 136
Irvine 111 0 111
Los Angeles 26 173 199
Riverside 51 6 57
San Diego 36 40 76
San Francisco 37 0 37
Santa Barbara 25 38 63
Santa Cruz 41 3 44
Lawrence Berkeley 0 0 0
Lawrence Livermore 0 4 4
Los Alamos 0 0 0
Other - UC 5 15 20
Other-Network UC n/a 313 313
_______ ______ _____
526 992 1,518
Per hour usage:
Time Sessions Finds Records Displayed
__________ __________ __________ _________________
12-2 a.m. 26 88 1,568
2-4 a.m. 4 11 31
4-6 a.m. 8 38 501
6-8 a.m. 30 90 927
8-10 a.m. 167 410 3,699
10-12 a.m. 272 917 7,851
12-2 p.m. 278 773 9,883
2-4 p.m. 271 927 10,309
4-6 p.m. 203 583 7,140
6-8 p.m. 107 365 5,005
8-10 p.m. 81 239 5,984
10-12 p.m. 71 250 2,795
__________ __________ __________ _________________
Total: 1,518 4,691 55,693
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 168 1,211 1,379
Davis 496 16 512
Irvine 258 0 258
Los Angeles 75 698 773
Riverside 77 11 88
San Diego 162 122 284
San Francisco 122 0 122
Santa Barbara 96 139 235
Santa Cruz 89 12 101
Lawrence Berkeley 0 0 0
Lawrence Livermore 0 11 11
Los Alamos 0 0 0
Other - UC 9 102 111
Other-Network UC n/a 817 817
_______ ______ _____
1,552 3,139 4,691
1.3 Records displayed
______________________
Zero results may indicate no access to the database
Number of Records Displayed by location:
Location Library Remote Total
________ _______ ______ _____
Berkeley 1,498 13,787 15,285
Davis 3,094 118 3,212
Irvine 3,620 0 3,620
Los Angeles 892 9,984 10,876
Riverside 500 111 611
San Diego 908 1,938 2,846
San Francisco 924 0 924
Santa Barbara 477 2,012 2,489
Santa Cruz 996 948 1,944
Lawrence Berkeley 0 0 0
Lawrence Livermore 0 82 82
Los Alamos 0 0 0
Other - UC 1,073 1,127 2,200
Other-Network UC n/a 11,604 11,604
_______ ______ _____
13,982 41,711 55,693
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 0.1
2.0 ABI Database Detailed Statistics
_________________________________________
Median session length (minutes:seconds) 8:28
Average session length (minutes:seconds) 12:58
Longest session recorded (minutes:seconds) 391:59
Average number of searches completed per session 3.1
Retrievals per search - median 7.0
Retrievals per search - average 1248.8
Retrievals per search - standard deviation 11273
Percent of searches completed with 0 results 28.1%
Percent of searches entered that are long 2.3%
Percent of long searches completed
(includes partial results) 66.7%
Commands entered, by type, excluding errors:
Total Percentage
__________ __________
FIND 4,107 26.1%
DISPLAY (excluding automatic displays) 6,786 43.1%
BROWSE 25 0.2%
SELECT 3 0.0%
HELP 296 1.9%
EXPLAIN 312 2.0%
SET/RESET 656 4.2%
SHOW 67 0.4%
ADD ON (AND, OR, AND NOT) 584 3.7%
LOGON or LOGOFF 1,858 11.8%
COMMENT 0 0.0%
SAVE 522 3.3%
USE 5 0.0%
OTHER 553 3.5%
2.1 Article Text
_________________
DISPLAY TEXT commands 614
TEXT included with CONTINUOUS, PRINT, CAPTURE, or SLOW 108
displays or when any of these paging options is set.
TEXT included with MAIL commands 0
SET DISPLAY TEXT commands 0
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 1,186 26.3% 271 22.8% 11 62.4 254.6
TITLE WORD 839 18.6% 343 40.9% 6 115.6 683.2
EXACT TITLE 58 1.3% 29 50.0% 1 26.0 90.4
JOURNAL 183 4.1% 80 43.7% 1,086 3259.6 5841.2
EXACT JOURNAL 135 3.0% 49 36.3% 894 3167.6 6843.3
SUBJECT 438 9.7% 238 54.3% 202 5736.6 20864.8
EXACT SUBJECT 43 1.0% 16 37.2% 266 4269.5 9886.7
KEYWORD 1,220 27.1% 195 16.0% 57 3238.4 21429.9
PUB TYPE 26 0.6% 4 15.4% 68 125.5 296.8
DATE 159 3.5% 34 21.4% 14 3115.3 23871.5
ADDED 8 0.2% 0 0.0% 14,556 12768.4 4077.5
ARTICLE 0 0.0% 0 0.0% 0 0.0 0.0
LANGUAGE 7 0.2% 1 14.3% 67 501.8 1010.0
GEOGRAPHIC NAME 8 0.2% 2 25.0% 118 177.3 226.4
SUBJ CATEGORY 6 0.1% 0 0.0% 28,075 23829.5 21560.5
COMPANY NAME 57 1.3% 19 33.3% 34 891.5 2628.9
EX COMPANY NAME 6 0.1% 4 66.7% 21 21.0 9.9
DUNS 0 0.0% 0 0.0% 0 0.0 0.0
TICKER SYMBOL 2 0.0% 2 100% 0 0.0 0.0
ID NUMBER 0 0.0% 0 0.0% 0 0.0 0.0
ISSN 2 0.0% 0 0.0% 860 859.5 758.7
PERIODICAL 77 1.7% 18 23.4% 9 41.1 92.0
EXACT PE 23 0.5% 5 21.7% 6 13.9 20.4
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 25 0.6% 6 24.0% 42 2035.8 4274.1
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 417 10.2% 127 30.5% 13 1440.4 15709.1
Single 3,656 89.8% 1,052 28.8% 26 1992.4 14032.2
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:
SUBJECT 24 96.0% 12 50.0% 4 9.9 15.9
EXACT SUBJECT 1 4.0% 0 0.0% 2 2.0 0.0
DISPLAY commands, by type, excluding automatic displays:
REVIEW 4.3%
SHORT 87.3%
LONG 1.0%
TAGS 0.0%
FIELDS 2.1%
BROWSE REVIEW 0.1%
BROWSE LONG 0.0%
PERIODICALS 1.9%
COMMENTS 0.0%
Other 3.4%
2.2 Error, EXPLAIN and HELP statistics
_______________________________________
Percent of commands that contained errors 9.6%
Ten most frequent errors:
1. First word of command is invalid 32.9%
2. NS command - no next screen 30.3%
3. FIND command with invalid index name 10.4%
4. DISPLAY command contains invalid word 3.9%
5. PS command - no previous screen 3.5%
6. Valid command at an inappropriate time 2.3%
7. Search term missing from search command 1.6%
8. Add-on search, no index name after verb 1.4%
9. DISPLAY command - no FIND results 1.1%
10. Command contains escape or arrow key 1.0%
11. All others 11.5%
Ten most frequent EXPLAIN requests:
1. GUIDE (ABI DB) 28.5%
2. INDEXES (ABI DB) 12.2%
3. FIND (ABI DB) 9.9%
4. COMMANDS (ABI/PSY DBS) 9.0%
5. LOCATE (ARTICLE DBS) 7.1%
6. MAIL 3.5%
7. DATABASES 3.2%
8. Unrecognized term 2.9%
9. DATE (ABI DB) 1.9%
10. PUBLICATION TYPES (ABI DB) 1.9%
11. All others 19.9%
Ten most frequent HELP situations:
1. Help requested from SET DB command 21.2%
2. First word of command is invalid 15.3%
3. FIND command with zero results 9.4%
4. DISPLAY command - middle of >1 screen 8.7%
5. FIND command with invalid index name 7.7%
6. FIND command retrieves >1 book 5.9%
7. DISPLAY command-first of >1 screen 4.4%
8. DISPLAY command-complete in one screen 3.8%
9. NS command - no next screen 2.6%
10. DISPLAY command - last of >1 screen 2.1%
11. All others 18.8%
Ten most frequent SHOW requests:
1. HISTORY 53.1%
2. SEARCH 23.4%
3. MAIL STATUS 10.9%
4. GLOSSARY 3.1%
5. PUBLICATION TYPES (ABI DB) 1.6%
6. SETTINGS (ABI DB) 1.6%
7. LOCATION 1.6%
8. SYSTEM NEWS 1.6%
9. MAIL SETTINGS 1.6%
10. DATABASES 1.6%
11. All others 0.0%
ABImm/dd abi MELVYL ABI DATABASE TELNET STATISTICS (weekly)