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[交流] 关于turtle的使用问题

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发表于 2008-3-14 16:14:39 | 显示全部楼层 |阅读模式
我将customer设为 turtles-own,初始值赋为-1,为的是当turtle遇到同伴时就将其中的一个turtle认为自己的customer,然后进行交易,如下:( a, u+ o: e1 t" b% m* K
to do-business
. H3 d; G* x) s0 k7 { rt random 3607 |* X% |) s. J5 E0 K+ J" N# C
fd 1
* x/ p/ P! G! ?8 a! O ifelse(other turtles-here != nobody)[
6 L3 S+ G6 H& c% O   set customer one-of other turtles-here ;;这样一来,customer不代表了一个turtle吗?但在运行时出现了问题.
5 _8 p6 q) X  U0 r6 o   set [trade-record-one] of self item (([who] of customer) - 1)  [trade-record-all]of self    - R4 v5 p1 F! _# _% I, q8 y1 Y
   set [trade-record-one] of customer item (([who] of self) - 1)  [trade-record-all]of customer
7 W# T+ y" [, q" [% }   set [trade-record-one-len] of self length [trade-record-one] of self
* e, a4 y# E! i* S+ `   set trade-record-current( list (timer) (random money-upper-limit))6 l' m! U$ P% `/ `
7 q4 T' _2 o3 j! r' G- G$ @" ?
问题的提示如下:
7 T* q8 ~, O) O; \4 q7 Q' P' @& ~6 ~# {. c* Q
error while turtle 50 running OF in procedure DO-BUSINESS' H+ }, @8 d) a
  called by procedure GO
6 E4 X% p" y2 C- ZOF expected input to be a turtle agentset or turtle but got NOBODY instead.8 `+ C: N0 I' N' D( L, F# I
(halted running of go)
+ v+ g. f) I. l8 c# M1 {% v" D
9 ?: ]& j# \7 \5 C" P这是为什么呢?我看到一些netlogo中自带的例子也是用这种方法来找turtle的同伴的啊?期待高手解答~~$ i4 Q; l* ?- X4 g
另外,我用([who] of customer)来获取turtle的编号的方法对的吗?如  set [trade-record-one] of self item (([who] of customer) - 1)  [trade-record-all]of self    中.

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发表于 2008-3-17 17:34:20 | 显示全部楼层

资料不全

你把你的所有程序传上来我看一下,估计不是大问题。(南京大学)
 楼主| 发表于 2008-3-18 13:10:54 | 显示全部楼层
你好,这是我现在正在写着的程序,以上问题就在其中,请多指教6 G3 [7 X% O1 W* Y
globals[0 ]/ }( b1 i; J$ w
xmax
, ~8 f8 H0 X4 `+ W  h: @; iymax
: w( D; V! E, N0 s  ?global-reputation-list
4 J- E9 ~7 e, a$ u, d' r: _
  ~# @& E: {) @6 Q;;
每一个turtle的全局声誉都存在此LIST
: X7 a+ D6 z, V* G) dcredibility-list
$ H: }2 i1 ~0 M, y- r5 i;;
每一个turtle的评价可信度+ [5 n/ R) h0 D- C6 S, X) o
honest-service
5 C$ {0 i- X$ a/ runhonest-service
# ~* V# \. j# j  e. x7 Goscillation5 @3 ]9 y' c% }7 y
rand-dynamic/ }! g" R: h. |* N/ f, u0 b/ H! ~
]
0 D7 e/ U, N* `9 y+ g& t: }8 A+ {8 P
turtles-own[
5 W& c2 I; k" }3 g9 o6 atrade-record-all
( k# m7 v* i  {;;a list of lists,
trade-record-one组成, ~5 S1 v. H" K2 C$ t- \; c$ L
trade-record-one
! j6 Z% U) o6 D1 T+ R- q; O;;list,trade-record-all
中的一个list,作为暂存用,记录两个turtles的交易记录( `% \" V  a2 I6 C( D' p

9 f) `" y6 [; p: ]3 ^* c;;[
对方turtle的编号,交易总次数,交易总金额,[本次交易的时间,交易金额,得到的评价,给出的评价,评价时间,此次交易后相对于对方turtle的局部声誉]]
# J/ N, h7 r: ?/ B# [; Qtrade-record-current;;list,trade-record-one中的这个list,作为暂存用,[本次交易的时间,交易金额,得到的评价,给出的评价,评价时间,此次交易后相对于对方turtle的局部声誉]
. T4 i5 d" V* K( |: H6 Acredibility-receive ;;list,他每个turtle还需要有一个存储其他turtle对其评价质量进行评价的list3 Y* h; ~) L1 q& ?0 r) J
neighbor-total
9 A: s/ f6 \) n  |" A+ T' _;;
记录该turtle的邻居节点的数目
2 b/ {/ S& ^0 x% s# G/ o! T8 g4 strade-time
5 G0 i# W" ?# o6 \" p0 N;;
当前发生交易的turtle的交易时间& w) m# m. P4 b. [
appraise-give
5 Q9 B6 l9 v% V+ c2 @6 [3 [: n; w;;
当前发生交易时给出的评价
! i# r. G, L! v/ ^: mappraise-receive
% [. M3 y$ ^) {. {;;
当前发生交易时收到的评价8 ~6 h- i& K# J5 Y3 I( i
appraise-time
% w; U% R4 d: d0 S; V;;
当前发生交易时的评价时间/ W6 k/ {- v0 D' m
local-reputation-now;;此次交易后相对于对方turtle的局部声誉
* M1 _+ h- Z7 q" H; htrade-times-total5 y7 a* f: l( G
;;
与当前turtle的交易总次数
9 p% V3 h2 {. itrade-money-total
; C; f$ C8 Y0 C: Q;;
与当前turtle的交易总金额: J' w9 ^5 g# y8 W* }
local-reputation
) i( a3 F! {4 N" I6 l7 \% Cglobal-reputation
0 h# e, w5 C+ vcredibility4 k0 T& I8 @7 C
;;
评价可信度,每次交易后都需要更新! [# g1 H/ s8 l$ ?
credibility-all
- p9 Y+ m5 B; ]# Q;;a list of lists,
credibility-one组成。[[1j的评价质量的评价][2j的评价质量的评价]……[ij的评价质量的评价]……],其中一共有people项,根据
9 g# h2 O0 b' w2 N' j% g
) p" Y4 A6 W5 I/ G; };;turtle
的编号对号入座,对于其自身的编号,在计算用到的时候再进行剔减,初始值均为0.5
+ D) ^  ^) C5 e7 T8 Zcredibility-one& `: F$ B( q; f, W' B+ ~% H% a% J
;;a list [i
j1的评价的质量评价,ij2的评价的质量评价……],其中一共有people
- G# ^: G; S/ F; bglobal-proportion
) u. L+ h( D$ y* O, t& D( V3 `customer; R, n4 U" `* g2 ], |
customer-no
( m. J1 H0 D- I2 Ctrust-ok) f$ x" g  S5 F7 S/ w# ~
trade-record-one-len;;trade-record-one的长度" f, }* c6 U: W) B2 c& ~1 K
]( ]: m) C! V5 K. k8 [! ]: v5 T
' Z; H3 P, j# O% H6 |3 I9 Q8 h
;;setup procedure
+ T9 a0 C/ P) T! z) O, v& E
* C: X6 p% t" C$ f$ c( [to setup4 R3 h: w/ X. t+ A+ c, A
9 k$ i: b5 G* o( N2 [6 k# l/ \) y; ?
ca
/ {8 I! |6 [4 \
" Q1 _9 G, |7 v4 l( f- p
initialize-settings
, `" l/ r; ^) P. @, g* p6 h3 S
5 P! @! p' M* i5 F5 e9 B) N- G, l
crt people [setup-turtles]

# e; \6 w) g# }* x% F* {7 o# E) g  f: i4 I
reset-timer

/ t! l4 Y, X2 y7 D) V/ P6 R; ~3 B( X
poll-class
4 Q- t' O# r- s, Q' H# E

: A# k) c, V! G" Ksetup-plots
% Z2 Z! e0 @( C3 U7 l
' W, p" `: B1 ]' a. l
do-plots

: t: T& Q1 d; Lend
( G/ A0 w. I9 j( k3 j3 j5 |3 q# P" ]* W
to initialize-settings
7 Q% m& [) F* E- @! T) Z7 g  b- _  l+ \( J2 N2 r  V4 f, Y* |
set global-reputation-list []

1 T; ?: V2 [, m' `' D, {
8 y" r3 N( O  V4 |8 Mset credibility-list n-values people [0.5]

4 ~& w. B) L1 \# T" W1 V: C7 u; Y3 ]  u
set honest-service 0

6 f! ^* H8 Y( M9 O3 g/ I6 d  X, O6 l' z6 s
set unhonest-service 0

; m8 Z! h$ W3 @" ]# x$ C/ ^5 x1 @; w; u
set oscillation 0

: U5 S  V  u" h% o7 y& I, U8 J# x! n9 Z2 a; u
set rand-dynamic 0

# [+ C# {& |- h2 u$ z1 y) P4 y, n. ?" Eend
( r' }  V  o0 i# y
# K0 h! Z( W  Y" A, `; |, T- [6 kto setup-turtles , i/ s6 _4 I/ ]* |- F
set shape "person"7 i$ |  V( l+ H( `( l" I
setxy random-xcor random-ycor- W- m7 \# w; B$ r' v
set trade-record-one []
$ }3 `% r; F- b  D9 c6 Z" y

1 X$ T6 S' W5 m1 L, J, \9 dset trade-record-all n-values people [(list (? + 1) 0 0)] 3 G& D& o% {9 i7 Z# f6 c

4 O! j% X7 K0 y- oset trade-record-current []8 `/ W$ q! N5 W. p) F
set credibility-receive []6 A: W: T& b5 V7 N) F( i& a
set local-reputation 0.5* R  Z$ }! a: _- a
set neighbor-total 0& j* Q6 P; Q5 c6 L# A/ |
set trade-times-total 0
# a; `! f' I& Z5 @8 z- O, H' r! hset trade-money-total 01 b0 _6 G& l  j/ N7 h
set customer nobody+ E& T$ C9 r6 o# Q  S
set credibility-all n-values people [creat-credibility]  X: z" w: y- d" G5 x1 i
set credibility n-values people [-1]
$ Q5 s- ]) |4 u' c$ ?get-color  i) J$ t" O7 z: G* z! H. b5 E% k
  X& V4 M0 t4 h+ L( ~# R" Y8 j7 k
end
6 [  h, I( k; ]9 u2 d5 K7 O( _& `* G% P
7 v0 f8 Z. ]  F8 b8 w, pto-report creat-credibility+ {( H  R- B, p. w' R$ s; j
report n-values people [0.5]
7 j  Q) q1 q0 Z  d- }% ?end, d' r& J8 y* i  F  M& b& ~

7 ?' d  S$ F3 A$ ?% ito setup-plots, l  @; b* q) y6 K4 I0 @, f
4 V* e+ C2 f  l* z8 r) O. ]: g; h
set xmax 30
. P0 j+ v7 `9 z7 D
+ K2 l4 w: B& L0 N9 t) p
set ymax 1.0
* \; g. f1 Z# r
/ y6 }. C' P) j/ M# L# M2 J: G0 ~1 D
clear-all-plots
2 e1 S% w: ]/ o% L5 N: v8 M  H
1 |4 N" T. T9 n9 x/ ~
setup-plot1

5 |* c6 G4 z  Q1 r3 |4 L! d8 F$ o0 s8 Y# c$ y1 E/ U8 y/ K
setup-plot2
/ {/ ^0 c* K" Z1 f7 A5 O' m5 J+ z

% h6 {; F  L3 t, Psetup-plot3
4 u- N9 U- z) Z2 v6 V2 b
end
# o( m0 o9 o) \4 l9 x) {( q' m0 M' n
;;run time procedures
( b% Q' q: N4 W( B
4 c* H% _: S  ~% P9 i# _to go. ^$ C0 ?5 e# T8 K1 U2 i

6 L2 v3 D8 c6 a; ^ask turtles [do-business]

! V# e3 Q& o# b- |, A$ z1 zend% J8 |( l$ w0 ^) q6 v& N9 H5 M' ^
0 k" o& D7 h5 m4 I9 ]' r
to do-business
! ~$ e0 X6 B6 E- U8 \+ L& P* s

& ?- f$ R( H0 k1 x
- Q6 k  ]# I  Y3 u: grt random 360
# W+ q' o  `% n+ V* v) |9 w* I: Q

+ t) T' H& B$ {5 W. E! o3 y8 Dfd 1
( s9 L4 l' }! `
! e6 g# ~' G8 v
ifelse(other turtles-here != nobody)[

0 d% [! _+ z8 I5 N3 l: d
" o3 ]1 S. @7 q; z% @/ wset customer one-of other turtles-here

, d5 u, x6 l/ {6 b4 h( y$ Y" F/ H5 Q, H. J: f3 A2 {
;; set [customer] of customer myself

; O8 l5 E- @1 T7 ^" W2 I# E* ^$ G' j6 c. _2 m
set [trade-record-one] of self item (([who] of customer) - 1)1 ?* P7 I) E" \
[trade-record-all]of self  N  S2 O8 z5 f4 m
;;filter [item 0 (? ) = [who] of customer] [trade-record-all] of self

. n! ^* q6 F( c! ?4 p) B9 w
, |$ _9 N2 m7 F8 N; y4 n. V* Tset [trade-record-one] of customer item (([who] of self) - 1)2 v  N. L7 n. L& K, a- z
[trade-record-all]of customer
# l' i  D6 N4 T5 ^/ @, W

7 U) i/ b# r0 kset [trade-record-one-len] of self length [trade-record-one] of self

' c* T% n- u# H. D" E9 f  |' B& }% L. I. j9 e( \* x1 f
set trade-record-current( list (timer) (random money-upper-limit))
& [5 _% Z% I/ o: P5 l' L* ^
, F+ r9 s7 H. |; v  H* U  C
ask self [do-trust]
3 @1 m/ q5 ?0 e' }4 G) E4 G1 i1 D;;
先求ij的信任度" l+ x; _( d2 _3 i* y
, d( q/ K" c2 c- L. a6 t; e; C: T9 k
if ([trust-ok] of self)
+ z- Y4 V: x$ z* {;;
根据ij的信任度来决定是否与j进行交易[# q& m# O0 _$ K) s8 B9 V7 X  h
ask customer [do-trust] if ([trust-ok] of customer);;
这里可能会用到myself) Z7 J7 [) z2 |: v7 _2 J

/ h, U  Q, u3 v2 R2 m6 }[

2 P* E6 S! Z' Z" d/ U& a0 o2 d1 Q7 k3 Q' q: {- U
do-trade
% M) _7 O! C$ c. o9 d" q
$ M* s# W  B( R5 s' Q
update-credibility-ijl

( \# B; q8 f9 `2 b: @2 |( N8 x3 b; C* ]9 w( P+ w- F; A: O
update-credibility-list9 i9 x  L0 q/ {  [: ?6 [" V. d& j

+ \9 u& |$ [3 P. c7 G& F" l7 C7 [( Z
update-global-reputation-list

8 K; S& a; p8 a5 t+ ~% o1 H/ U' |% C: [8 v/ w. C
poll-class

7 h2 z7 A. P: J1 B0 \
6 Y/ S0 O! B; E, Z# I" m9 t( t5 t8 ~get-color

8 o8 X4 ]4 M. l8 q3 A, L5 R
7 \2 ?. E# n- c, u- l+ Q]]
) o. C/ z1 I! O% Z' W
, y5 f2 Z, |/ r& S: S;;
如果所得的信任度满足条件,则进行交易& F; t* T) Q4 ^  c+ }

; @, ?1 q: Q; T4 N  _: y4 n[

2 _" w& A: R: b$ n! h; v0 A" c  t8 ^* g) s5 v
rt random 360

8 `) {! y& n* r% G6 I1 {( A( s3 D1 y$ b
fd 1
3 L" c" z5 n0 T1 A2 ], y. b: k
+ f; h" l6 h$ s8 U
]
* \8 L' x; O, B

# _1 |. @* @& xend
, V7 `1 Y3 H, h" x, n4 @: ^' K
; o8 j' I) Y* O1 I
to do-trust
7 y2 A/ ?- p1 nset trust-ok False' ^1 u' I- G- w) p- I

% u7 B5 x4 L, P/ R+ s

/ ~  w! ?+ @" ?9 p& C' E# Z9 ?' Dlet max-trade-times 05 J; X" Q& ]/ J4 V
foreach [trade-record-all] of customer [if item 1 (?) > max-trade-times [set max-trade-times item 1 (?)]]
5 V& t9 r' ^+ k, I9 k) @( M" l% F$ Ylet max-trade-money 02 Q8 S5 g# s: ~; y2 O5 A
foreach [trade-record-all] of customer [if item 2 (?) > max-trade-times [set max-trade-times item 2 (?)]]
9 S9 {4 _3 D5 Y9 q" m. ^let local-proportion sqrt((item 1 [trade-record-one] of myself * item 2 [trade-record-one] of myself) /( max-trade-times * max-trade-money))
7 c; K- k6 h: x/ @
% c  J; h7 U" p! W
- O8 m% u! i& Q) o! k+ _
get-global-proportion
0 o  ]; i% w! z5 K9 Mlet trust-value. K7 @$ {/ L6 s& j" Q$ g) f
local-proportion * (item 5 (last (item ([who] of customer - 1) [trade-record-all] of customer))) + global-proportion *(item ([who] of customer - 1) global-reputation-list)
4 m( p( F6 T5 g' n6 C' n
if(trust-value > trade-trust-value)
+ R, x4 T, m$ c[set trust-ok true]
# r% V9 w( R$ Vend
* M; ~# K, ?% t. P! a( o
. j) C" q2 m' d9 |' kto get-global-proportion
8 r2 r$ n* O" X. j: `ifelse([neighbor-total]of customer = 1) and (trade-record-one-len > 3)
; M/ w3 _; Z- t. O# L2 E[set global-proportion 0]
) f. b& z: u0 {# [8 e[let i 0
5 b/ a+ ?0 }" @0 S* q' k* B, @" plet sum-money 03 x& F" x7 f6 f2 r. m0 a
while[ i < people]
- T7 C' I# `* s% @1 _[
) S4 R- U; W$ d  K7 v. c! j& [if( length (item i2 I- ^/ }5 w6 _( s9 O4 b# o
[trade-record-all] of customer) > 3 )
& w+ E: _4 |( W& o7 O% _, I
[
' a& h7 C8 D  y6 Jset sum-money (sum-money + item 2(item i [trade-record-all] of myself))- e! _3 h- U: t$ A9 C
]( m4 }5 B: s4 S! G# v, D
]; N$ G2 b! o' D( I, U2 S
let j 0
" U4 s" o* ^# \% w6 q3 rlet note 0
) p  p3 e- f) Iwhile[ j < people]
+ d% `9 Z* h& c5 |3 D' X[
3 W6 z3 {. ?- ~9 @( s+ a' G( V( x; {9 H. Jif( length (item i# Q* ]2 r: @1 a
[trade-record-all] of customer) > 3 )
% Y) m' t1 Z8 ?! F+ e! x8 C
[. j) t, k) ~/ D0 a
ifelse(item ([who]of myself - 1) [credibility] of turtle j != -1)( C3 z" g) I* d1 p9 w+ U$ G
[set note (note + (item ([who]of myself - 1) [credibility] of turtle j )* item 2(item i [trade-record-all] of myself)/ sum-money)]3 _6 o5 ^3 V5 Z% l5 r* e  I
[set note (note + (item (j - 1) credibility-list) * item 2(item i [trade-record-all] of myself)/ sum-money)]
* ?! B+ J4 O8 G: |: U' V]
. \  [/ n/ R$ g( u0 y]. A+ B9 _3 @2 b. S: Y' A" }8 a
set global-proportion note2 a# x  S0 @" _( h/ B: j4 t3 ~) v* c% A
]0 m: b' Y; J: c2 t3 F! s/ T2 a
end
) `* f6 `3 D" ]6 @) L
$ F) R$ l+ J  a: j* Gto do-trade
  w+ n9 O+ j& G. {9 H;;
这个过程实际上是给双方作出评价的过程9 ^$ x( k4 v: y2 K- G6 v% X3 U8 a
set trade-record-current lput( random-float 1) trade-record-current ;;turtle 得到的评价
. Z& E/ f( E1 Nset trade-record-current lput( random-float 1) trade-record-current ;;turtle 给出的评价
7 o1 A9 D2 J3 m* E$ \set trade-record-current lput(timer) trade-record-current
4 g, P7 q, w% n( o) N% c+ Q' n% l;;
评价时间- {7 x; s  c3 b* {& u
ask myself [) H7 {, H% {, W  z  {4 q  x$ A
update-local-reputation$ d8 H. m) M& u, F$ _/ I3 d; o
set trade-record-current lput([local-reputation] of myself) trade-record-current
; }' y% d# c" v; w5 |" u$ B]
6 O( `& r; }, R0 K+ O  d$ |set [trade-record-one] of myself lput(trade-record-current) [trade-record-one] of myself
# |% D) {7 ]( m5 O;;
将此次交易的记录加入到trade-record-one
* p3 R/ t' M3 Eset [trade-record-all] of myself (replace-item ([who] of customer - 1 ) [trade-record-all] of myself [trade-record-one]of myself)
+ b4 I9 A# o1 |0 G( u# L- I6 rlet note (item 2 trade-record-current )0 |9 x" Y- H: `
set trade-record-current
) `" ?) H% c0 w7 U% Y(replace-item 2 trade-record-current (item 3 trade-record-current))

# t/ u$ Z  z% q& y! q/ Vset trade-record-current
2 [4 ]/ H2 c, M: q1 r2 n(replace-item 3 trade-record-current note)
7 D7 Y* @2 p" L) ^5 \
% H5 _3 t: K) t& C' k
! m* P& `" p# Q8 N1 n( A9 x' t
ask customer [) ^+ \& u% z6 \; l; \3 Z( E/ W
update-local-reputation
+ r; {/ \0 |2 M; k8 Uset trade-record-current
* C! S8 H" O( u8 J1 j/ [(replace-item 4 trade-record-current ([[local-reputation] of myself]of customer))
3 s. ~! k: ^: V: k' i# U. G
]
% J% }# o5 c6 }! T0 y5 M7 o) P2 N0 l6 P6 @3 O( B4 K, U$ o/ A
7 u5 d; U/ h$ e/ |
set [trade-record-one] of customer lput(trade-record-current) [trade-record-one] of customer
- k# B1 X  ^3 S
% x# S6 _1 ]5 n6 ~7 Y
set [trade-record-all] of customer (replace-item ([who] of myself - 1) ([trade-record-all] of customer)([trade-record-one] of customer))
# T; R" e! q4 w5 s% T" c7 B( _;;
将此次交易的记录加入到customertrade-record-all: i* D+ N0 f8 d* T( H+ a! n$ m* E& @
end/ B" F+ O; P$ o0 b0 t1 I  r
, U) g  b2 Q% H, B1 C8 m
to update-local-reputation& [. q& j" L9 [2 J$ p5 E2 w
set [trade-record-one-len] of myself length [trade-record-one] of myself
/ O% m1 W! c2 Y, \9 \) l
( \6 @7 {- `9 x4 K, m1 S
+ e$ o) l. b, n; O+ t( D% N; r;;if [trade-record-one-len] of myself > 3
/ J8 |% A% B& a
update-neighbor-total" y3 O" }1 d+ ?0 S
;;
更新邻居节点的数目,在此进行' @8 H6 `! j# O  O' _) \
let i 3' b4 B% ?$ D1 S9 j
let sum-time 0+ Y. L! z( N; Y* l
while[i < [trade-record-one-len] of myself]8 n% b' y4 L& g/ J) C
[
2 I1 d! o+ D8 y# d- cset sum-time ( sum-time + item 0(item i [trade-record-one] of myself) )- `! i* Z4 i, M3 B- a1 {: L8 M
set i4 t! {, j! u8 J8 k+ f
( i + 1)
3 }6 I* E! j$ O0 |  m% H
]  G$ ?8 d% F! N, L. m) Y1 m
let j 38 {0 M+ F# y1 A- @5 L! J
let sum-money 0  |6 F6 j% g" P& |3 x1 g$ a2 D6 C, G9 C
while[j < [trade-record-one-len] of myself]! y* H% |9 N) c+ [- x2 _9 E* q
[
0 H8 g3 n3 h- E- @set sum-money ( sum-money + (item 1(item j [trade-record-one] of myself)) * (item 0(item j [trade-record-one] of myself) ) / sum-time)
: q7 l0 r* O9 M- o: pset j# Q( {0 T9 B: ~# L. D
( j + 1)

1 |$ r$ O& ?2 K0 q], o. ^$ c, k5 y( A6 K: q7 k2 M  H
let k 3/ I0 d0 l+ F/ f% l) x0 I" [
let power 0
2 I; `4 R1 c' n: }6 r# N) Nlet local 0
2 j( n) ?& [$ N" uwhile [k <[trade-record-one-len] of myself]
2 \' w- X; ~0 z. V) _; B' ^  @[4 F/ t' U: `! ^: ]! I+ R, a
set local (local + (item 0 (item k [trade-record-one] of myself)) * (item 1 (item k [trade-record-one] of myself)) * (item 2 (item k [trade-record-one] of myself)) / sum-time / sum-money)
* K) i" l/ T. H! Jset k (k + 1)
: o9 |' z3 }8 G, Y5 J]
9 T! C/ v& p( X* k6 T# |  @set [local-reputation] of myself (local)
. Z. }6 D# m" q% B) L) ]; Vend4 J& X3 K; J! e# Z+ Z& N1 o. u
2 u7 a. X# p) z
to update-neighbor-total, Y2 \) O9 `4 J2 T
- q! R' @7 K5 Q
if([trade-record-one-len] of myself = 3) [set neighbor-total (neighbor-total + 1) ]5 `6 D( k( }$ z8 H7 C9 ~
' W. w2 }8 d! x% {

2 x# M, X: A! Z0 _8 H/ {5 Q' g" Qend
, H+ M* C( P9 |/ s8 f; k* M+ Q4 V/ a: B: }+ n" Z3 w" T
to update-credibility-ijl . ?6 K1 a. w$ n: o9 Y" E
" {: F- k8 T1 z  h+ p3 g
;;
思路:每一次,当一个turtle发和另一个turtle成功发生交易作出了评价之后,就去搜索本次交易对象的邻居节点,对这些邻居节点的评价质量作出评价。
  [) Q6 M5 E) Glet l 0
9 v0 k0 S  A. Lwhile[ l < people ]1 n+ r" R0 {1 m/ ]; \
;;
j的邻居节点的trade-record进行扫描,以对j的邻居节点的评价质量进行评价. u% f. {5 N2 V% U( ?* Y; Z, h$ A
[' F) Z  G+ u7 w
let trade-record-one-j-l-len length item l ([trade-record-all] of customer): k, D) B+ U. A! I+ A
if (trade-record-one-j-l-len > 3)$ v8 D! D" M2 d6 D* A" }& R- f
[let trade-record-one-j-l item l ([trade-record-all] of customer);;暂存那个评价质量正在被评价的turtle j的与ltrade-record-one
$ G$ o$ G6 H; V6 H" Plet i 3
/ [/ s+ S( X' C6 U- H: }let sum-time 0
- m7 b7 K# ~0 F% Owhile[i < trade-record-one-len]
  I2 x" ?3 Y9 f: C5 B  w: O[
* P5 r3 k6 i) V7 s1 [& `) fset sum-time ( sum-time + item 4(item i [trade-record-one] of myself) ); t* ~4 f4 M0 ~3 R" q9 s' v
set i
& _$ Z9 s9 Y  J3 Y3 z( i + 1)

$ |4 n2 e8 ], K) s5 t8 {) _]
0 U. X1 j' a" slet credibility-i-j-l 0
+ x6 F. ?# X4 n& i1 b2 T3 S4 y;;i
评价(jjl的评价)7 Q3 I! X! X5 O# E, ?
let j 31 ^# ?+ l  ]; C# C% J
let k 4
1 [% v2 [8 k$ u8 J# N$ jwhile[j < trade-record-one-len]" X3 e4 A: n6 |' B# n$ \
[
( Y4 c+ o$ o, j- o/ Y0 v$ m3 G8 ewhile [((item 4(item j [trade-record-one] of myself)) - item 4(item k trade-record-one-j-l)) > 0][set k (k + 1)];;首先要寻找在ik次给l评价的这一时刻,l相对于j的局部声誉
. p$ D( p* N" [% g; a1 Zset credibility-i-j-l ( credibility-i-j-l + (item 4(item j [trade-record-one] of myself)) * (1 - abs ((item 3(item j [trade-record-one] of myself)) - item 5 (item k trade-record-one-j-l) ) )/ sum-time)
" q0 G/ v$ q' t* g* Dset j$ S& ]8 a- h2 V3 F5 @
( j + 1)

  e" j4 d( r2 @) h" _0 o]
( Y9 `5 u( ^% [' f) Mset [credibility-all] of turtle l (replace-item ([who] of myself - 1)([credibility-all] of turtle l)(replace-item ([who] of customer - 1) (item ([who] of myself - 1) [credibility-all] of turtle l) credibility-i-j-l ))
5 O. y+ G- c, x8 N8 W  U/ J4 v6 V, K8 b0 |9 \. W* Q& C  [) B' j0 G' H% r

5 g5 d+ P- e) a" Nlet note ((sum (item ([who] of myself - 1)([credibility-all] of turtle l)) - 1 ) / (people - 2))9 h: Z" }- ]. K) Z
;;
及时更新il的评价质量的评价* o/ c4 h, {, L. w" x2 e
set [credibility] of turtle l (replace-item ([who] of myself - 1)[credibility] of turtle l note) ]! `( O0 y. ?  b, Y  u
set l (l + 1): L6 A- |" c9 t+ k
]0 v& Z3 s; o" F" Y% `
end; S7 V; m' U3 Y8 B' R4 f

) {+ @/ O1 X$ `4 ~& lto update-credibility-list
. z7 K! C0 K" v& Z. [) D" b( alet i 0
& k% h' O) ~6 H0 ~$ Zwhile[i < people]$ t, N/ ?' p; k( Y, `$ [# N
[$ r) V/ [  Q( P/ h6 z: ~
let j 0
- _5 k4 S3 G5 l* ~, l4 V- v! ~8 }let note 05 z# d6 l/ e8 U! m3 a% L8 f6 V4 O
let k 0
+ f5 c  u4 d6 G7 ~7 B5 i;;
计作出过评价的邻居节点的数目; \) b2 t/ s" L1 I- P
while[j < people]
, B. ~  F; |& ^" B6 M[( b+ W9 y% t# m, o
if (item j( [credibility] of turtle (i + 1)) != -1)
2 v, }$ h# ~6 Y. R; j7 l  A;;
判断是否给本turtle的评价质量做出过评价的节点
" v; N& g4 N" l0 M9 r$ E3 W$ S5 I[set note (note + item j ([credibility]of turtle (i + 1)))$ q( z8 r* k3 x" _  V
;;*(exp (-(people - 2)))/(people - 2))]
8 `1 s8 u2 T* ]& Y4 D
set k (k + 1)
& p0 s8 N3 O) X1 Y+ `7 g/ r1 J]
0 a/ l* m' T2 D0 G2 }1 ~; ?2 g1 sset j (j + 1)
( X6 O2 j% S- G) f" Z  z]# v0 K" u- {. C" c! x
set note (note *(exp (- (1 / k)))/ k)
2 {2 Z' I; J/ E8 i: B4 w2 S, rset credibility-list (replace-item i credibility-list note)1 j- E* d' o4 v& S; j# @- `
set i (i + 1)
1 J0 s8 f- x3 m% L]
' X7 p; U! E9 `' J; qend. l5 _5 ^" ?- R; b1 `! A3 A. T

/ e0 v  z/ c; @9 D$ ~5 a% E9 C- Xto update-global-reputation-list( B, S$ g6 Y; i% H
let j 0
' I/ ~6 l* r4 \+ J& [while[j < people]" x+ @: A5 \2 ~
[0 X+ l* E! Z( q/ o: b; m3 p
let new 0- V. M# O) ]6 a2 z6 t' ^- b! H
;;
暂存新的一个全局声誉
; D; |0 i( ]' }0 ^* ulet i 0# H6 J; X) B- g3 a
let sum-money 0+ N, m8 ^' R9 w$ o
let credibility-money 0
0 {4 _  ?5 t  t& G6 K  `while [i < people]
2 l! X, S+ {1 G5 \) M: H9 f3 t[( X6 J: l2 c8 [5 T7 K
set sum-money (sum-money + item 2(item i [trade-record-all] of turtle (j + 1)))
/ }7 Q5 K( N/ R, `" \  |set credibility-money (credibility-money + (item 2(item i[trade-record-all] of turtle (j + 1))) * (item j credibility-list))
1 ^& c' N& X: `/ g7 jset i (i + 1)& L, g5 ]8 U/ [2 }- c$ x4 T
]
, W- `1 s& h( z: Q0 hlet k 03 {( }' h  o* ~4 j. ~6 D: B/ k- S
let new1 0
. Z% G. h7 H% L, ~0 B- u8 M9 z. ywhile [k < people]" O! l3 z: u  o& j
[
& L- N' m0 M4 \# d; m* W2 f  j8 N2 mset new1 (new1 + (item k credibility-list)* item 2(item k [trade-record-all] of turtle (j + 1))* (item 5 (last (item k [trade-record-all] of turtle(j + 1)))) / credibility-money)+ y1 a  D  Q$ @  |/ @% |
set k (k + 1)3 Z5 {& F' W$ Y6 ~! p2 Y" F! t
]) U: `8 ?' ?( v( B( _7 m. ^1 k
set new ((exp( -(1 /(sum-money * [neighbor-total] of turtle (j + 1))))) * new1) 4 a6 U0 k" O* K6 u/ L
set global-reputation-list (replace-item j global-reputation-list new)
( f/ Z  F- p3 L% N! b0 u+ J# hset j (j + 1)
7 T+ [9 O+ R7 M) }]
$ ~! Q3 t' N0 F- j9 g$ t9 `end9 f0 J$ `3 o  r: A9 K3 r- M0 ?! I

8 ~& e, v9 j! }( C! o4 ^5 H# g# h# I& r' w  j
7 n8 Z+ F" F7 @0 d( N* Q# y8 M
to get-color- Z0 \. l* V2 T" C: ]& \) a; E$ F- _
% `9 K- i9 _- F, j+ J& R( l
set color blue

( o( Z+ d  q" p$ hend
/ h! S0 P2 ?# X3 Z/ u* x; c2 ]5 A; p+ J% {0 P* n4 N8 \1 g. B8 U1 k
to poll-class6 G- m0 e6 b0 z6 v: A
end  y4 {7 b! D( T4 `" p8 a8 l

. A: r+ ?  j: Ito setup-plot14 L. t! ~2 n6 ]0 m0 `  G9 E

6 c% Z5 g" Q. W1 Q- Iset-current-plot "Trends-of-Local-reputation"

. t: k0 R. x: T; e5 ]( L
& ^& i6 l  f% C% Tset-plot-x-range 0 xmax
8 m# T1 W3 q/ y5 c' l. d( m

1 w: ^3 h3 P$ {, b* B( c* Fset-plot-y-range 0.0 ymax
8 ]5 n. ~( @9 w( s- ~6 ]& F8 Q% ?8 l* n
end
  q1 e7 X; J, h5 n5 Y
: t7 ^2 B% ?2 m) W/ H( Pto setup-plot2
" |. X$ \' ^% c/ \/ o: s! i( X3 {5 c
set-current-plot "Trends-of-global-reputation"
$ S( X8 J& i9 F% ]: w( B
/ i+ G: J# Q$ [; L
set-plot-x-range 0 xmax

2 L/ Z1 x) W2 m3 p0 i" d
& x2 [# A8 S( S. z9 Q7 uset-plot-y-range 0.0 ymax

6 H# b- o5 _" [8 |& ~end' f; M  S6 t$ h8 y

0 ?! J0 ^' g7 r' n6 m! o4 W$ Cto setup-plot3" r! Z  U! ~$ J7 H# N; r) _3 H4 |
9 |3 t; E, t  b3 Y7 ^( M, F
set-current-plot "Trends-of-credibility"

  G% x! }# e% J
( E2 F* T. T2 n6 }set-plot-x-range 0 xmax

' ~2 A) k: m6 }8 Q( D8 {) F+ v' u, L0 R: Y) j
set-plot-y-range 0.0 ymax

( l1 \: \& r; j. e4 l+ bend8 J" Y% K" B  h$ e
5 v& y  _) G: Q9 L
to do-plots
& }+ `4 W9 s9 P5 rset-current-plot "Trends-of-Local-reputation"
+ c) H9 b9 T% x! Y- zset-current-plot-pen "Honest service"8 i: w. J1 I; L/ _) s6 R2 f7 `
end* m, p, O& g( Z" @# a4 P( v, p: K

$ m' O4 v+ c) D. c1 Y) H  c[ 本帖最后由 Taliesin 于 2008-3-19 12:45 编辑 ]

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发表于 2008-3-19 11:33:07 | 显示全部楼层

有点困难

没想到挺复杂的,我去问问师兄们,不知道你是自己建构的模型还是其它模型的改进,我试了一下好像setup都有问题,别着急啊,呵呵 。
发表于 2008-3-19 11:34:29 | 显示全部楼层

还有啊

发表于 2008-3-19 11:35:59 | 显示全部楼层

还有啊

能不能传nlogo附件上来,一个一个敲太累了,好长的程序啊。
 楼主| 发表于 2008-3-19 12:47:57 | 显示全部楼层
嘻嘻,不好意思啊,现在把附件加上了.1 F' D* B8 Z& `" w+ h2 q$ H
. D; w& l6 j! q# n0 U0 \2 I
这是我自己编的,估计有不少错误,对netlogo了解不是很深,请多指教,谢谢!
发表于 2008-3-22 16:55:16 | 显示全部楼层

程序公式

我问了一下,只是从程序角度来分析,是跑不起来的。如果参照你建的模型(公式),可能会有帮助,我的邮箱是wjcpcahu@126.com.方便的话,看看能不能进一步探讨。
发表于 2008-5-19 18:02:44 | 显示全部楼层

运行不了

提示custom无值,这是怎么回事?
发表于 2011-4-10 14:42:01 | 显示全部楼层
好高深
发表于 2011-11-7 11:36:13 | 显示全部楼层
为什么大部分的帖子的交流都止步于2008年,从08年到现在好像已经很长时间没有更新过了啊,为什么呢?
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