MELVYL ABI DATABASE TELNET STATISTICS
Time period: 07/01/99 through 07/31/99
1.0 SUMMARY STATISTICS
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1.1 Total sessions:
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Zero results may indicate no access to the database
Location Library Remote Total
________ _______ ______ _____
Berkeley 46 537 583
Davis 142 19 161
Irvine 243 0 243
Los Angeles 31 388 419
Riverside 34 4 38
San Diego 35 40 75
San Francisco 70 0 70
Santa Barbara 30 40 70
Santa Cruz 38 33 71
Lawrence Berkeley 0 1 1
Lawrence Livermore 0 1 1
Los Alamos 0 0 0
Other - UC 4 14 18
Other-Network UC n/a 359 359
_______ ______ _____
673 1,436 2,109
Per hour usage:
Time Sessions Finds Records Displayed
__________ __________ __________ _________________
12-2 a.m. 28 87 1,569
2-4 a.m. 21 111 1,689
4-6 a.m. 15 83 1,587
6-8 a.m. 44 107 1,113
8-10 a.m. 220 597 5,939
10-12 a.m. 415 1,251 21,886
12-2 p.m. 403 1,495 17,494
2-4 p.m. 465 1,622 23,174
4-6 p.m. 295 900 14,656
6-8 p.m. 95 424 5,371
8-10 p.m. 65 325 5,355
10-12 p.m. 43 170 2,808
__________ __________ __________ _________________
Total: 2,109 7,172 102,641
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 118 1,832 1,950
Davis 500 72 572
Irvine 914 0 914
Los Angeles 128 1,407 1,535
Riverside 125 7 132
San Diego 114 150 264
San Francisco 231 0 231
Santa Barbara 89 272 361
Santa Cruz 113 119 232
Lawrence Berkeley 0 2 2
Lawrence Livermore 0 1 1
Los Alamos 0 0 0
Other - UC 8 45 53
Other-Network UC n/a 925 925
_______ ______ _____
2,340 4,832 7,172
1.3 Records displayed
______________________
Zero results may indicate no access to the database
Number of Records Displayed by location:
Location Library Remote Total
________ _______ ______ _____
Berkeley 1,042 24,325 25,367
Davis 4,668 670 5,338
Irvine 8,820 0 8,820
Los Angeles 1,568 25,106 26,674
Riverside 3,098 70 3,168
San Diego 719 1,489 2,208
San Francisco 4,348 0 4,348
Santa Barbara 1,078 3,992 5,070
Santa Cruz 1,272 582 1,854
Lawrence Berkeley 0 16 16
Lawrence Livermore 0 7 7
Los Alamos 0 0 0
Other - UC 79 305 384
Other-Network UC n/a 19,387 19,387
_______ ______ _____
26,692 75,949 102,641
1.4 Response time
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Search response time from receipt of command at
DLA until transmission of response:
Average in seconds 0.7
Standard deviation in seconds 1.5
Display response time from receipt of command at
DLA until transmission of a complete screen:
Average in seconds 0.1
Standard deviation in seconds 0.2
2.0 ABI Database Detailed Statistics
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Median session length (minutes:seconds) 9:17
Average session length (minutes:seconds) 14:34
Longest session recorded (minutes:seconds) 238:09
Average number of searches completed per session 3.4
Retrievals per search - median 9.0
Retrievals per search - average 966.0
Retrievals per search - standard deviation 6383.5
Percent of searches completed with 0 results 26.2%
Percent of searches entered that are long 2.2%
Percent of long searches completed
(includes partial results) 66.9%
Commands entered, by type, excluding errors:
Total Percentage
__________ __________
FIND 6,433 23.8%
DISPLAY (excluding automatic displays) 13,516 49.9%
BROWSE 17 0.1%
SELECT 3 0.0%
HELP 356 1.3%
EXPLAIN 402 1.5%
SET/RESET 878 3.2%
SHOW 115 0.4%
ADD ON (AND, OR, AND NOT) 737 2.7%
LOGON or LOGOFF 2,673 9.9%
COMMENT 1 0.0%
SAVE 1,121 4.1%
USE 28 0.1%
OTHER 814 3.0%
2.1 Article Text
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DISPLAY TEXT commands 1,326
TEXT included with CONTINUOUS, PRINT, CAPTURE, or SLOW 178
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 1,619 22.9% 319 19.7% 12 62.3 225.4
TITLE WORD 1,240 17.6% 480 38.7% 8 88.8 372.2
EXACT TITLE 56 0.8% 26 46.4% 1 40.0 149.7
JOURNAL 426 6.0% 124 29.1% 572 3691.2 14069.6
EXACT JOURNAL 179 2.5% 58 32.4% 828 4675.5 8911.4
SUBJECT 623 8.8% 328 52.6% 252 5009.4 12947.1
EXACT SUBJECT 25 0.4% 15 60.0% 146 2572.5 5246.5
KEYWORD 2,286 32.4% 372 16.3% 65 1545.7 8158.7
PUB TYPE 58 0.8% 1 1.7% 27 238.1 651.0
DATE 206 2.9% 29 14.1% 22 117.3 229.1
ADDED 2 0.0% 0 0.0% 13,917 13917.0 0.0
ARTICLE 0 0.0% 0 0.0% 0 0.0 0.0
LANGUAGE 0 0.0% 0 0.0% 0 0.0 0.0
GEOGRAPHIC NAME 5 0.1% 0 0.0% 19 97.0 173.1
SUBJ CATEGORY 4 0.1% 0 0.0% 21 45.3 63.7
COMPANY NAME 113 1.6% 27 23.9% 48 282.4 1637.7
EX COMPANY NAME 2 0.0% 0 0.0% 30 30.0 0.0
DUNS 0 0.0% 0 0.0% 0 0.0 0.0
TICKER SYMBOL 0 0.0% 0 0.0% 0 0.0 0.0
ID NUMBER 0 0.0% 0 0.0% 0 0.0 0.0
ISSN 1 0.0% 0 0.0% 2,679 2679.0 0.0
PERIODICAL 103 1.5% 29 28.2% 7 104.4 225.5
EXACT PE 37 0.5% 5 13.5% 4 107.3 396.6
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 75 1.1% 17 22.7% 19 1652.7 4155.3
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 608 9.5% 112 18.4% 14 152.1 852.9
Single 5,777 90.5% 1,599 27.7% 32 1515.9 7835.4
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 15 88.2% 5 33.3% 18 20.5 20.0
EXACT SUBJECT 2 11.8% 2 100% 0 0.0 0.0
DISPLAY commands, by type, excluding automatic displays:
REVIEW 2.2%
SHORT 92.4%
LONG 0.9%
TAGS 0.0%
FIELDS 1.9%
BROWSE REVIEW 0.0%
BROWSE LONG 0.0%
PERIODICALS 1.3%
COMMENTS 0.0%
Other 1.3%
2.2 Error, EXPLAIN and HELP statistics
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Percent of commands that contained errors 8.8%
Ten most frequent errors:
1. NS command - no next screen 32.1%
2. First word of command is invalid 30.0%
3. FIND command with invalid index name 8.3%
4. DISPLAY command contains invalid word 5.6%
5. PS command - no previous screen 3.4%
6. Valid command at an inappropriate time 2.2%
7. Search term missing from search command 1.6%
8. 118 1.5%
9. DISPLAY command-record numbers too large 1.4%
10. Command contains escape or arrow key 1.3%
11. All others 12.7%
Ten most frequent EXPLAIN requests:
1. GUIDE (ABI DB) 19.4%
2. INDEXES (ABI DB) 10.7%
3. FIND (ABI DB) 10.2%
4. COMMANDS (ABI/PSY DBS) 5.5%
5. LOCATE (ARTICLE DBS) 5.0%
6. DATABASES 5.0%
7. Unrecognized term 4.7%
8. MAIL 4.2%
9. DISPLAY (ABI DB) 3.5%
10. DATE (ABI DB) 2.7%
11. All others 29.1%
Ten most frequent HELP situations:
1. Help requested from SET DB command 23.9%
2. First word of command is invalid 16.8%
3. FIND command with invalid index name 6.3%
4. DISPLAY command-first of >1 screen 6.3%
5. FIND command with zero results 5.8%
6. FIND command retrieves >1 book 4.1%
7. DISPLAY command - middle of >1 screen 4.1%
8. DISPLAY command-complete in one screen 3.8%
9. PS command - no previous screen 2.9%
10. DISPLAY command - last of >1 screen 2.9%
11. All others 23.1%
Ten most frequent SHOW requests:
1. HISTORY 50.0%
2. SEARCH 27.6%
3. MAIL STATUS 7.1%
4. SETTINGS (ABI DB) 2.0%
5. ABI NEWS 2.0%
6. GLOSSARY 2.0%
7. SYSTEM NEWS 2.0%
8. MAIL SETTINGS 2.0%
9. PUBLICATION TYPES (ABI DB) 1.0%
10. CATALOG WEEKLY STATISTICS 1.0%
11. All others 3.1%