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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:9 d6 E% d" q/ d6 P1 Y
to do-business " E' E; m1 }) o4 c& T
rt random 360
( O7 c% L0 T8 L7 i  R! F fd 17 r5 w5 s0 o9 W" K0 J
ifelse(other turtles-here != nobody)[9 B' W" E0 U2 x' i3 Q3 c7 ?. u
   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.
0 X; Q# x! f! H, ?   set [trade-record-one] of self item (([who] of customer) - 1)  [trade-record-all]of self      O4 [' n! s$ g4 O
   set [trade-record-one] of customer item (([who] of self) - 1)  [trade-record-all]of customer
4 Y+ a5 g1 p  S+ ~, H9 ^   set [trade-record-one-len] of self length [trade-record-one] of self! f% _* f2 W' Z$ k7 O, L
   set trade-record-current( list (timer) (random money-upper-limit))) ?/ }; f: H5 u* |' w* C& W

1 G6 K3 M4 e. o问题的提示如下:  S, o7 E+ A2 t  Z+ p5 h
6 ?! B& c" V/ C5 L) r# v: f# O
error while turtle 50 running OF in procedure DO-BUSINESS
4 R3 J# |  i  ]) U  called by procedure GO+ y5 O/ c) U  ], K+ J
OF expected input to be a turtle agentset or turtle but got NOBODY instead.
  a- d. T* k# T' i4 Q
(halted running of go)% s1 ?% L6 B$ K+ h

$ M% \( |' X* m' f* d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~~* J# r% }# ^- l! y$ q/ T% W
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
- k+ t# |$ F6 T5 W/ p# ]globals[
0 e1 Z1 H7 k& h5 `( nxmax
" M& }  {; ~. _+ t- Bymax  W" y. s% k0 y8 \
global-reputation-list
% E! O& G4 I# l
4 g( B* i1 o( s- {8 l;;
每一个turtle的全局声誉都存在此LIST% X) P( ~& r5 J: `7 z
credibility-list2 ]; {2 q- X4 Q
;;
每一个turtle的评价可信度
+ @( D8 c! y- Z- _4 Whonest-service
& E: Y) D4 _! c) T0 `+ @7 E9 tunhonest-service
; ?$ m2 t- \, W- doscillation
4 P; l" K1 a" e, }- V. w- |* {9 Brand-dynamic; i' a1 k& u- p# g" J
]
6 m/ o1 T. N/ M/ ^0 I* {0 O4 C3 |; y# B$ R5 |! ?  }; O
turtles-own[
) U4 M7 g1 H( [trade-record-all8 U7 [. Q2 P. _2 J, D: k6 V, a
;;a list of lists,
trade-record-one组成
& }! @1 {; g% M" ^trade-record-one
# P) z1 v/ S) |5 W' P+ B;;list,trade-record-all
中的一个list,作为暂存用,记录两个turtles的交易记录5 ]1 D; y( I4 u1 n2 a3 ]8 M( w& a

& ?7 e9 x1 t/ `- H" j0 `;;[
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]]
  u& Z3 W) _/ [, }trade-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]" A! F% c( K( [, Z- X0 C
credibility-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list. Q* T' B7 l, i3 M$ w
neighbor-total
1 {8 \( d9 L' {0 I4 |/ c8 S1 h;;
记录该turtle的邻居节点的数目
0 J" Z- {* j4 @, y4 gtrade-time
3 B' e/ U2 X- y;;
当前发生交易的turtle的交易时间
- P3 \- r. M2 T/ Lappraise-give
" m# }: s) r. f" w) m;;
当前发生交易时给出的评价% V. v* S- y8 [# K) M( u$ p- Z
appraise-receive
7 s7 b/ `( a4 d;;
当前发生交易时收到的评价
7 s, b0 Z& W8 l& Zappraise-time
0 Z- f1 }" U! o4 b3 u5 X;;
当前发生交易时的评价时间; |1 i* x! f3 Q. I1 b
local-reputation-now;;此次交易后相对于对方turtle的局部声誉9 z, S' t* B- C; J1 C9 i
trade-times-total
# a9 l2 Y/ N, b;;
与当前turtle的交易总次数
1 x2 \9 s; a0 j! _* rtrade-money-total7 V0 V( ~' Y9 Z# v4 Y- \* x2 w
;;
与当前turtle的交易总金额
- ^5 m% w9 t! nlocal-reputation/ n( ~5 v. r% U
global-reputation+ e4 s0 N4 f# N" ?3 V  T7 G9 D
credibility! ~- P5 h( i' r  R& `6 v
;;
评价可信度,每次交易后都需要更新
6 A  J! k- ~0 F; d( j" Z0 [* {credibility-all
3 P+ L5 v6 ~  u# {;;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; f+ L8 r7 @' ?! Y  d

$ s( i% y  f% i3 w! j! @4 g8 ];;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
; g" S7 g$ P  O( I$ ocredibility-one
9 y3 M$ W' F8 i( e5 p+ Y; ?* ?6 Z3 g1 M;;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. h! L$ w) t) K( t5 d$ O4 t. q: g3 M
global-proportion
1 _1 C" m6 E1 z7 c  {/ h; g- _customer$ r& q! e: y; \2 k+ Z1 G
customer-no. a- E1 F* K+ Z
trust-ok6 q  J) a, L3 w, l
trade-record-one-len;;trade-record-one的长度; i# e0 T3 M0 x/ r2 O7 d6 H
], A! u" i" K. Z8 S+ g, n3 g

! B1 G1 l$ V8 }5 A;;setup procedure
1 a1 x* b1 e( S; c
; c; X! h! K- \1 r+ }6 Sto setup
, `8 v4 r: z* n( o4 Y
+ b4 t. m& R8 R3 Uca
) D1 n4 m  N4 T# e0 o# v% F

$ |0 H; Y: Q7 Z: j. rinitialize-settings

5 d1 J7 E8 J9 a2 Y* q5 ]1 r7 @8 W5 Q5 M! ?
crt people [setup-turtles]
8 S' {" u# m8 \) W' Q  _: L6 q

6 K: N- m" x1 P0 [1 ^) sreset-timer
; M' }% b# x7 I& b# ~
4 B9 h: S/ ~4 ^/ k
poll-class

, C- S& \7 l9 i& O, w! b+ \! V, K6 X0 q* {& k% e" O
setup-plots
+ |9 b" t% m' w
4 S- m# n" H" s4 F" V. l6 @
do-plots
) [5 e; h* |* }6 o  ^7 a% ~5 S- {
end
0 {4 U: k  e* G) A
$ F$ ^, S. I+ A9 r1 yto initialize-settings9 @" p$ L) v; S2 m/ B* a
& ]3 p% Q5 R9 z5 U
set global-reputation-list []
5 H7 g1 z7 s4 H* `( L

$ p$ [9 s  k! r& Y, X. q% Lset credibility-list n-values people [0.5]
  ]5 t7 I( U: s* d, [5 k

+ ~4 H. P$ \4 r. f; |( Dset honest-service 0

5 `  k2 R4 h. _" W! D3 ^9 b' p; E4 {
set unhonest-service 0

0 U5 U' d( ?1 x) L3 i
1 N, I1 B7 g5 w! |  Dset oscillation 0

1 n3 t- U$ {5 V# B
+ p3 c1 X+ c6 f  c8 Sset rand-dynamic 0

& |/ T9 b5 Y3 Z/ oend! Y5 U( _5 ~9 v4 d& N! T+ b

( M7 d5 U2 t; p- [0 X9 ]to setup-turtles * e+ y2 s- }) {
set shape "person"
1 n2 I; Q, B1 H/ A2 Z+ q' @3 K2 k; rsetxy random-xcor random-ycor
5 j; X) x9 z+ E3 p8 v, m* m: mset trade-record-one []
/ M5 [# u" g4 F/ ^5 V

% I3 R* V) `/ T" Aset trade-record-all n-values people [(list (? + 1) 0 0)] 9 F7 G; B. K& k& E6 z0 @4 B: R% s) j
1 ~5 i- [5 l+ |2 u  A$ @/ S, b
set trade-record-current []
8 A8 }" R5 }, ~) p0 N4 bset credibility-receive []
  j6 \" P" U* B2 }+ m8 o0 Oset local-reputation 0.5
: I8 v; m; _1 m8 s. B8 d, Wset neighbor-total 0
: Q2 Q% b) Y  o8 h8 Q% N, dset trade-times-total 0/ }, n1 h% c0 H% f- S
set trade-money-total 07 V2 L2 u( i* ^' W
set customer nobody2 i6 X1 i, G! Y5 d; b0 Q/ D5 K
set credibility-all n-values people [creat-credibility]
5 @- u8 U* E7 y1 Y  Dset credibility n-values people [-1]. ~# ~1 j; r' s& s
get-color; w. `2 X) d5 X$ A8 K
- o' S% p: p7 u& M- G  K* e# d
end
$ W) E( k  ?. t# @: }' j5 s
* O( X" F! O$ D  mto-report creat-credibility( W1 g# @, S$ {$ x  P# P
report n-values people [0.5]  i( l& B& ?9 g7 a+ Q5 {
end
. X# x8 _: y: Q/ f
  J* C; C0 B0 s4 j4 Bto setup-plots( O  L& o) w3 n* r+ Q9 I+ y

2 n$ L8 q% Q9 Y/ X" C+ v  s3 ]set xmax 30

3 Y) ^6 U6 P! V1 Q
) K7 y: z4 b! m; rset ymax 1.0
! E; K/ i' ]1 M
" U, M6 ]0 M7 X- c8 s& s
clear-all-plots
% k0 Y. N4 {6 L4 E- }% W% y  I

# O- |8 r1 K2 Q5 ^! o: K9 v+ Vsetup-plot1
: |1 q& b5 t" f/ n/ _8 x

* E  `* C- b  R8 G  jsetup-plot2
& n9 t$ f0 ^9 O; B

# _5 l, k4 K) @" s; D8 Msetup-plot3
2 T& E, Q: J3 R7 y2 g! N5 `; S
end
- |7 N3 e. Y1 a
* m( x5 i0 U  W+ i;;run time procedures
& H* D1 v3 T' d0 |, Z+ s' w$ ]
7 M% q( `$ @  U' `9 g: L- Lto go
! D" J. u" z; O# H
7 L  [3 i9 u9 D( t2 ^# Q( ^ask turtles [do-business]

3 n' U3 S2 Y3 Cend/ W/ U2 G- X2 U2 Q- p3 U* ~) v- n2 h; g) L% u

7 {/ e' o: `+ Z) Mto do-business ( I/ A! {5 D/ a2 p9 S# ?
/ i( ^  S- a# U  B; O+ x. N
. i' r: r# I& B  q# `) M6 b' _
rt random 360
' Y0 Z# s4 i  E  }0 F1 M7 a! Y

% U$ F+ q5 [' qfd 1

3 w2 g: h) s3 V
. @" \0 P3 W3 e8 y/ Y  ~2 ^ifelse(other turtles-here != nobody)[
8 R( ^4 {1 j5 H

- q* g# s" X1 ]- Eset customer one-of other turtles-here

0 X" j- b' y$ N, K; l+ F7 [, |- T" _  p6 d% L
;; set [customer] of customer myself
# m$ n$ A  T8 Z: E% e) z" d
$ v" G; v  g  \( U, ^! d# u  ~
set [trade-record-one] of self item (([who] of customer) - 1)& _& x5 |, o1 c0 s: S: G( ^
[trade-record-all]of self2 D6 ^/ W% M% J8 k: D' m
;;filter [item 0 (? ) = [who] of customer] [trade-record-all] of self
- c) m0 X6 G, F
  v$ Q9 O) @- ~3 F: d2 p& ^9 m+ a
set [trade-record-one] of customer item (([who] of self) - 1)
) f" W) \( @2 T+ q% X5 d3 o[trade-record-all]of customer
$ Z% W6 t9 C9 {
+ ^% q$ h& Q  b1 \  Q4 ]7 s5 \
set [trade-record-one-len] of self length [trade-record-one] of self

- f" p# l4 u8 h: ~% t3 t5 A( j  f# V! [* ]/ ]6 E4 x/ X
set trade-record-current( list (timer) (random money-upper-limit))

: {( L. g  j& O" p; B1 E( U) v0 H/ A6 I( a/ ~# q) M
ask self [do-trust]
$ X* Q. q& ?* c6 \;;
先求ij的信任度
; w% H: S' L* F% y) E
5 Z4 G, H9 U! ~. `; M+ }% @if ([trust-ok] of self)* C5 @3 E4 t0 a% G. k9 r) W
;;
根据ij的信任度来决定是否与j进行交易[- g$ I9 |1 o# D/ u
ask customer [do-trust] if ([trust-ok] of customer);;
这里可能会用到myself0 C6 H; a7 v3 ]" ~

" g( @* A* T1 a6 |% k6 i8 r% w[

- @1 D" M* u9 z0 k7 N! h( d) K, E
1 p5 y9 Z+ p& ^; K2 @& F5 Ldo-trade

3 d5 b! F. F0 y7 O5 p* Q1 y/ j  y* S& z! ]
update-credibility-ijl
4 y. H. n8 P- U% j

( U. W$ b7 y0 _/ s# W! cupdate-credibility-list+ o: ^/ B4 O8 I+ S8 m
* S4 V0 w* m" E7 Q, \' \; m
' |* K8 C. f& W  S' T6 Z/ }
update-global-reputation-list
# r2 `! Q/ F0 G: ]1 K  E
1 p# U  y; J. }  L* X
poll-class
9 T& |% K' l9 W1 S
( D3 r" c+ a! a' D  G  z
get-color
9 Y4 c% d4 s7 x" ^9 D- M& ~
+ s2 Y/ [$ a& T  j4 k0 X
]]
3 s) r% J' U! q& m; \0 T
& W2 d. ?! ~3 f6 o;;
如果所得的信任度满足条件,则进行交易
0 G; x" I9 t# b; W- t6 ?- t; a5 N; D5 A" i* o8 b& ~
[
  i. E) I& X% c% t  [* l1 w

4 U$ s* R' Q+ @5 Zrt random 360

  O- ]0 E2 R& R6 T9 U8 q% D
1 T' E1 D: N* c5 o. Kfd 1
& O% ~6 L* T. E7 l
- q/ \. x* Y( F! ?6 B  i+ K
]
) U1 _4 D. [3 }6 Y

% R( l+ D6 G1 P$ Z# eend

! K2 M2 i5 P, I1 }5 w6 `. z( E$ f2 w, b: }
to do-trust 6 P" K* N+ [2 u, S* D3 ^
set trust-ok False
. |6 |; r( N" b+ O: w0 n9 U# H: K! \0 L. @" k* Y8 f  o

) c* v# }4 n! ~  X# xlet max-trade-times 0% u1 F2 `# s5 U4 T* h  q5 k3 [( T
foreach [trade-record-all] of customer [if item 1 (?) > max-trade-times [set max-trade-times item 1 (?)]]
3 y; O1 }5 @2 X8 i, Z0 p5 Llet max-trade-money 0
2 W, J, o/ m: o& L- p9 S/ eforeach [trade-record-all] of customer [if item 2 (?) > max-trade-times [set max-trade-times item 2 (?)]]
  g6 g7 _9 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 K+ @0 @0 E+ h1 k( W  a
% v" l5 o6 y  W' Z. }: B3 j

; y5 N6 T, Y0 Y6 [6 M  }get-global-proportion0 \- d1 {/ W& t# a6 k
let trust-value% s8 b9 j# q2 M( x3 Z1 R- z0 j
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)

/ l. Z  U- C/ v% M; w. Dif(trust-value > trade-trust-value)
5 ]6 B" a! w1 \7 @/ j" {[set trust-ok true]9 V4 Q/ X, `- N7 X! {# Z
end6 [. m# h2 C; M
! _. S$ Y6 h/ h# _& o1 Q
to get-global-proportion
' N3 {. J$ s/ sifelse([neighbor-total]of customer = 1) and (trade-record-one-len > 3)- i  V  f4 A$ A7 q: A1 P6 i6 i2 D8 h  B
[set global-proportion 0]
" l* }3 f/ k5 @, G+ H[let i 0
2 o# G: Z" w( D0 o. H/ D9 ], Olet sum-money 0
$ T! l& ?. P3 r" W% cwhile[ i < people]
" }9 C) f& v) M; x# ]: ~5 _8 ?/ c' f7 X[7 A+ l: A3 }: w) P" o! [
if( length (item i8 b5 f% w- V* A" [
[trade-record-all] of customer) > 3 )

  X, Y, g3 j) v8 r* o3 [) g[/ d1 d- R; q  p, n( c$ r
set sum-money (sum-money + item 2(item i [trade-record-all] of myself))4 r4 _. p/ w; A8 i( O
]
3 v! M* H' i5 H]" M, I2 Z; B' j- s# K
let j 0
( u7 W: y7 B+ t( [# F7 alet note 0. m, t" o7 ?, g  _1 A' U6 a% c" j& W
while[ j < people]
! @/ _  y" {& q+ [[# x* h) X( n; \: u: G5 u  b2 D
if( length (item i
/ Y& J0 b; Z# A' R: n$ c[trade-record-all] of customer) > 3 )
: o8 X( W2 V' J
[
: i$ h; F5 [! Q! F$ Z5 F: U- p' X' m% vifelse(item ([who]of myself - 1) [credibility] of turtle j != -1)
* Z7 s+ q$ D- T[set note (note + (item ([who]of myself - 1) [credibility] of turtle j )* item 2(item i [trade-record-all] of myself)/ sum-money)]2 y  V8 C+ E5 r( O
[set note (note + (item (j - 1) credibility-list) * item 2(item i [trade-record-all] of myself)/ sum-money)]2 q! Y5 ]) r) @* L& v; t% v
]
( Q4 t" L0 C  w) {; ?]* S$ A" t9 k# k
set global-proportion note2 }& m2 Z/ {) V# R
]
' k- d# H# H0 S5 x. Y1 Aend
8 D4 q: x' W3 X% u- e: f: `  @; g% p: ]( P, s% s; u- ?
to do-trade
% V+ m: I3 Q. M$ J+ g* H6 i;;
这个过程实际上是给双方作出评价的过程5 s6 n2 ?( O- G9 }' s# I
set trade-record-current lput( random-float 1) trade-record-current ;;turtle 得到的评价
- u8 x' V* z. Lset trade-record-current lput( random-float 1) trade-record-current ;;turtle 给出的评价( o4 a; L/ A6 {2 [* x+ ~
set trade-record-current lput(timer) trade-record-current
4 z$ F# Z6 i; ^2 K;;
评价时间
% |* ~. I; Q4 D, wask myself [1 R) V) x5 W3 l  t  s- y; G# O) K
update-local-reputation
4 U% Q2 k' e6 U0 m1 \1 Bset trade-record-current lput([local-reputation] of myself) trade-record-current
& w  D2 |  a! k( D5 c]* }' V* x* n: H$ ?
set [trade-record-one] of myself lput(trade-record-current) [trade-record-one] of myself& z' J( D9 S, h) Q5 f
;;
将此次交易的记录加入到trade-record-one; }8 K( A. i8 B3 Y( G
set [trade-record-all] of myself (replace-item ([who] of customer - 1 ) [trade-record-all] of myself [trade-record-one]of myself)
2 B# l* ]  s2 v2 vlet note (item 2 trade-record-current )
5 O0 T8 J# b0 s4 S1 lset trade-record-current
* U$ z* k, g' i, C4 q- F! P6 Y(replace-item 2 trade-record-current (item 3 trade-record-current))
* n) V$ F3 E) \1 t
set trade-record-current. g  k3 E/ k4 Q- Z1 g1 W* I
(replace-item 3 trade-record-current note)  l; M7 K# X' I' x

  Y* ?3 x- A: \9 K: H( N% V
; u( h8 {% i$ v2 Q' H7 H
ask customer [8 E& X2 y1 r5 ^
update-local-reputation
- q" {1 y6 V" I* w6 U9 Pset trade-record-current4 z5 Q- }6 N8 L" H& E; ]+ n
(replace-item 4 trade-record-current ([[local-reputation] of myself]of customer))

6 l6 n. z  a" U; E0 z]
$ r! O/ y7 Z5 J) L7 J
0 M1 {; m( \7 s" d1 j: N! r
5 p& S  h9 B7 O9 \2 s
set [trade-record-one] of customer lput(trade-record-current) [trade-record-one] of customer8 k0 q. P( N1 T6 @
8 N: X; m2 U' o6 f2 c
set [trade-record-all] of customer (replace-item ([who] of myself - 1) ([trade-record-all] of customer)([trade-record-one] of customer))5 h6 ?. |5 r9 a9 R- r
;;
将此次交易的记录加入到customertrade-record-all
6 W$ ?/ g/ W' K  e$ xend4 w7 Z  s' r  e- E+ m; F8 Z! k$ N* M
  V! Z5 Z3 Z7 X/ z! F
to update-local-reputation
, {, A; o# H/ Z  \+ t  G5 r# jset [trade-record-one-len] of myself length [trade-record-one] of myself% p' o5 \6 f. `" U1 M# V9 w

# p# f  S& s, A  B8 G( X; w$ v7 a
;;if [trade-record-one-len] of myself > 3
& B# E- ?3 X. L1 L- H
update-neighbor-total! _7 {1 o9 T8 H, D- g' Z/ W" Z
;;
更新邻居节点的数目,在此进行
5 x1 Z  l9 j: Clet i 32 }8 L# o9 o, w; P. F  ^3 m1 |
let sum-time 0
) v( P! f+ h7 T7 u! n: mwhile[i < [trade-record-one-len] of myself]
5 R: P9 _  q4 m) C[
) c9 r" \, \. `' mset sum-time ( sum-time + item 0(item i [trade-record-one] of myself) )* x* R) [5 h* v6 |. n/ Z4 V
set i
7 p7 v0 d- L- d+ F; }! t; o( i + 1)
0 x+ R4 p* X/ m% E. p
]; n- T6 F4 m5 P" b* B3 C
let j 3: p% O) e" n7 y7 h1 A
let sum-money 0
7 X% Z. }  J! v( `; gwhile[j < [trade-record-one-len] of myself]- l& L' t( b* u8 D: P- S
[8 {# S, M: A9 M; U; ^
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), u/ p( m* Y; N* p3 U& i& X
set j
$ O; D. \6 t0 ^* R1 }& m  p( j + 1)
" Y, A! e+ T: K) ]' {( ?
]) Z1 ^$ Y1 E# `/ D5 Q0 u3 O
let k 3
0 Z& j0 v* B7 C( [5 \4 S) A, ~let power 0
& E7 P+ {7 u: dlet local 0
6 E7 O7 ]) N9 Y! h2 o; T% y  Nwhile [k <[trade-record-one-len] of myself]) F+ e( E7 R" i" K4 O* R2 T# ~
[
) |; E2 U$ k# d" \) [: }. y9 {4 D# L: p9 ^, Sset 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)
6 Q/ k, ?2 x1 ?; ]& Sset k (k + 1). w3 r  i" v1 C6 {' p7 Z
]1 S; V1 }/ L4 M( o" A
set [local-reputation] of myself (local), e$ @9 J, e  A' {
end
7 D; Y( k& N$ e  H8 z2 L3 h: F4 {8 Q2 |7 o( F; M
to update-neighbor-total, {; t1 K) k" t

  P5 ]+ j, p/ M3 T$ e( pif([trade-record-one-len] of myself = 3) [set neighbor-total (neighbor-total + 1) ]/ k, v% B  ?4 w! `: i0 k

) Y. f# \* j4 O  E8 c
' {4 v0 \, C, [: V, M' ]
end( n- j5 y$ t1 `; ]

2 H) ^  b6 ]# Z; Oto update-credibility-ijl 9 u# E) |% ]. K3 k3 H1 a, K
9 ~2 c* q* g! a2 l# Z4 B
;;
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。
, m9 T0 n" E" [' S3 B4 clet l 0
. [9 j5 g# |$ r, T+ E* r1 u, Q5 Bwhile[ l < people ]4 y' ~1 |  J+ _
;;
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- r5 R9 s, ]0 N% g2 x" Z2 h
[
5 z' |9 d3 z( i, `/ B0 _$ Alet trade-record-one-j-l-len length item l ([trade-record-all] of customer)
' y! ^/ X1 R+ e% p0 sif (trade-record-one-j-l-len > 3)+ W/ E$ R" w) r3 p! h' A, V1 O
[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
7 s! X( {: c- |let i 3
' s; C* \6 H) h0 D* }+ B! x7 X# ylet sum-time 07 u/ k; Z& x* f- e
while[i < trade-record-one-len]
! ]7 U, G6 f  h/ d' d[, n, e: x% n! q: V  L
set sum-time ( sum-time + item 4(item i [trade-record-one] of myself) )9 S* B/ d; f% }: L' L! C" c
set i- [6 i. y9 k( d# v* o- z7 C
( i + 1)

+ e$ D9 J8 Z  ^  w]* k7 |2 {! i" X9 z2 y' N+ A" W
let credibility-i-j-l 07 _! C: u  P" S" o) F# n
;;i
评价(jjl的评价)" X9 W) Q2 P2 G1 u. m
let j 3
2 m; `$ t* j8 V' n& b- I1 K' zlet k 4
7 U9 R% g& r: B0 Q, Nwhile[j < trade-record-one-len]
6 g, d# V( q+ m9 p/ o; P  i[; e+ Y# L4 P) V% j) w: G. L
while [((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# a7 U% T; S$ e( K" F4 D: ^6 I2 A
set 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)
, y: W) [# {2 J7 g. O4 v- Hset j3 v" k  M( d& j+ U0 B8 U/ f
( j + 1)
4 Q, `$ I" w( d) ?
]/ {+ {9 e, U# ^+ k! l6 S$ n
set [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 ))
- r! q3 @" l5 k7 v" C# O2 W, @, O2 R2 t  x. O3 u* M! @9 x/ k# @

, z: u7 n' E8 T. L; M$ blet note ((sum (item ([who] of myself - 1)([credibility-all] of turtle l)) - 1 ) / (people - 2))' t& {! ^  \& {$ x5 \
;;
及时更新il的评价质量的评价% f3 o; _0 Q2 j# H
set [credibility] of turtle l (replace-item ([who] of myself - 1)[credibility] of turtle l note) ]
9 C3 G- l5 D  Bset l (l + 1)
; d- D6 q' G/ L$ d$ F+ F( [4 J3 Z]
9 p8 N- `  h  G  wend$ j# P/ p! q" B2 r8 p

4 `6 {! c) N" Y6 X! C+ Oto update-credibility-list/ n$ b& @0 m1 ^
let i 0
8 @! T2 y5 U( S/ G! gwhile[i < people]$ u8 K4 S% h  R* N# p
[$ ^- y3 @2 C- w
let j 02 n3 Y1 m2 f2 _5 Q* g: e* T% W
let note 0: A( O! Y% N& `) r6 E3 t* [
let k 0
4 ?" F3 u% H- w/ [: I- y;;
计作出过评价的邻居节点的数目
; y' y3 d& u3 L' mwhile[j < people]9 W2 f; _' o5 O" c( b
[
, o+ Z5 X+ ?5 o; l. Wif (item j( [credibility] of turtle (i + 1)) != -1)4 ~  W' m" \, X: k" G4 v' D
;;
判断是否给本turtle的评价质量做出过评价的节点
+ \3 ~2 ]5 X0 H8 E6 f[set note (note + item j ([credibility]of turtle (i + 1)))
0 w& B; u& g' p0 U* S( Y' D;;*(exp (-(people - 2)))/(people - 2))]
& J8 ~9 l! O2 Z# }& E/ k  x9 }
set k (k + 1)! a' i, j' G8 J* k2 v2 Z6 V
]
2 K+ u( c* n) d" Z' V4 L8 ~. A; Gset j (j + 1)% [3 X7 s) I" y3 E" g5 y
]
9 J( }. O6 P8 `* c% wset note (note *(exp (- (1 / k)))/ k)
2 i' Y' y% `8 R- Tset credibility-list (replace-item i credibility-list note)
' d; t% s+ T( h! i. Sset i (i + 1)- b1 Y5 j4 H$ w" {- x
]9 Q* X# ?" y4 F+ B
end
4 p4 j7 H; _, _8 Q9 o
' H" \3 h7 i, m' Fto update-global-reputation-list
/ H9 E3 w7 H" ^, K6 K/ klet j 04 E' Z- {8 l# |1 d5 n' K$ R$ n
while[j < people]+ C  Y* z! f7 p6 D# R4 F
[5 D0 H" z1 m* y! I2 q& [6 E
let new 01 J. u, U/ `$ {7 e9 C3 i
;;
暂存新的一个全局声誉6 u$ j6 F, N3 k3 t2 f
let i 0" ^6 M/ S) H# O; _0 D
let sum-money 0
: \. ?6 O' V% Olet credibility-money 0
& n% S" \1 b" E% j. X! Owhile [i < people]3 @: L4 N/ c2 _5 J7 U# U- h
[0 }6 q. @1 F4 |' ^* F
set sum-money (sum-money + item 2(item i [trade-record-all] of turtle (j + 1)))
5 |  b# o- J8 t4 b9 y5 T/ l7 p4 s; Vset credibility-money (credibility-money + (item 2(item i[trade-record-all] of turtle (j + 1))) * (item j credibility-list))# M+ }/ h& N; \5 h
set i (i + 1)& J( A+ X, U+ `: e( j
]; a; ~* d" M7 h+ t" D3 Z5 l
let k 0
9 e* v* H9 h. B& G6 G; i% U1 ]8 k2 ylet new1 0
" r  H4 P3 Z$ H& M( z7 jwhile [k < people]
7 [1 A' o# @1 n[
$ M: ~0 `# e+ Y- Dset 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)
# h5 s. d; I: n! A4 {0 y7 Bset k (k + 1)' F5 z" e6 B4 O. P- \
]
/ D9 c+ N1 H, Rset new ((exp( -(1 /(sum-money * [neighbor-total] of turtle (j + 1))))) * new1)
& M( `+ a4 h9 r, X2 y4 F; {set global-reputation-list (replace-item j global-reputation-list new)
9 u  ]9 u! D% S# [- B: R2 Mset j (j + 1)+ P/ G9 v+ x; e8 f2 x
]4 P; Z; \% {6 J) K
end9 C3 r$ Y- C  M1 D
3 N; N/ p7 v: a4 q

2 V/ z9 z# R6 o  r4 l! c
/ o- g) s/ z7 O3 Z( U& R% nto get-color
, |0 a+ P. E9 q8 K# a
! y1 T9 |9 x* S, h9 ^' k3 `( cset color blue
" F1 Y) [! `! L8 `0 |. U
end3 N/ i9 A: s/ G7 {. h$ u: N
2 c- H% S: ^7 P6 Q: q! J* W/ q
to poll-class
  q. G* k0 A. Q/ \8 D3 ?. {8 X6 Oend
' b& o1 q( R' ^. p0 R7 k- q/ B
* R, H6 v; c: T* Vto setup-plot1. O' N8 P. d0 A8 j2 y  M- X; @. \
0 k: s8 p/ H' h6 W+ y2 r7 P
set-current-plot "Trends-of-Local-reputation"
  a9 \3 v' Q; q$ {$ A' Z" z
/ }6 s, r( q$ ?$ y( ^3 M
set-plot-x-range 0 xmax

8 M* K1 Q6 C) ^0 E+ l3 L  D
2 h. t! o: b2 m3 ?* Qset-plot-y-range 0.0 ymax
& L7 B8 a" T3 J: @
end
/ s. C7 s& B( P& V6 V6 m  w( a8 E( j* M8 n% }9 z5 O
to setup-plot23 w" v- x* K. s4 P0 |$ a- W7 H* z3 z

/ |2 y  h2 n8 }. R7 Uset-current-plot "Trends-of-global-reputation"
+ H3 {- ^2 H& x# ~! z1 E

5 x. h9 T0 L  p# T: l5 ^set-plot-x-range 0 xmax
* B$ _7 A# O9 ~/ S7 X

( x5 W) _# z9 t0 m5 Eset-plot-y-range 0.0 ymax

& k6 U* ?% `/ Pend
, T! s  {- p, ~+ o- y% f; s; p
- U" \- B* f6 i3 {3 Q" lto setup-plot38 f& ?' N+ g2 g& u. z: `6 c5 f  K) U
. i' j; T3 S/ j) q5 I
set-current-plot "Trends-of-credibility"

6 _9 L+ i! A" L0 ~+ R4 V" E; \
( Z. A0 W* m& o  Fset-plot-x-range 0 xmax

  I" ~3 F' v5 W1 X" \# P# _* V* t  m* L7 Z" z$ f" A) O0 l5 K
set-plot-y-range 0.0 ymax

0 Y% o8 M6 W( Fend
5 L1 D$ s4 h) T& I. ^9 a2 k5 {  G( o. H4 {
to do-plots
8 }/ a, P, `6 k; w. G/ x6 jset-current-plot "Trends-of-Local-reputation"
2 e/ ~+ {. A4 o: |  \. Jset-current-plot-pen "Honest service"2 O- S6 s8 d# Q1 W. a" H
end" }( `1 @% o- j# u, C
2 B! ~0 ?( ?+ p) H% r
[ 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.
, V+ h, j2 Q; w4 \8 }& {7 E! |( `2 o6 d5 f9 {' J" `
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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