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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:
! m0 C8 D: v7 M( Ato do-business 1 G& h& X+ O: |/ ~/ n: K( Q
rt random 3602 m) }7 K+ \" T1 D- _! F  s# F& J
fd 1& B% l; N+ t, |+ p  q9 G3 a
ifelse(other turtles-here != nobody)[
- e- d  M" o  D, f   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.
, [- ~* g* [5 s- T   set [trade-record-one] of self item (([who] of customer) - 1)  [trade-record-all]of self   
9 O+ {/ W: `' p: k( q   set [trade-record-one] of customer item (([who] of self) - 1)  [trade-record-all]of customer/ a+ I% i- ?9 W4 d* i/ \
   set [trade-record-one-len] of self length [trade-record-one] of self
" y, t8 p: i, r- |4 b; ~9 k   set trade-record-current( list (timer) (random money-upper-limit))2 l! n$ u! s/ k/ I7 e- |* p

3 t& X0 \9 C5 E2 r- R- u# p问题的提示如下:( y  ^/ k+ E$ l& [' }; U# G8 z- ?

% f, n8 R" x* _0 p5 m. E! aerror while turtle 50 running OF in procedure DO-BUSINESS
9 g. o7 y9 ]- I9 R2 q  called by procedure GO& L6 v! W7 c2 y
OF expected input to be a turtle agentset or turtle but got NOBODY instead." i+ v1 a5 m( D1 d: ]7 Y# N4 V
(halted running of go)
- _' `5 N' |1 T/ J+ U8 {# N: l- d/ M! 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~~
3 ^! ^2 u% x' W- a0 Q8 p4 p7 ]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# g* \; W. R1 L9 l( }) F
globals[, D- a. m- g4 ^+ \' l
xmax) v, |- j% M/ s
ymax
) u+ ?9 t- k. Z0 ], T  o' y- ~( Dglobal-reputation-list
1 l; o, F5 i' y  C1 ~3 n
* c4 G, N8 p8 E: k9 L, o; d" h;;
每一个turtle的全局声誉都存在此LIST. K& f$ W8 s8 F+ k4 S: ]6 v
credibility-list
& A8 l; k) J8 \# \2 o;;
每一个turtle的评价可信度
. n! @5 I* T1 C. C/ p! K3 khonest-service
" z) Y5 u7 ?' \* K/ junhonest-service# c! t5 C  O& l4 Q  P
oscillation
1 P2 N! h0 ?8 C1 C  H4 vrand-dynamic
) b* t. n7 b* ~7 Z]8 K& P. e3 e) K, ?1 u- j) q

  u/ s- D9 x7 Q5 C( G7 j/ X9 [turtles-own[  z7 U/ f* K% D# J3 _, F9 n8 W5 D6 ]/ E
trade-record-all; e; l+ s1 B: Z; X! [6 k$ r5 v
;;a list of lists,
trade-record-one组成
& d* J* o5 o; w& c# A& S) Htrade-record-one% s/ g. t# ?5 i0 z
;;list,trade-record-all
中的一个list,作为暂存用,记录两个turtles的交易记录$ \; W8 H3 f' X' [* i" Q

' P2 M2 A! h) V( g( c% O6 o! U;;[
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]]
* I3 Y0 g/ h* V* s" J5 Ktrade-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]
+ P$ y7 X8 U0 t5 t& Wcredibility-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
, g4 T/ T% T9 {( T% `2 w; S. ?5 bneighbor-total
2 \# C$ R% f" K  f+ O;;
记录该turtle的邻居节点的数目
  u. m7 ~, f' R3 htrade-time5 P' J; j' b; h! r# b( d8 g
;;
当前发生交易的turtle的交易时间
6 c2 `6 J% @* k/ j/ l& p; eappraise-give
; m7 h; O, t$ s$ m" I8 A8 P5 E* p;;
当前发生交易时给出的评价
# ^- B4 g3 ^+ U3 c0 p/ |3 Eappraise-receive+ Q3 e; [8 G2 B& t
;;
当前发生交易时收到的评价
, D, U' ]! g+ W: ]4 r) a: jappraise-time) s* I* t# X9 R9 @  x0 R" Y
;;
当前发生交易时的评价时间
! x/ C; }( |- O  a# x: N/ zlocal-reputation-now;;此次交易后相对于对方turtle的局部声誉0 ]! \% H* G! x: J: R7 S$ o
trade-times-total
/ y3 a, A  p& ~. B) c3 C% J;;
与当前turtle的交易总次数9 M' x" D" H( ~3 B: V
trade-money-total( M3 B1 u% T% t4 Z
;;
与当前turtle的交易总金额0 |+ J9 x- u5 c7 y' N
local-reputation- `( j  [; {4 K. j( D# D
global-reputation
  C1 ?- }. m( Icredibility
# u) k) [9 p" t6 f) t;;
评价可信度,每次交易后都需要更新
6 I3 W: X+ G: d  e1 e4 ?! v* Fcredibility-all
( M! d1 M. e8 b. J;;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6 P5 R; k, L2 z% u
" P  Z8 P0 z2 H* J/ A
;;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
# q! v% a. n5 X$ O/ H* u6 Icredibility-one. |( e3 ]: ]: V% _4 w7 B+ S) S
;;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$ \# K6 S7 q5 n  G, \
global-proportion" u% }9 i$ ]8 v
customer
' V6 e! L1 l8 a1 g3 ocustomer-no
. H% W* W: l: @2 F) ytrust-ok
3 A+ Q0 X. I3 L. U# ]/ O7 Z7 Ytrade-record-one-len;;trade-record-one的长度3 n- e6 T  F0 b0 I
]
. \* e8 ?5 s! Y6 ?0 ?) D% X
# m, ]8 ]# \1 o2 H4 d/ B;;setup procedure
) M' @, G" ]9 z0 x. V) e9 }
/ Z2 b! F9 ^/ V# O% T6 A& d' t. Z1 w1 Qto setup% P+ E) v1 I9 s" l" c5 i6 |

' y& g, P$ Y/ H$ Y# R6 w) [( tca

3 q, C( Q! z1 Z6 M8 N' @
! y0 `6 |7 S' _* v7 h. uinitialize-settings
. K9 `+ L& M+ X5 B0 ]/ e
! E  R+ k* @* b& o/ |
crt people [setup-turtles]
& ^( U8 {# i' V( x* k7 D# _

" J) P5 J' P! [- h; l0 Lreset-timer

( V# m1 R& O; a5 ]$ }
: j' B. H4 _  H' \  i# epoll-class

6 V# D5 m5 r4 A+ L7 Y. E
# v& B1 g4 y% g/ h' }. N& Ysetup-plots
/ n9 `: k) z: v0 y+ J2 S

9 E, D) r2 M6 G8 g' i$ @do-plots
3 v4 o4 D: I9 t* W( x7 t7 x6 U
end2 ^1 t% A! N# B

! p  r6 e- C0 Lto initialize-settings* J4 c! s4 @. o4 q6 [
  e& ~4 T# R+ q8 w2 X8 N! v2 u9 V
set global-reputation-list []

" L" o. V3 H! J8 B5 q6 X: i4 S8 M: l9 s4 [
set credibility-list n-values people [0.5]

7 k, t, t2 W( X" i0 \
; a7 y% K) x: c( \  ^/ D1 z. l) g, Lset honest-service 0

* ~& U+ X  T" r5 n: h% n5 ?9 n' l! X% o
set unhonest-service 0
  w' |7 n: A% `& i& ~  ]

/ ^& D6 s2 z7 g" q  g4 zset oscillation 0

3 ]  Y& }* T! B- @& [; c6 Q! c1 `
set rand-dynamic 0

7 g! H5 J; Z' Y# r* Y% zend
# T) W# _% M- ~* o1 M
6 e! F( ?2 I& @0 _0 c7 R6 N, z: \; M3 Wto setup-turtles ! M8 {( g+ v# O6 r
set shape "person"
! ^% F0 ~3 r6 X# M2 ?, ]setxy random-xcor random-ycor
0 W$ L0 z% u# x) U" x5 Z" d7 _set trade-record-one []! I* i9 W. t$ n) F! r3 Y
. s7 ]4 \! g3 w" n& S/ U, y
set trade-record-all n-values people [(list (? + 1) 0 0)] 8 k! U1 z  \9 d- M! Z
& ^8 B' _3 L8 p% ^
set trade-record-current []
1 L2 z% x# T$ Oset credibility-receive []
& i6 @8 s+ p+ u' o; d. nset local-reputation 0.5
, q3 e( K' ^4 g4 |4 }set neighbor-total 0
0 }, R5 a9 Z* [# y+ x1 p# l7 Y) N+ q" Vset trade-times-total 0
$ i/ [- Y5 Q  F5 s; Z9 ^/ `: Dset trade-money-total 0' |6 I) @7 o8 q5 |) z* v" ^
set customer nobody
; a8 f0 Y1 @  r. ?set credibility-all n-values people [creat-credibility]
- X; y9 s: R2 S, yset credibility n-values people [-1]' \2 T+ {$ q* T$ g9 J. X* G6 [8 n! _
get-color# B& y) N+ i3 S$ \( s
; W6 f; O+ H2 B% |0 g4 X* `- Q! y
end: u) h$ q2 E& [% S. \& D3 A

3 M- k% x8 y! B! d: M2 |to-report creat-credibility+ x6 b4 T% t1 v9 ~: G" R; G* r. B3 Z
report n-values people [0.5]; S& }5 ?$ H" Q" m$ D, D
end
4 [' l' A) P8 @; g5 m0 J- w4 ^, e; `' Y6 A& |
to setup-plots
4 }# F- m& O, d" b8 g( G9 c3 K. u+ ~. M7 ~# K7 k: |
set xmax 30

) c5 d. {, ]3 j: @% |, j' i; X, x, N% y% Y: w
set ymax 1.0

& ~$ T! `+ @5 l+ [3 O/ T# Z
# M5 t/ ]7 j  c0 L: m' L# M- M- zclear-all-plots

0 D1 J. n3 K2 T/ w/ T( Z1 p" B* f, w
setup-plot1

9 |- ]/ U+ M, w" P) x/ {# |4 }/ E  g7 M8 E$ _* W2 t
setup-plot2

, L7 r; n$ L# J0 K* }4 p% s% }, q7 l' K& f$ p4 S
setup-plot3
0 E5 _  C& E5 n& \; W
end
' t( i( y, @3 c
- P0 h+ {( V) S( V, \& L;;run time procedures
& D. s0 m5 u( k( t1 |
) _. i% ^7 s7 w7 T5 H' Z1 A& _$ P8 M6 B# Tto go8 Y" s2 Z: g* G8 c6 t! V& }7 K

  t: F9 _6 A8 l8 ~9 j7 H' x  Qask turtles [do-business]

  T6 k( w" w8 x/ u* mend/ S0 y% P9 t3 `/ F7 D' S% m% y3 m
8 X% r8 m: j2 {) J& T8 W6 d+ a
to do-business
; N+ D7 }* a+ c% Y4 f8 y

% T2 a0 S6 f: ~# ~
7 M6 k# q! n$ ?! ~* T  I" Jrt random 360
/ J# g! X0 C  f6 y
7 `) C, h9 q/ g! }5 d% k
fd 1
6 {4 B% J# }9 f3 O/ x  [

5 B& Q! Z, W( \% q1 T# `ifelse(other turtles-here != nobody)[

# `3 P2 A  E4 c2 P9 V9 _$ u3 q/ f6 W1 Q
set customer one-of other turtles-here
0 ?# [2 |# p% P1 i( D5 a1 K7 m# S

2 |* J2 E" H; d' a0 \;; set [customer] of customer myself

0 U" e% J9 Y+ G. k( \: t+ \( u9 B, @% L/ i5 {- X( q( o: D
set [trade-record-one] of self item (([who] of customer) - 1)3 a7 j8 _& a( A* D: h
[trade-record-all]of self
+ Q, }( f' T9 }; T3 G;;filter [item 0 (? ) = [who] of customer] [trade-record-all] of self

+ N, c2 H: P+ ]; t, \; f  O' E' Y' o6 b# J( v: U5 y" z# i  o
set [trade-record-one] of customer item (([who] of self) - 1)4 \* p2 @4 y; U. L
[trade-record-all]of customer

/ }3 z) U. E1 _1 Q, U  _$ H) j. x, h6 t) y' E6 @, \$ x; @; t3 V
set [trade-record-one-len] of self length [trade-record-one] of self
$ \5 R# y4 z3 c8 d( h* s
5 }4 U; Z: b# s1 ^% M2 e/ w, d
set trade-record-current( list (timer) (random money-upper-limit))
3 F( ~! l! v, a7 h0 s0 F5 T
- m3 h% O' B+ _9 O. C( q' w9 {
ask self [do-trust]
6 f; R% q) m6 P2 Y- B;;
先求ij的信任度
5 t: z. E9 u, n" k: A1 l5 c; f. P) F) z" e* V, [) D% J
if ([trust-ok] of self)6 ^& v- D5 l3 t# F4 E6 T
;;
根据ij的信任度来决定是否与j进行交易[8 Z1 m7 i3 {/ w+ U
ask customer [do-trust] if ([trust-ok] of customer);;
这里可能会用到myself
" T2 r2 \! p1 c) |9 ~1 F
4 p2 @, `3 R' P3 q4 r- b; U[

6 b3 b2 g' q+ A: J# Q: D/ O% A$ c) U% d0 L3 U
do-trade
6 `$ z; }  Y# S, a9 w. \. E
. U( x  ]: |6 t4 j
update-credibility-ijl

1 S3 S! i  d  N' ?! o- K' p3 |  L# g5 @* u" i5 A
update-credibility-list: X2 t1 D; l" P9 Y8 L+ t2 W' X+ m

' Q- o& G# D# l$ w
' i2 m+ f* l9 k( m7 F' x+ Q! w* Yupdate-global-reputation-list

- B! P0 Y  F( w+ z( d$ ^1 L) b* E. T. W/ B4 f# t. m, v
poll-class
$ y: }% q* s5 H) _2 P" W5 `% W

% c5 N1 a0 V$ Q" gget-color
9 A3 C5 ?- L2 F, O, T3 m

3 E9 J  g, N: W  R$ S* u0 Q]]
( F3 c( Q+ U* N8 U) @, a" y, h1 Q
# M/ P% A. ?+ R" Y, k0 O5 X' p;;
如果所得的信任度满足条件,则进行交易% I; l% ?) P( g( U

4 D+ c8 A( a# R! q( q9 w, p+ k9 H% T& S[
  o4 W& w) m$ p. _* [/ z' m

4 Z: V- P/ B9 w) |& i  ~rt random 360
: {' k$ H0 j" t2 t
: H& [$ H. H& F8 A8 H8 G; Y9 e
fd 1
0 |6 a0 \# f+ K$ M9 n5 B3 S
+ b+ K6 i: w( T1 i+ S) V  b+ x" f
]
$ C- \+ q( w5 u# k

8 Q) j( H. p2 `% C4 S! Eend

& n" _# Q4 B2 c9 b
& S9 q/ C! ?1 i8 B8 P6 \to do-trust
* T$ z! k$ K- K) Vset trust-ok False- |1 l- E# `' x, Z3 G3 K
- b' _& j8 ]( T  P8 I/ r
9 ^& [' y/ ?& ^- p! r
let max-trade-times 0
6 {  t# V: k4 U& G$ mforeach [trade-record-all] of customer [if item 1 (?) > max-trade-times [set max-trade-times item 1 (?)]]
5 g- Z- k% X/ o3 Q7 I; Y7 b2 Z/ c$ v+ Wlet max-trade-money 0
, G  P7 Q! o* @. {foreach [trade-record-all] of customer [if item 2 (?) > max-trade-times [set max-trade-times item 2 (?)]]. Q" I: _8 G# Y" g6 f
let local-proportion sqrt((item 1 [trade-record-one] of myself * item 2 [trade-record-one] of myself) /( max-trade-times * max-trade-money))# u  c% Z5 R" C+ ]/ l6 r# }4 d  d

' C8 \; r7 O/ W9 G! h  ~8 t

! O9 J7 O" ]: _+ v6 }get-global-proportion% w' v7 o* \; \& X# v
let trust-value% K8 I8 R( ]3 e! i+ v
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)
" I  e3 p- {- X9 [
if(trust-value > trade-trust-value)
/ T6 x6 a! q  O% \/ w3 X[set trust-ok true]
6 h9 F; G! A. M8 h" rend
; n  U- @  V: y1 l$ [; x
8 x0 Z! g, @- G1 F4 {" X4 ~to get-global-proportion
, t! t9 g/ H6 U; D3 e3 [% U$ ?- ]ifelse([neighbor-total]of customer = 1) and (trade-record-one-len > 3)/ S- Y8 z: z: {, g+ v- t4 C2 q
[set global-proportion 0]8 W& y; j% b) U8 C, F- O
[let i 0
2 @8 V) ?; L, j8 e8 h( I- J5 }let sum-money 0$ X" A0 j- O% ^6 f& v# l
while[ i < people]2 \. S  t6 S6 v% V3 ?3 ~
[
1 @: p3 O1 l- D/ x6 e7 c. |$ J% F  jif( length (item i
! i1 o% w% u  l5 k# s. k: d. C[trade-record-all] of customer) > 3 )

7 S" i8 k5 o0 P  n6 |+ b[
/ S, a! ^5 R  r% R0 i# I% n/ I! n% zset sum-money (sum-money + item 2(item i [trade-record-all] of myself))- n5 t; \+ s( z, j- N/ u0 P* q! \
]8 M- Q9 U# c( ^' r% ?' ?
]4 `  i2 U& U) L, h; P
let j 03 G% J  Q" p( `$ p2 w5 i
let note 0
: k) p) L0 |. h. h$ V7 E/ `while[ j < people]; J% m3 }9 y2 K, B2 ]( M# O: @
[
: l; G9 k; A' y6 f/ Yif( length (item i  [  O+ H9 |0 p% n% E2 L$ A, j
[trade-record-all] of customer) > 3 )
" C5 v5 k" j$ }
[
+ o/ n" B0 E( |% D* ?, B! vifelse(item ([who]of myself - 1) [credibility] of turtle j != -1)
) f1 S1 G! K- e# `) M6 x9 Y5 h[set note (note + (item ([who]of myself - 1) [credibility] of turtle j )* item 2(item i [trade-record-all] of myself)/ sum-money)]
" l: P" E7 D/ v5 W( d0 ][set note (note + (item (j - 1) credibility-list) * item 2(item i [trade-record-all] of myself)/ sum-money)]
8 T: O& {" j  M* V) o+ U4 X]
& a9 b9 u! C' c, l+ X]1 D+ I$ w: P. W) w; g$ O
set global-proportion note% V+ C! `/ X$ S  _' l1 J
]3 y/ O7 [! m! o8 [1 T1 |0 p- }% _
end" q4 g$ d# q# }- O7 U
* n1 Z/ u/ \0 l/ f. J2 q7 Y9 s
to do-trade
4 e% K! o7 v0 H" I;;
这个过程实际上是给双方作出评价的过程; h8 C; w7 X+ D/ {: U
set trade-record-current lput( random-float 1) trade-record-current ;;turtle 得到的评价
7 i0 n9 i1 ^0 s1 i6 R5 [% P, Vset trade-record-current lput( random-float 1) trade-record-current ;;turtle 给出的评价3 H( E% i& {" W$ g- P  U! U
set trade-record-current lput(timer) trade-record-current2 W; i- t( g8 y9 u  W5 |. H  C0 Q% g
;;
评价时间" _! e" [4 u4 p, G
ask myself [( s+ s7 Z1 u1 ]/ T
update-local-reputation
8 l% t+ \0 V( T! @+ bset trade-record-current lput([local-reputation] of myself) trade-record-current
. f' W& g0 u5 _+ G# V2 R]$ l2 }) T; }- ^1 y! @, e
set [trade-record-one] of myself lput(trade-record-current) [trade-record-one] of myself5 n; g2 {, _  v3 x/ b
;;
将此次交易的记录加入到trade-record-one
  B( y  Y$ J1 l, q# W2 iset [trade-record-all] of myself (replace-item ([who] of customer - 1 ) [trade-record-all] of myself [trade-record-one]of myself)$ ?( c' A( p; P+ M
let note (item 2 trade-record-current )/ T0 Z" O6 X8 t
set trade-record-current, n+ Y  S5 k4 \+ y  ^7 S; f: I+ Y: i
(replace-item 2 trade-record-current (item 3 trade-record-current))

7 C5 \4 O# ?/ I+ a2 Oset trade-record-current
8 x& M! z8 W" i2 r5 J0 A, a(replace-item 3 trade-record-current note)- y; s0 ^4 V; F+ p- G4 x

- }) s+ L! D# L" @! H( b
( F1 R6 v) o' {) T; U, m
ask customer [
- c; r4 D0 z( w" Nupdate-local-reputation" D9 U# `2 k/ C9 `; f8 a2 Q3 ^7 r
set trade-record-current8 R# c% F* g$ {5 ]; H
(replace-item 4 trade-record-current ([[local-reputation] of myself]of customer))

& }1 n5 |& r& T' _# P]6 P- x! b& h6 k4 k3 l3 v
" u4 E0 r6 w5 I& w3 p6 _- T

! i1 y/ q7 w) w9 y! \' hset [trade-record-one] of customer lput(trade-record-current) [trade-record-one] of customer
3 r3 Q1 o4 x: S, X' i

' t) g, B. \' n' q0 C. {, T+ N/ Pset [trade-record-all] of customer (replace-item ([who] of myself - 1) ([trade-record-all] of customer)([trade-record-one] of customer))
+ m  L2 n, y5 o  x! h5 _;;
将此次交易的记录加入到customertrade-record-all
( p+ a9 X0 O4 L9 V* tend# r$ e% m8 g7 t' j1 T2 u5 ?
! U, }; K3 S9 O$ _: E% H' x4 T/ y
to update-local-reputation" T9 }" k( z& q( ~
set [trade-record-one-len] of myself length [trade-record-one] of myself
! e7 U" x; B7 j' W4 v" j: g& z& @  Z9 a7 r! a3 f. ~
. i# Z; Z6 e# i" Q
;;if [trade-record-one-len] of myself > 3

0 B& ~  m4 R% k) X1 @8 jupdate-neighbor-total
5 b! x  G" Q9 q;;
更新邻居节点的数目,在此进行
+ n% _6 H! `; ~4 i8 g$ ~. ?8 wlet i 33 p# o1 [0 ^: j* p' Q
let sum-time 07 P. Y; ]; l- u- F
while[i < [trade-record-one-len] of myself]
0 a1 H4 O7 E2 W6 s: j[
/ t! w' s! l6 e6 y( n- v3 nset sum-time ( sum-time + item 0(item i [trade-record-one] of myself) )9 h# j$ t6 `, B2 J4 n; _0 }6 z  }
set i
" i$ [4 l1 R' G; m& u( w& y* p, L( i + 1)
/ s0 J' n5 i1 T$ f1 `7 |* K$ w$ f
]7 I( x2 d# ?7 |
let j 39 _) O+ |7 a" f2 U# P4 W
let sum-money 0
0 |2 ]$ |/ _: w5 G- _( Cwhile[j < [trade-record-one-len] of myself]' `  F7 H4 D1 B/ ~
[
: Y  z8 Y" \7 X+ [% j8 Cset sum-money ( sum-money + (item 1(item j [trade-record-one] of myself)) * (item 0(item j [trade-record-one] of myself) ) / sum-time)
; i1 }5 T  y5 ]- ], _  [" Yset j
: F, y7 W0 T# S* N6 d* Q" ^( j + 1)

" }* B+ n1 P& t+ \$ ]]( X0 i& P6 m1 ^. q. E& ~0 Z
let k 36 y8 r" F! T2 E0 g
let power 0
+ }4 j$ x6 n; U  j/ f/ `$ Z  Tlet local 0
7 b1 N; [0 H' kwhile [k <[trade-record-one-len] of myself]
& i" F; b- {# S5 d* \' m: P9 S[
0 M- O& Q: O( p! ^- jset 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)
7 _# d* T; n  |+ |( Zset k (k + 1)
7 O* c7 n; g- ^8 ?8 ~# e) @( T]' y5 Y  B0 i+ F* g8 e! P
set [local-reputation] of myself (local)
" s; y! p6 l) ]3 rend
: p/ a& F' Z4 H0 y9 Q6 R; R: t* J+ s1 w) r
to update-neighbor-total% e- B. R4 e! V7 u1 R, D( _' \
- [, n) e5 p6 s6 J4 M) i4 Z
if([trade-record-one-len] of myself = 3) [set neighbor-total (neighbor-total + 1) ]
- U9 W" S/ y, B- `
. {; n- e3 g9 E4 ]- {2 X

) B( Y: |: R) N& X' R, k" A6 Dend
; I9 P  ?! H( I0 {+ s7 t: R4 M* p* o8 e# M) V. U1 [! s0 {4 H' |
to update-credibility-ijl
. l1 s$ r, s$ l3 a4 _! _# u0 Z! b( R' D
;;
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。$ j. ]3 W: j  {, X" {
let l 0
9 r0 d2 k4 {* ~( dwhile[ l < people ]7 v% F  Y. _/ U" E' U/ x
;;
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9 p3 N! ~/ q3 O: T& \
[8 L9 D; s3 }( j4 |+ G
let trade-record-one-j-l-len length item l ([trade-record-all] of customer)" P7 D, A# e4 M  \! A# ~
if (trade-record-one-j-l-len > 3)
9 a8 x0 n! g8 v( ~[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-one8 c2 t2 ]1 `+ c3 v( n4 h9 P# T+ d. q
let i 3" o/ {& x% Z; E  w5 ^4 k, N
let sum-time 05 v7 g% L* }6 s' J; p$ g& e
while[i < trade-record-one-len]- }4 b  Y# z4 H
[8 y1 A# O" f+ H  ?' o. i: m7 ]
set sum-time ( sum-time + item 4(item i [trade-record-one] of myself) )
4 K' w& y  ?) ~% T( B2 u* }set i
2 W7 m' S) [( Y" S' C( i + 1)
& W; n  j) P+ l) F
]
2 y5 a. u# O: Blet credibility-i-j-l 03 q: X* U! |2 C
;;i
评价(jjl的评价)( e: m) T3 }9 }! e: t
let j 3
+ S6 l, r1 w* A* y& n, qlet k 4
/ k' m: j! ^5 j  Q4 p  k; ^7 xwhile[j < trade-record-one-len]- B4 y  X# f' V9 C) J4 l4 t
[
3 J( {/ p/ j- _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
+ W+ Y2 e4 g, z. sset 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)7 m) Q) S2 S+ A- q2 q$ q; a/ V
set j
) Z: H' i+ q% Q) |% M( j + 1)
$ F6 v1 |( B' N. t5 V' v
]
1 J$ ?) m' t0 N1 G$ ^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 ))( _; N+ l" v/ Z+ V
) A- n9 a/ \* E2 Y5 r" \+ |. j
* ?2 O* E$ i& W9 Q, E# x3 K2 y  i
let note ((sum (item ([who] of myself - 1)([credibility-all] of turtle l)) - 1 ) / (people - 2))
! v* k$ T( _/ p4 K;;
及时更新il的评价质量的评价
' Q8 D" i" V( r5 h& N: zset [credibility] of turtle l (replace-item ([who] of myself - 1)[credibility] of turtle l note) ]
$ C( a4 B& w0 T4 f. T6 Lset l (l + 1)
! ]) \6 y4 w5 r: e]5 u! R: F, U. i7 j8 _
end8 s! z! [2 `" |+ t, F3 c
' i: R5 q9 P7 w/ b' ?. F
to update-credibility-list1 L  p$ f) m6 [4 _3 F
let i 0/ p# a7 |( p1 x- T) v6 A& R
while[i < people]
: W% q! S3 ^" e[
* |$ t8 e4 |9 @9 V8 y- [- t: n; Alet j 0
: g0 ^4 c! l: d1 i) \let note 0
' x1 u4 V% E. B5 J/ ]" Alet k 0
, D9 D6 R: J5 \. u" U+ f;;
计作出过评价的邻居节点的数目6 l$ _0 U: y# ~. H6 ?- x, D
while[j < people]* c2 r- W% ]) [/ F- _
[
5 d( \, k: v* {5 O& n* xif (item j( [credibility] of turtle (i + 1)) != -1)) J( L6 X9 b3 `3 Z- k7 z9 C
;;
判断是否给本turtle的评价质量做出过评价的节点
6 d3 W; z; E% p  P/ p5 i& X- U[set note (note + item j ([credibility]of turtle (i + 1))). g/ L4 N! y! \& R+ E* Z2 g( `$ A
;;*(exp (-(people - 2)))/(people - 2))]
. i( a5 L" A& K
set k (k + 1)
7 D: m" k' c/ |4 x3 m& L]2 s0 y9 n0 ]& _
set j (j + 1)
' G! O1 {: x  W/ r, K$ t]
, ^  _; A( c4 _  Mset note (note *(exp (- (1 / k)))/ k)
% J8 w: k& X1 u+ j3 Dset credibility-list (replace-item i credibility-list note)
5 ?. Y# k# s2 _" g$ k* ?$ D  rset i (i + 1)( q. ?! S6 ^- P- \$ B# c
]+ B! |+ N/ [  Z
end  i0 S3 |0 D9 o; \/ }. c, E( m! ~

+ U& w7 |6 X5 b% M8 gto update-global-reputation-list
% W# _/ b2 j/ W$ H4 H( zlet j 0
! e# W" F' g8 c* e# P& Qwhile[j < people]
3 V' t& c: k; c[
, Z2 p9 V' t1 }! M$ Olet new 0
' I- \- U/ k1 C;;
暂存新的一个全局声誉- p* n% c+ `" [  l6 g  b! X
let i 0* c6 b0 s$ ~/ M5 i
let sum-money 0
2 `& Y1 R) l' i- I: F1 f3 @' Alet credibility-money 0
1 I0 T3 B6 c. fwhile [i < people]( D/ Q* y* t3 G$ W% H
[& C$ I8 C5 v9 j* ~# v. d; x, Q; c
set sum-money (sum-money + item 2(item i [trade-record-all] of turtle (j + 1)))! R+ r+ [3 W2 A1 A
set credibility-money (credibility-money + (item 2(item i[trade-record-all] of turtle (j + 1))) * (item j credibility-list))4 ]8 k  e7 H+ c5 D3 D, S
set i (i + 1)3 ~: S& u3 x) {) e- h4 n: J
]# b4 D2 X( t8 Z; J! ?% B
let k 0
0 `& z' q7 T3 e; slet new1 0
' s& n4 d; D: |. _4 Bwhile [k < people]
) z, V: x4 q, Q' _[, k& u6 Z  G# Y5 j" O1 @- o! ?, i
set 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)7 h( W& T* H8 H/ z$ w
set k (k + 1)# y# ]/ M* E! _" H% w5 q3 V7 ^! s
]+ |. u8 {' v3 y8 h, s3 ^% Y" U, a
set new ((exp( -(1 /(sum-money * [neighbor-total] of turtle (j + 1))))) * new1)
( m" x  M" X% h0 K, Sset global-reputation-list (replace-item j global-reputation-list new)
1 q/ ~( ?5 l) hset j (j + 1)3 V$ Z( @: W, K$ j# Q
]
/ p4 b: p5 \) s; ~6 L% Yend
% S0 y# @/ y  k4 V- j/ \6 Q0 u4 d  N8 N7 W9 t1 ~; P" v

% o3 S* _5 i. a) g- B/ K! F
$ O6 @7 h( Z; ^to get-color7 L) b. |$ [- Q4 }2 Y
7 h5 s) [# C; B( \8 T% E
set color blue

9 m/ [5 X8 z. r# Lend1 p- s" \9 D# q3 _. o

; K* g: A) W2 g3 O) a2 Vto poll-class
# f6 `1 p6 x3 dend
6 E3 e; M9 A" m7 Q4 q
* f0 p# n. [9 {- U) [* @3 }+ Mto setup-plot12 V. T4 ~( B# i0 r( s# n: J

$ }9 F5 x0 ^% p! m# Aset-current-plot "Trends-of-Local-reputation"
) g. e0 d9 @2 f9 J3 i* L5 F2 K

# k2 C+ U$ |) gset-plot-x-range 0 xmax
0 w* A2 @+ s( x2 v7 X

& W: b  K/ z7 u( g) `5 iset-plot-y-range 0.0 ymax
% C( S3 Y% s" h
end& g! v3 |  e! t5 G
; A$ |. ~+ _/ T
to setup-plot2' }8 g& o0 W* v! F
# l8 z( V6 U5 k+ I
set-current-plot "Trends-of-global-reputation"

4 |1 Q. N" {! d. {4 L/ ]$ @& @/ f- [$ D
set-plot-x-range 0 xmax

$ k8 h  X+ Q, p" H% n3 G% v. T2 t0 _8 R# o
set-plot-y-range 0.0 ymax

) o6 ~7 `& e7 r2 d. X( ^1 }2 Z0 eend9 ]: x( _8 L7 Q8 K
  g' L. n) x) F+ l( }; J
to setup-plot3
! D' X6 h! c/ P. N8 v3 |5 Q9 M7 D- W/ A3 {/ D3 }/ ~* m4 }: w+ N$ a4 v
set-current-plot "Trends-of-credibility"

0 L2 ^* J" @/ V: W* T* w# m* L# i8 F2 J) @
set-plot-x-range 0 xmax

) e/ _+ y7 J9 S
4 F% S) W% Z5 I$ c  v8 lset-plot-y-range 0.0 ymax

, C4 {- ?; }2 o$ c( o( Bend$ @2 a% e5 V/ x$ S, ]; j
/ `: J+ o) @/ O% |" ?
to do-plots! H! z) N  l( _; w" Q) u+ R
set-current-plot "Trends-of-Local-reputation"
$ x+ R7 o! Q. A9 z; n) H- F- Aset-current-plot-pen "Honest service"' D7 e# a- `3 d% ?4 ~
end) J- j! s) a0 O5 \# U

% _$ P/ I2 H  F# B8 m[ 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.
/ L1 ~0 H, ]1 [0 ~
- a0 g1 i& ?5 p& p+ \4 k& M5 _' m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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